JP5288329B2 - Printing apparatus, printing system, and printing control program - Google Patents

Description

  The present invention relates to a printing apparatus, a printing system, and a printing control program.

  2. Description of the Related Art Conventionally, there is known a printing apparatus having an automatic duplex printing function in which after printing on the first side of a sheet, the sheet is automatically turned over to print on the second side of the sheet. .

  The printing apparatus having the automatic duplex printing function has a complicated paper path for turning over the paper printed on the first side. For this reason, when a thick paper, an irregular paper, or the like is designated, Printing cannot be performed using this automatic duplex printing function.

  Therefore, as a conventional technique corresponding to a case where there is a paper designation that cannot be printed using the automatic duplex printing function, those described in Patent Document 1 and Patent Document 2 are known.

  That is, Patent Document 1 has a configuration in which even if a paper of a size that cannot be automatically printed on both sides is set, manual double-sided printing can be performed if the size is manually printable, and operation variations are increased. Have been described.

  Specifically, for single-sided printing in the duplex mode, it is confirmed whether the paper size of the paper set in the set paper feed port is a size that can be automatically printed on both sides. When the dip switch W1 is off, the printer waits until a paper size that can be automatically duplexed is set. When the dip switch SW1 is on, the printing mode is changed from the duplex printing mode to the single-sided surface. Change to print mode, display “Waiting for front side printing for manual duplex printing”, wait for user's manual print permission notification, manual print permission notification from user, for example, press copy button if permission A configuration is described in which whether or not an operation has been received is checked, and if it is received, front side printing is executed in single-sided mode and the completion of front side printing is waited for. .

Further, in Patent Document 2, printing that can prevent a recording sheet that has been printed on both sides by reversal discharge and a recording sheet that has been ejected only by single-sided printing without being reversed during double-sided printing of one job from being performed. The device is described. Specifically, in the case of a double-sided printing instruction in a multi-function machine having a double-sided conveyance mechanism, the front and back sides can be reversed by the double-sided conveyance mechanism for all recording sheets to be printed. A configuration is described in which manual duplex printing is performed in which, even if there is even one non-reversible recording sheet, printing is performed one side at a time, and all sheets are not reversed.
JP 2006-1207 A JP 2006-199022 A

  It is an object of the present invention to provide a printing apparatus, a printing system, and a print control program that can perform double-sided printing including pages that cannot be automatically double-sided printed with as little user intervention as possible. .

In order to achieve the above object, a printing apparatus according to a first aspect of the present invention determines, for each page, whether each page can be automatically printed on both sides based on paper information given to each page of print instruction information. When the determination unit and the first determination unit determine that the page is capable of automatic double-sided printing, when there is a next page and the paper information of the next page is the same as the paper information of the previous page, The page and the next page are automatically printed on both sides, and if there is no next page or the paper information of the next page is not the same as the paper information of the page, the page is controlled to be printed on one side with respect to the first side. When the first determination unit determines that the automatic duplex printing is not possible, and there is a next page and the paper information of the next page is the same as the paper information of the previous page, the next page Page to page face A first print control means for single-sided printing to the rotated 180 degrees first surface, generating means for generating the page information of the second surface which has not been printed in the first printing control means A storage unit that stores the page information generated by the generation unit, and a set of printed sheets on which double-sided printing or single-sided printing of the first side is collectively set in a tray, And second print control means for controlling to selectively print the second side of the set printed paper based on the page information stored in the storage means.

According to a second aspect of the present invention, in the first aspect of the invention, the first print control unit is a page in which the first determination unit determines that the automatic duplex printing is not possible, and the next page does not exist. Alternatively, if the paper information of the next page is not the same as the paper information of the page, control is performed so that one-side printing is performed on the first side based on the page information stored in the storage unit.

According to a third aspect of the present invention, in the first aspect of the invention, the second print control unit reverses and discharges the double-sided printed paper out of the printed paper without performing printing . The paper on which one side is printed is controlled so that the corresponding page is printed on the second side and discharged.

According to a fourth aspect of the present invention, in the first aspect of the invention, the storage unit includes page information including page data of the second surface not printed by the first print control unit, and reference information of the page. save.

According to a fifth aspect of the present invention, in the first aspect of the invention, the storage unit does not include print job data, the print instruction information, and a page that does not include the page data of the second side that has not been printed by the first print control unit. Information and reference information of the page information are stored.

According to a sixth aspect of the present invention, in the first aspect of the present invention, after the printing by the first print control unit is finished, a control is performed so as to perform a display prompting the user to set the printed paper on the tray.

According to a seventh aspect of the present invention, in the first aspect of the present invention, the second determination unit determines whether there is a page on which the automatic double-sided printing is not possible before the first printing control unit performs printing of the final sheet. When the second determination unit determines that there is a page that cannot be printed automatically, the first display for confirming the execution of the printing on the final paper is performed by interrupting the printing on the final paper. A first display control unit that controls the final sheet, and a final sheet print control unit that performs printing on the final sheet when a print confirmation operation is performed on the final sheet in response to the display by the first display unit. And a second display control means for controlling to perform a second display prompting the user to set the printed paper on the tray after the printing by the final paper printing control means is completed.

According to an eighth aspect of the present invention, in the first aspect of the invention, the second determination means for determining whether or not there is a page for which the automatic double-sided printing is impossible after the printing by the first print control means is completed, and the second A paper reset information printing unit that controls to perform printing of paper reset information that prompts the user to set the printed paper on the tray when the determination unit determines that there is a page that cannot be automatically duplex printed. It has.

According to a ninth aspect of the present invention, in the first aspect of the present invention, the second judging means for judging whether or not there is a page in which the automatic double-sided printing is impossible after the printing by the first printing control means is completed, and the printed paper If the second determination unit determines that there is a page on which the automatic duplex printing cannot be performed, and stores the sheet in the tray. Paper discharge means for discharging the printed paper.

According to a tenth aspect of the present invention, in the first aspect of the present invention, the second determination means for determining whether or not there is a page in which the automatic double-sided printing is impossible among the pages of the print instruction information, and the second determination. If it is determined by the means that there is a page on which the automatic duplex printing is not possible, the paper to be controlled to print the paper reset information that prompts the user to set the tray before printing by the first print control means ; and a re-set information print control unit, the second print control means to selectively perform printing of the page relative to the second surface is set before Symbol tray together the printed sheets Control.

According to an eleventh aspect of the present invention, in the first aspect of the invention, a second determination unit that determines whether each page of the print instruction information includes a page that cannot be subjected to the automatic double-sided printing; If the second determination unit determines that there is a tray that stores sheets pre-printed with re-setting information that prompts the user to set the tray, and the second printing unit determines that the automatic duplex printing is not possible, the first printing is performed. prior to printing by the control unit; and a paper discharging means for discharging the contained paper to the tray, the second printing control means, said set before Symbol tray together the printed sheets first Control is performed so that the corresponding pages are selectively printed on the two sides.

According to a twelfth aspect of the present invention, in the first aspect of the invention, a second determination unit that determines whether or not there is a page on which the automatic double-sided printing is impossible after the printing by the first print control unit is completed, and the second When it is determined by the determination means that there is a page that cannot be automatically printed on both sides, a display control means for controlling the display to prompt the user to set the printed paper on the tray; and after display by the display control means A third determination unit that determines whether another print instruction information has been received, and printing performed by the first print control unit when the third determination unit determines that the other print instruction information has been received. If there is standby print instruction information that has been completed, printing based on the separate print instruction information is performed after the slip sheet discharge means for discharging the slip sheet and the slip sheet discharge by the slip sheet discharge means. And a third determination unit for determining whether or not the printed paper is set on the tray after completion of printing by the third print control unit. The second print control unit selectively prints on the second surface of the set printed sheet when the fourth determination unit determines that the printed sheet is set. Control to do.

According to a thirteenth aspect of the present invention, in the twelfth aspect of the present invention, the slip sheet discharging means includes a sheet having a size different from that of the sheet printed on the first print control means and the sheet printed by the third print control means. Search means for searching for a stored tray, and discharge control means for controlling to discharge the paper stored in the tray searched by the search means as the slip sheet.

According to a fourteenth aspect of the present invention, in the twelfth aspect of the present invention, the slip sheet discharging means includes a sheet having a different size together with a sheet printed on the first print control means and a sheet printed by the third print control means. When there is no corresponding tray by the first search means for searching the accommodated tray and the first search means, printing is performed by the paper printed on the first print control means or by the third print control means. A second search unit that searches for a tray in which a sheet having a size different from any of the sheets to be stored is stored; and a tray that is searched by the first search unit or a tray that is searched by the second search unit. Discharge control means for controlling the discharged paper to be discharged as the slip sheet.

According to a fifteenth aspect of the invention, in the twelfth aspect of the invention, the interleaf discharge means discharges predetermined colored paper as the interleaf.

According to a sixteenth aspect of the present invention, in the first aspect of the invention, the second determining means for determining whether or not there is a page that cannot be subjected to the automatic double-sided printing after the printing by the first print control means is completed, and the second When it is determined by the determination means that there is a page that cannot be automatically printed on both sides, a display control means for controlling the display to prompt the user to set the printed paper on the tray; and after display by the display control means A third determination unit that determines whether another print instruction information has been received, and printing performed by the first print control unit when the third determination unit determines that the other print instruction information has been received. If there is standby print instruction information that has been completed, it is determined whether the paper size printed by the first print control means is the same as the paper size printed by the third print control means. If the paper size printed by the first print control means and the paper size printed by the third print control means are the same by the judgment means and the fourth judgment means, the first A third print control means for controlling the printing based on the separate print instruction information by selecting a tray containing paper sheets having the same size and different orientation as the print size on the print control means; And a fifth determination means for determining whether the printed paper is set in the tray after the printing by the print control means is completed. When it is determined that printed paper is set, printing is selectively performed on the second side of the set printed paper.

According to a seventeenth aspect of the present invention, in the first aspect of the invention, the second determining means for determining whether or not there is a page that cannot be subjected to the automatic double-sided printing after the printing by the first printing control means is completed, and the second When it is determined by the determination means that there is a page that cannot be automatically printed on both sides, a display control means for controlling the display to prompt the user to set the printed paper on the tray; and after display by the display control means A third determination unit that determines whether another print instruction information has been received, and printing performed by the first print control unit when the third determination unit determines that the other print instruction information has been received. If there is standby print instruction information for which printing is completed, an offset position different from the paper printed by the first print control means is selected, and printing based on the other print instruction information is controlled. 3, and fourth determination means for determining whether the printed paper is set on the tray after completion of printing by the third print control means, and the second print control. The means selectively prints on the second surface of the set printed paper when the fourth determining means determines that the printed paper is set.

The invention according to claim 18 is the invention according to claim 1, further comprising management means for managing identification information of print instruction information related to the page information saved by the saving means, wherein the second print control means is Control is performed so that printing is selectively performed on the second surface based on the identification information managed by the management means.

According to a nineteenth aspect of the invention, in the eighteenth aspect of the invention, the first print control means and the second print control means are controlled so as to simultaneously print the identification information managed by the management means during the printing. To do.

A printing system according to a twentieth aspect of the invention includes a printing instruction device and a printing device that performs printing based on a printing instruction from the printing instruction device, and the printing device is assigned to each page of the printing instruction information. A determination unit that determines whether each page is capable of automatic double-sided printing on the basis of the sheet information , and a page that has the next page when the determination unit determines that the page is capable of automatic double-sided printing , and If the paper information on the next page is the same as the paper information on the previous page, the page and the next page are automatically printed on both sides, and there is no next page or the paper information on the next page is not the same as the paper information on the page. In this case, the page is controlled to be printed on one side with respect to the first side, and when the first determination unit determines that the automatic double-sided printing is not possible, there is a next page, and the page If the paper information page is the same as the sheet information of the previous page, a first print control means for one-side printing on the first surface to rotate the page face 180 degrees this next page, A generating unit configured to generate page information of the second side that has not been printed by the first printing control unit; a storage unit storing the page information generated by the generating unit; and the first printing control unit. Printed paper with duplex printing or single-sided printing on the first side is collectively set on a tray, and selected based on the page information stored in the storage unit for the second side of the set printed paper Second printing control means for controlling to perform printing automatically.

The print control program according to the invention of claim 21 judges for each page whether or not each page is capable of automatic double-sided printing based on the paper information given to each page of the print instruction information from the print instruction apparatus. If the next page is present and the paper information of the next page is the same as the paper information of the previous page, the page and the next page are determined. Is printed on both sides automatically, and if there is no next page or the paper information on the next page is not the same as the paper information on the page, control is performed so that the page is printed on one side on the first side. If it is determined that the automatic double-sided printing is not possible by the determining means, and there is a next page and the paper information of the next page is the same as the paper information of the previous page, the next page is Generating a first print control means, the page information of the second surface which has not been printed in the first print control means for simplex printing an over-di surface relative to the rotating 180 degrees the first surface Generating means for storing, storing means for storing the page information generated by the generating means, and printed paper on which double-sided printing or single-sided printing on the first side is collectively set in a tray. , And functioning as second print control means for controlling to selectively print the second side of the set printed paper based on the page information stored in the storage means.

  According to the first aspect of the present invention, it is possible to execute double-sided printing including pages for which automatic double-sided printing is not possible with as little user intervention as possible.

According to the invention of claim 2 , in addition to the effect of the invention of claim 1, double-sided printing can be appropriately performed on a page for which automatic double-sided printing is determined to be impossible.

According to the invention of claim 3 , in addition to the effect of the invention of claim 1, printing on the second surface of the printed paper can be easily performed.

According to the invention of claim 4 , in addition to the effect of the invention of claim 1, printing on the second surface of the printed paper can be quickly performed.

According to the invention of claim 5 , in addition to the effect of the invention of claim 1, it is possible to easily perform the printing on the second surface of the printed paper, and in particular the second to print on the printed paper. When the number of pages on the surface is large, the storage capacity of the storage means can be reduced.

According to the invention of claim 6 , in addition to the effect of the invention of claim 1, it is possible to accurately instruct a user who is not conscious of automatic duplex printing and manual duplex printing to reset printed paper.

According to the invention of claim 7 , in addition to the effect of the invention of claim 1 , the double-sided printing process is not completed by not outputting the final sheet before the printing by the printing control means on the first side. Can be explicitly indicated.

According to the invention of claim 8 , in addition to the effect of the invention of claim 1, it is possible to accurately instruct a user who is not conscious of automatic duplex printing and manual duplex printing to reset printed paper.

According to the ninth aspect of the invention, in addition to the effect of the first aspect of the invention, it is possible to accurately instruct a user who is not conscious of automatic duplex printing and manual duplex printing to reset printed paper.

According to the invention of claim 10 , in addition to the effect of the invention of claim 1, it is possible to accurately instruct the user who is not conscious of automatic duplex printing and manual duplex printing to reset printed paper.

According to the invention of claim 11 , in addition to the effect of the invention of claim 1, it is possible to accurately instruct the user who is not conscious of automatic duplex printing and manual duplex printing to reset printed paper.

According to the twelfth aspect of the invention, in addition to the effect of the first aspect of the invention, it is possible to accurately instruct the resetting of the printed paper even when another print instruction information is received after the first side printing is completed.

According to the invention of claim 13 , in addition to the effect of the invention of claim 1, even when another print instruction information is received after the first side printing is finished, an instruction to reset the printed paper easily and accurately is given. it can.

According to the invention of claim 14 , in addition to the effect of the invention of claim 1, even when another print instruction information is received after the first side printing is completed, an instruction for resetting the printed paper is easily and accurately given. it can.

According to the fifteenth aspect of the invention, in addition to the effect of the first aspect of the invention, even when another print instruction information is received after the first-side printing is completed, an instruction for resetting the printed paper is easily and accurately given. it can.

According to the invention of claim 16 , in addition to the effect of the invention of claim 1, even when another print instruction information is received after the first-side printing is finished, an instruction for resetting the printed paper is easily and accurately given. it can.

According to the invention of claim 17 , in addition to the effect of the invention of claim 1, even when another print instruction information is received after the first side printing is finished, an instruction for resetting the printed paper is easily and accurately given. it can.

According to the eighteenth aspect of the invention, in addition to the effect of the first aspect of the invention, it is possible to easily and accurately instruct the resetting of the printed paper.

According to the nineteenth aspect of the invention, in addition to the effect of the first aspect of the invention, it is possible to easily and accurately instruct the resetting of the printed paper.

According to the invention of claim 20 , it is possible to provide a printing system capable of executing double-sided printing including pages for which automatic double-sided printing is not possible with as little user intervention as possible.

According to the twenty-first aspect of the present invention, it is possible to provide a printing program capable of executing double-sided printing including pages for which automatic double-sided printing is not possible with as little user intervention as possible.

  Embodiments of a printing apparatus, a printing system, and a printing control program according to the present invention will be described below in detail with reference to the accompanying drawings.

  FIG. 1 is a block diagram showing an embodiment of a printing system to which the present invention is applied.

  A printing system 100 shown in FIG. 1 transmits a print job (print instruction information) including a print instruction apparatus 10 that transmits a print job to the printing apparatus 20 and a double-sided print instruction from the print instruction apparatus 10 via a local connection or a network. And printing apparatus 20 that performs double-sided printing based on this print job.

  The printing apparatus 20 has one or a plurality of paper trays for storing printing paper (not shown) and a manual feeding tray for manual printing, and has an automatic duplex printing function for automatically printing on both sides of the paper and two single-side printing. It has a manual duplex printing function for performing duplex printing. Here, since the automatic double-sided printing function is well known, detailed description thereof is omitted.

  Now, a print job including a double-sided printing instruction from the printing instruction apparatus 10 may include a page with a designation of paper (size, paper quality, etc.) that cannot be automatically duplexed by the printing apparatus 20, and in this case, The printing apparatus 20 determines whether or not a sheet that cannot be automatically duplex printed is specified for each page of the print job. Printing is performed using the double-sided printing function, but only one side (back side) is printed together with printing using the automatic double-sided printing function in the first printing for pages with paper designation that cannot be automatically duplexed. Printing is executed, and page information necessary for printing on the other unprinted surface (front surface) is temporarily stored. Thereafter, in the second printing, printing (manual duplex printing) is selectively performed on the other unprinted surface (front surface) using the printing function based on the stored page information.

  In order to realize the above functions, the printing apparatus 20 includes a double-sided printability determination unit 21, a page data creation unit 22, a paper information storage unit 23, a paper information reading unit 24, a paper information comparison unit 25, a job information storage unit 26, A job information reading unit 27 and a job information deleting unit 28 are provided.

  The double-sided printing enable / disable determining unit 21 analyzes the print job received from the print instruction apparatus 10 and determines whether there is a designation of paper that cannot be automatically double-sided printed for each page.

  The page data creation unit 22 prints on the other unprinted surface (front surface) based on the print job, for the page determined by the duplex printing enable / disable determining unit 21 to be designated as paper that cannot be automatically duplex printed. Create the necessary page data.

  The paper information storage unit 23 stores the paper information of each page specified by the print job, and the paper information reading unit 24 reads the paper information of each page stored in the paper information storage unit 23.

  The paper information comparison unit 25 compares the paper information read from the paper information storage unit 23 by the paper information reading unit 24.

  The job information storage unit 26 is information necessary for printing on the other surface (front surface) that has not been printed in the second printing created using the received print job and the page data created by the page data creation unit 22; That is, paper information such as paper size and quality and page information (job information) of pages that need to be printed manually are temporarily stored, and the job information reading unit 27 stores the information in the job information storage unit 26 at the time of the second printing. Read the job information.

  The job information deletion unit 28 deletes the job information stored in the job information storage unit 26 after the end of the second printing.

  FIG. 2 is a diagram illustrating an example of a data structure of job information stored in the job information storage unit 26 illustrated in FIG.

  Here, a print job including a double-sided print instruction received from the print instruction apparatus 10 is described in a page description language (for example, PDL (Page Description Language)), and the total number of pages is 28 pages, the third page, and the fourth page. The paper information of the eyes is different from the page size (A4) of the other pages. The paper size width is 220 mm, the paper size width is 220 mm, and the paper information of the 9th and 10th pages is the pages of the other pages. This shows a case of a thick paper that is the same as the size (A4) but cannot be automatically printed on both sides.

  In this case, the job information stored in the job information storage unit 26 is the second printing on the PDL header information describing the print job, and printing on the other unprinted surface (front surface) using the manual printing function. The header information 201 includes a pointer to the manual duplex printing page to be performed, and the page information 202 and 203 used in the second printing referred to by the pointer to the manual duplex printing page.

  That is, the header information 201 in this case includes user identification information of the print job, file name, total number of pages (28), number of manual duplex printing required (2), layout information (both sides), and maximum paper size width (220 mm). In addition, a pointer to the manual duplex printing page (page information 202 of the third page) and a pointer to the manual duplex printing page (page information 203 of the ninth page) are described.

  The page information 202 includes a pointer to the next page information (page information 203), a pointer to the previous page information, a page number (3) for manual duplex printing, a paper size (undefined size), and paper quality (plain paper). The expanded page data of the third page is described.

  The page information 203 includes a pointer to the next page information, a pointer to the previous page information (page information 202), a page number (9) for manual duplex printing, paper size (A4), paper quality (thick paper), 9 pages. The expanded page data of the eyes is described.

  FIG. 3 is a flowchart showing an operation of the first printing (printing by the first printing control) in the printing apparatus 20 of the printing system 100 shown in FIG.

  When a print job is received from the print instruction apparatus 10 and there is a double-sided print instruction (step 301), first, the print paper information of the print page of the print job is read from the paper information storage unit 23 by the paper information reading unit 24 (step 302). It is determined whether automatic duplex printing is possible (step 303). In this case, the paper information of the printed page is NO for the third page, which is an irregular size, and the ninth page, which is a thick paper, but YES for other pages.

  For the first page, it is determined in step 303 that automatic double-sided printing is possible (YES in step 303). Next, there is a next page, and it is checked whether paper information matches the previous page (step 304). This determination is made by comparing the paper information of the next page read from the paper information storage unit 23 by the paper information reading unit 24 with the paper information of the previous page by the paper information comparison unit 25. Here, since the paper information of the next page (second page) matches the paper information of the previous page (first page) (YES in step 304), A4 of paper fed from the paper tray by the automatic duplex printing function is stored. Double-sided printing is performed in which the image of the first page is printed on the front surface (first surface) of the paper and the image of the second page is printed on the back surface (second surface) (step 305).

  Next, it is checked whether the paper width used in the printing is the maximum paper width in the print job (step 306). In this case (YES in step 306), 210 mm, which is the A4 sheet width of the first and second pages, is stored with respect to the initial value of 0 mm (step 311). Next, it is checked whether all pages are completed (step 307). Since all pages are not completed (NO in step 307), the process returns to step 302, and the paper information of the next print page (third page) is read.

  Next, it is checked whether or not the third page can be automatically duplex printed (step 303). Since the print size of the paper information of the third page is an irregular size with a sheet width of 220 mm, it is assumed that automatic duplex printing is not possible here. Determination is made (NO in step 303). In this case, the page information of the third page including the page data of the third page that cannot be automatically printed on both sides created by the page data creation unit 22 is stored in the job information storage unit 26 (step 308).

  Then, it is checked whether there is a next page of the page corresponding to the stored page information and whether the paper information of the next page matches the paper information of the previous page (step 309). Here, since the paper information of the next page (page 4) matches the paper information of the previous page (page 3) (YES in step 309), the page surface is rotated 180 degrees and the fourth page is printed on one side. (Step 310).

  Next, it is checked whether the paper width used in this printing is the maximum paper width (220 mm) in the main print job (step 306). Here, the maximum paper width is compared with the previously stored paper size width 210 mm. Since this is the width (YES in step 306), the maximum sheet size is stored in the job information storage unit 26 (step 311), and then it is checked whether all pages are completed (step 307). Since it is not completed (NO in Step 307), the process returns to Step 302, and the paper information of the next print page (5th page) is read.

  On the fifth page, it is determined in step 303 that automatic duplex printing is possible (YES in step 303). Next, there is a next page, and it is checked whether paper information matches the previous page (step 304). Since the paper information of the page (page 6) and the paper information of the previous page (page 5) match (YES in step 304), the front surface of the paper fed from the paper tray by the automatic duplex printing function (first page) The double-sided printing is performed in which the image of the fifth page is printed on the second surface and the image of the sixth page is printed on the second surface (step 305).

  Thereafter, the same operation is repeated, and when the paper information on the ninth page is read in step 302, the paper information on the ninth page is thick paper, so it is determined that automatic duplex printing is not possible (NO in step 303). In this case, the page information of the ninth page including the page data of the ninth page that cannot be automatically printed on both sides created by the page data creation unit 22 is stored in the job information storage unit 26 (step 308). There is a next page of the page corresponding to the page information, and it is checked whether or not the paper information of the next page matches the paper information of the previous page (step 309). Here, the paper of the next page (10th page) is checked. Since the information matches the paper information of the previous page (9th page) (YES in step 309), the surface of the next page (10th page) is rotated 180 degrees and the single-sided mark is printed (Step 310).

  The following pages are determined to be capable of automatic duplex printing in step 303 (YES in step 303), and the next page exists and it is determined that the paper information matches the previous page (YES in step 304). As a result, an image is printed on the front surface (first surface) of the paper fed from the paper tray, and the image of the next page is printed on the back surface (second surface) (step 305). Repeat until. If it is determined in step 307 that all pages have been completed (YES in step 307), the first printing operation (printing by the first printing control) ends.

  If it is determined in step 304 that there is a next page and the paper information does not match that of the previous page (NO in step 304), double-sided printing is not possible, so single-sided printing of the page is performed (step 312). Proceed to 306. Also, if it is determined in step 309 that there is a next page and the paper information does not match the previous page, double-sided printing cannot be performed, so single-sided printing is performed based on the page information stored in step 309 (step 313). Proceed to step 306.

  FIG. 4 is a diagram showing a result of the first printing (printing by the first printing control) by the operation of the flowchart shown in FIG.

  The print result shown in FIG. 4 shows that the total number of pages is 28 pages, the paper information of the third page and the fourth page is different from the page size (A4) of other pages, and the paper size width is 220 mm that cannot be automatically printed on both sides. The figure shows a case of a standard size paper, a thick paper in which the paper information of the 9th and 10th pages is the same as the page size (A4) of other pages, but automatic duplex printing is not possible.

  In this case, the first page and the second page are printed on both sides of the first sheet of the first sheet, and the fourth page is rotated 180 degrees on the second sheet of an irregular size of 220 mm on one side. The 5th page to the 8th page are printed on both sides of the 3rd sheet to the 4th sheet of the third sheet and the 4th sheet, and the 10th page is printed on the 5th sheet of the 5th sheet of thick paper. The 11th page to the 28th page are printed on both sides from the 6th sheet to the 14th sheet on the 14th sheet and discharged.

  Next, in order to print the third page and the ninth page that were not printed in the first printing, the second printing is performed.

  FIG. 5 is a flowchart showing an operation related to the second printing instruction.

  In the second printing, the job information shown in FIG. 2 stored in the job information storage unit 26 at the time of the first printing is designated (step 501), and the first printed sheets shown in FIG. This is done by setting it on the tray (step 502) and giving a print start instruction (step 503).

  FIG. 6 is a diagram illustrating a state in which the first printed sheet is set on the manual feed tray in order to perform the second printing.

  As shown in FIG. 6, in this case, the first printed sheets shown in FIG. 4 are stacked and set in the manual feed tray with the upper right corner aligned. At this time, the unprinted surfaces of the second paper and the fifth paper face downward, and the paper is set on the manual feed tray in the direction toward the paper feeding direction.

  FIG. 7 is a flowchart showing an operation of the second printing (printing by the second printing control) in the printing apparatus 20 of the printing system 100 shown in FIG.

  In the second printing, first, the job information stored in the job information storage unit 26 is read by the job information reading unit 27 (step 701), and the stored page information and the page information of the current page (first page) are read. (Step 702), it is determined whether printing is necessary on the surface of the first sheet (step 703).

  Here, since the first paper has already been printed on both sides and does not require printing on the front surface (NO in step 703), the current page information is incremented to the second page, and this first paper is printed on both sides. The paper is discharged through the path (paper transport path) (step 704).

  Next, it is checked whether or not all pages are completed (step 705). Since all pages are not completed here (NO in step 705), the process returns to step 702 and the page information stored and the current page (third page) are returned. Compare with information.

  From this comparison, it is determined that the third page needs to be printed on the front side of the second sheet on which the fourth page is printed on the back side (YES in step 703), and the stored page information, that is, the third page The third page is printed on the unprinted surface (front surface) of the second sheet in accordance with the information (sheet information, maximum sheet size width information) (step 706).

  Next, it is checked whether all pages are completed (step 705), and the above processing is repeated until it is determined in step 703 that the next printing is necessary.

  In step 702, when the stored page information is compared with the page information of the current page (9th page), the 9th page is printed on the front side of the fifth paper on which the 10th page is printed on the back side. Is determined to be necessary (YES in step 703), and in this case, the ninth page is printed on the unprinted surface (front surface) of the fifth sheet (step 706).

  Thereafter, the same operation is repeated, and if it is determined in step 707 that all pages are completed (YES in step 707), then the job information stored in the job information storage unit 26 for the second printing is deleted. In step 707, if it is determined that the job information is not to be deleted (NO in step 707), it is determined that the second printing process is terminated and deleted. If this is the case (YES in step 707), the corresponding job information stored in the job information storage unit 26 is deleted by the job information deletion unit 28 (step 708), and the second printing process is terminated.

  At the time of the second printing, the paper on which double-sided printing has already been performed is reversed by the double-sided printing pass, so that the paper is discharged in a state where all the pages are aligned.

  In the first embodiment, in order to perform the second printing, the job information stored in the job information storage unit 26 is the page data expanded on the page information 202 and 203 as shown in FIG. In the second embodiment, the page information expanded corresponding to each page information 202 and 203 is not added and stored, but the job information before expansion is added to the header information 201 in the second embodiment. save.

  FIG. 8 is a diagram illustrating an example of a data structure of job information stored in the job information storage unit 26 in the second embodiment.

  Also here, a print job including a double-sided print instruction received from the print instruction apparatus 10 is described in a page description language (for example, PDL (Page Description Language)), and the total number of pages is 28 pages, the third page, and the fourth page. The paper information of the eyes is different from the page size (A4) of the other pages. The paper size width is 220 mm, the paper size width is 220 mm, and the paper information of the 9th and 10th pages is the pages of the other pages. This shows a case of a thick paper that is the same as the size (A4) but cannot be automatically printed on both sides.

  In this case, the job information stored in the job information storage unit 26 is manual duplex printing in which printing is performed on the other unprinted surface using the manual printing function in the PDL header information describing the print job in the second printing. It consists of a pointer to the print page, print job information 801 with job data added, and page information 802 and 803 used in the second printing referred to by the pointer to the manual duplex printing page.

  Here, the print job information 801 includes print job user identification information, file name, total number of pages (28), manual duplex printing required number (2), layout information (both sides), maximum paper size width (220 mm), A pointer to the manual duplex printing page (page information 802 on the third page), a pointer to the manual duplex printing page (page information 803 on the ninth page), and job data including page data of each page before development are described. .

  The page information 802 includes a pointer to the next page information (page information 803), a pointer to the previous page information, a page number (3) for manual duplex printing, a paper size (undefined size), and paper quality (plain paper). However, the expanded page data of the third page is not described.

  The page information 203 describes the pointer to the next page information, the pointer to the previous page information (page information 802), the page number (9) for manual duplex printing, the paper size (A4), and the paper quality (thick paper). However, the expanded page data of the ninth page is not described.

  In this configuration, at the time of the second printing, the page data before the third page and the ninth page included in the job data described in the print job information 801 are expanded to print the third and ninth pages. I do.

  FIG. 9 is a diagram illustrating a state in which the first printed sheet is set on the manual feed tray in order to perform the second printing.

  As shown in FIG. 9, in this case, the first printed sheets shown in FIG. 4 are stacked and set on the manual feed tray with the upper left corner aligned. At this time, the unprinted surfaces of the second paper and the fifth paper face downward, and the paper is set on the manual feed tray in the direction toward the paper feeding direction.

  During the second printing, the third page is printed on the third page based on the page data developed in consideration of the paper width in accordance with the paper width and the paper alignment state. In this example, the upper left corner of the paper is aligned and set in the manual feed tray. However, as shown in FIG. 6, the upper right corner of the paper may be aligned and set in the manual feed tray. The third page is printed based on the page data developed in consideration of the paper width according to the paper alignment state.

  In the third exemplary embodiment, the printing apparatus 20 determines whether or not a sheet that cannot be automatically duplex printed is designated for each page of the print job, and a page that has a sheet designation capable of automatic duplex printing is printed. Printing is performed using the automatic duplex printing function of the apparatus 20, but for a page having a paper designation that cannot be automatically duplexed, the first printing is performed together with printing using the automatic duplex printing function on one side. Only the (front side) printing is executed, and page information necessary for printing on the other unprinted side (back side) is temporarily stored. Thereafter, in the second printing, based on the stored page information, printing (manual duplex printing) is selectively performed on the other unprinted side (back side) using the printing function.

  The printing system employed in the third embodiment is the same as the printing system shown in FIG. 1, and will be described below with reference to FIG.

  FIG. 10 is a diagram illustrating an example of a data structure of job information according to the third embodiment stored in the job information storage unit 26 illustrated in FIG.

  Here, a print job including a double-sided print instruction received from the print instruction apparatus 10 is described in a page description language (for example, PDL (Page Description Language)), and the total number of pages is 28 pages, the third page, and the fourth page. The paper information of the eye and the paper information of the 9th and 10th pages are the same as the page size (A4) of the other pages, but the case is a thick paper that cannot be automatically duplex printed.

  In this case, the job information stored in the job information storage unit 26 is printed on the PDL header information describing the print job for the second time, and printing is performed on the other unprinted surface (front surface) using the print function. It includes header information 1001 to which a pointer to a manual duplex printing page is added, and page information 1002 and 1003 used in the second printing referred to by the pointer to the manual duplex printing page.

  That is, the header information 1001 in this case includes user identification information of a print job, file name, total number of pages (28), manual duplex printing required number (2), layout information (both sides), maximum paper size width (210 mm). A pointer to the manual duplex printing page (page information 1002 of the fourth page) and a pointer to the manual duplex printing page (page information 1003 of the 10th page) are described.

  The page information 1002 includes a pointer to the next page information (page information 1003), a pointer to the previous page information, a page number (4) for manual duplex printing, a paper size (A4), paper quality (thick paper), and 4 pages. The page data in which the eyes are expanded is described.

  Page information 1003 includes a pointer to next page information, a pointer to previous page information (page information 1002), a page number (10) for manual duplex printing, a paper size (A4), paper quality (thick paper), 10 pages The page data in which the eyes are expanded is described.

  FIG. 11 is a flowchart illustrating the operation of the first printing (printing by the first print control) of the third embodiment in the printing apparatus 20 of the printing system 100 illustrated in FIG. 1.

  When a print job is received from the print instruction apparatus 10 and a double-sided print instruction is received (step 1101), first, print paper information of a print page of the print job is read (step 1102), and it is determined whether automatic double-sided printing is possible (step 1102). 1103). In this case, the paper information of the printed page is NO for the third and ninth pages, which are thick paper, but YES for the other pages.

  For the first page, it is determined in step 1103 that automatic duplex printing is possible (YES in step 1103). Next, there is a next page, and it is checked whether paper information matches the previous page (step 1104). This determination is made by comparing the paper information of the next page read from the paper information storage unit 23 by the paper information reading unit 24 with the paper information of the previous page by the paper information comparison unit 25. Here, since the paper information of the next page (second page) matches the paper information of the previous page (first page) (YES in step 1104), A4 of paper fed from the paper tray by the automatic duplex printing function is stored. Double-sided printing is performed in which the image of the first page is printed on the front surface (first surface) of the paper and the image of the second page is printed on the back surface (second surface) (step 1105).

  Next, it is checked whether the paper width used in this printing is the maximum paper width (210 mm) in the main print job (step 1106). Here, since the sheet is A4 and has the maximum sheet width (210 mm) (YES in step 1106), the maximum sheet size is stored in the job information storage unit 26 (step 1107), and it is checked whether all pages are completed next. In step 1108, since all pages are not completed (NO in step 1108), the process returns to step 1102, and the paper information of the next print page (third page) is read.

  Then, it is checked whether automatic printing on the third page is possible (step 1103). Since the paper quality of the paper information on the third page is cardboard, it is determined that automatic double-sided printing is not possible (NO in step 1103). ). In this case, the page information of the third page including the page data of the third page that cannot be automatically printed on both sides created by the page data creation unit 22 is stored in the job information storage unit 26 (step 1109).

  Then, it is checked whether there is a next page of the page corresponding to the stored page information and whether the paper information on the next page matches the paper information on the previous page (step 1110). Here, since the paper information of the next page (page 4) matches the paper information of the previous page (page 3) (YES in step 1110), the page of page 3 stored in the job information storage unit 26 is stored. Page information of the fourth page based on the page data of the fourth page created by the page data creation unit 22 by performing the single-sided printing of the third page with the information and the page information of the third page saved in the job information saving unit 26 (Step 1111).

  Next, it is checked whether the paper width used in this printing is the maximum paper width (210 mm) in the main print job (step 1106), and then whether all pages are completed is checked (step 1108).

  Here, since all pages are not completed (NO in step 1108), the process returns to step 302, and the paper information of the next print page (fifth page) is read (step 1102).

  For the fifth page, it is determined in step 1103 that automatic duplex printing is possible (YES in step 1103). Next, there is a next page, and it is checked whether the previous page and paper information match (step 1104). Since the paper information of the page (page 6) matches the paper information of the previous page (page 5) (YES in step 1104), the front surface of the paper fed from the paper tray by the automatic duplex printing function (first page) The double-sided printing is performed in which the image of the fifth page is printed on the second surface and the image of the sixth page is printed on the rear surface (second surface) (step 1105).

  Thereafter, the same operation is repeated, and when the paper information of the ninth page is read out in step 1102, it is determined that automatic duplex printing is not possible because the paper information of the ninth page is thick paper (NO in step 1103). In this case, the page information of the ninth page including the page data of the ninth page that cannot be automatically printed on both sides created by the page data creation unit 22 is stored in the job information storage unit 26 (step 1109), and then stored. It is checked whether there is a next page of the page corresponding to the page information and the paper information on the next page matches the paper information on the previous page (step 1100). Here, the paper on the next page (10th page) is used. Since the information matches the paper information of the previous page (9th page) (YES in step 111), the 9th page stored in the job information storage unit 26 Page information is printed on the single-sided page of the page information, and the page information of the ninth page stored in the job information storage unit 26 is replaced with the page data of the tenth page generated by the page data generation unit 22. Update with page information (step 1111).

  The following pages are determined to be capable of automatic duplex printing in step 1103 (YES in step 1103), and there is a next page, and it is determined that the paper information matches the previous page (YES in step 1104). As a result, an image is printed on the front surface (first surface) of the paper fed from the paper tray, and the image of the next page is printed on the back surface (second surface) (step 1105). Repeat until. If it is determined in step 1108 that all pages are complete (YES in step 1108), the first printing (printing by the first printing control) is finished.

  If it is determined in step 1104 that there is a next page and the paper information does not match that of the previous page (NO in step 1104), double-sided printing cannot be performed, so single-sided printing of the page is performed (step 1112). Proceed to 1106. Also, if it is determined in step 1110 that there is a next page and the paper information does not match the previous page, double-sided printing cannot be performed. Therefore, single-sided printing is performed based on the page information stored in step 1109, and the second printing is performed. In step 1113, the lost page information that is no longer needed is deleted (step 1113).

  FIG. 12 is a diagram illustrating a result of the first printing (printing by the first printing control) by the operation of the flowchart illustrated in FIG. 11.

  The print result shown in FIG. 12 shows that the total number of pages is 28 pages, the third page and the fourth page, the ninth page and the tenth page have the same paper information as the page size (A4) of the other pages, but automatic duplexing. This shows the case of thick paper that cannot be printed.

  In this case, the first page and the second page are printed on both sides of the first sheet of the first sheet, the third page is printed on one side of the second sheet of the second sheet of thick paper, and from the fifth page. Up to the eighth page is printed on both sides of the fourth and fourth third and fourth sheets, and the tenth page is printed on one side on the surface of the fifth fifth sheet of thick paper. Pages from page 28 to page 28 are printed on both sides of the sixth to fourteenth sheets from the sixth sheet to the fourteenth sheet, and then discharged.

  Next, the second printing is performed in order to print the fourth page and the tenth page that were not printed by the first printing.

  FIG. 13 is a flowchart showing an operation related to the second print instruction.

  In the second printing, the job information shown in FIG. 10 stored in the job information storage unit 26 at the time of the first printing is specified (step 1301), and the first printed paper shown in FIG. Is set on the tray (step 1302), and printing is instructed (step 1303).

  FIG. 14 is a diagram illustrating a state in which the first printed sheet is set on the tray in order to perform the second printing.

  As shown in FIG. 14, in this case, the first printed sheets shown in FIG. 10 are stacked and turned over and set on the tray. At this time, the unprinted surfaces of the second paper and the fifth paper face upward, and the paper is set on the tray in the direction toward the paper feeding direction.

  FIG. 15 is a flowchart illustrating the operation of the second printing (printing by the second printing control) in the printing apparatus 20 according to the third embodiment.

  In the second printing, first, the job information stored in the job information storage unit 26 is read (step 1501), and the stored page information is compared with the page information of the current page (first page) ( In step 1502), it is determined whether printing is necessary on the back side of the first sheet (step 1503).

  Here, since the first sheet has already been printed on both sides and does not require printing on the back side (NO in step 1503), the current page information is incremented to the second page, and the first sheet is printed on one side. The paper is discharged through the path (paper transport path) (step 1504).

  Next, it is checked whether or not all pages are completed (step 1505). Since all pages are not completed here (NO in step 1505), the process returns to step 1502 to store the saved page information and the current page (third page). Compare with information.

  From this comparison, it is determined that the fourth page needs to be printed on the back side of the second sheet on which the third page is printed on the front side (YES in step 1503), and the stored page information, that is, the fourth page The fourth page is printed on the unprinted side (back side) of the second sheet according to the information (sheet information, maximum sheet size width information) (step 1506).

  Next, it is checked whether all pages are completed (step 1505), and the above processing is repeated until it is determined in step 1503 that the next printing is necessary.

  In step 1502, when the saved page information and the page information of the current page (9th page) are compared, the 10th page is printed on the back side of the fifth sheet on which the 9th page is printed on the front side. Is determined to be necessary (YES in step 1503), and in this case, the tenth page is printed on the unprinted surface (back surface) of the fifth sheet (step 1506).

  Thereafter, the same operation is repeated, and if it is determined in step 1507 that all pages are completed (YES in step 1507), then the job information stored in the job information storage unit 26 for the second printing is deleted. In step 1507, if it is determined not to delete the job information (NO in step 1507), it is determined that the second printing process is terminated and deleted. In this case (YES in step 1507), the corresponding job information stored in the job information storage unit 26 is deleted (step 1508), and the second printing process is terminated.

  In the fourth embodiment, when there are a plurality of paper designations capable of automatic double-sided printing and paper designations that require manual double-sided printing, as in the first to third embodiments, automatic printing is performed in the first printing (first printing control). For pages corresponding to double-sided printing, automatic double-sided printing for printing the first side and the second side is executed. For pages corresponding to manual double-sided printing, only single-sided printing is executed for the first side, and the second printing (first Printing control), the printed sheets discharged by the first printing are collectively set in the manual feed tray, the sheets printed by automatic duplex printing are discharged as they are, and the second side is printed by manual duplex printing. For the paper that needs to be printed, only the corresponding page is printed on the second side. In the fourth embodiment, before the second printing (first printing control), user intervention is performed for printing the second side. With a means to notify the need for It differs from the first to third embodiments.

  FIG. 16 is a block diagram illustrating an embodiment of a printing system to which the fourth embodiment is applied.

  The printing system 200 shown in FIG. 16 transmits a print job (print instruction information) including a print instruction apparatus 210 that transmits a print job to the printing apparatus 220 and a double-sided print instruction from the print instruction apparatus 210 via a local connection or a network. The printer 220 is configured to receive and execute double-sided printing based on the print job.

  Similar to the printing apparatus 20 shown in FIG. 1, the printing apparatus 220 has one or a plurality of paper trays for storing printing paper (not shown) and a manual feeding tray for manual printing, and automatically prints on both sides of the paper. An automatic double-sided printing function and a manual double-sided printing function for performing double-sided printing by two single-sided printings.

  A print job including a double-sided printing instruction from the printing instruction apparatus 210 may include a page with a designation of paper (size, paper quality, etc.) that cannot be automatically duplexed by the printing apparatus 220. In this case, the printing apparatus In step 220, it is determined whether or not a sheet for which automatic duplex printing is not possible is specified for each page of the print job. Using the function, double-sided printing is performed on the first side and the second side, but for pages with paper designation that cannot be automatically duplexed, printing using the automatic duplexing function is performed in the first printing. At the same time, printing on only one side (first side) is executed, and page information necessary for printing on the other side (second side) that has not been printed is temporarily stored. In the second printing, printing (manual duplex printing) is selectively performed on the other unprinted surface (front surface) using the printing function based on the stored page information.

  In the fourth embodiment, prior to the second printing (first printing control), notification is made that user intervention is required for printing the second surface.

  In order to realize the above functions, the printing apparatus 220 includes a user interface unit 221, a host interface unit 222, a print data generation unit 223, a duplex printing determination unit 224, an automatic duplex printing control unit 225, a manual duplex printing control unit 226, and printing. A data storage unit 227, a print page management unit 228, and a print job management unit 229 are provided.

  The user interface unit 221 performs interface processing such as an instruction from the user using an operation panel (not shown).

  The host interface unit 222 performs processing for receiving print data from the print instruction apparatus 210.

  The print data generation unit 223 analyzes the print data from the print instruction apparatus 210, changes to intermediate data, and performs processing to generate a bitmap image from the intermediate data.

  The duplex printing determination unit 224 determines whether or not to perform automatic duplex printing at the first printing.

  The automatic double-sided printing control unit 225 controls execution of automatic double-sided printing in which printing is continuously performed on the second side of the printing paper after printing on the first side of the printing paper at the first printing.

  The manual double-sided printing control unit 226 controls execution of single-sided printing in the first printing, and controls execution of single-sided printing on the unprinted side in the second printing.

  The print data storage unit 227 stores print job data for manual duplex printing in the second printing.

  The print page management unit 228 manages print status information of each page of the print job.

  The print job management unit 229 manages job information of print job data accumulated in the print data accumulation unit 227.

  1 corresponds to the duplex printing determination unit 224 illustrated in FIG. 16, and the page data creation unit 22 illustrated in FIG. 1 includes the print data generation unit illustrated in FIG. The paper information storage unit 23 and the job information storage unit 26 shown in FIG. 1 are included in the print data storage unit 227 shown in FIG. 16, and the paper information comparison unit 25 and job information shown in FIG. The reading unit 27 is included in the print page management unit 228 illustrated in FIG. 16, and the job information deletion unit 28 illustrated in FIG. 1 is included in the print job management unit 229 illustrated in FIG.

  FIG. 17 is a diagram illustrating an example of a print job instructed to be printed from the print instruction apparatus 210 illustrated in FIG. Here, plain paper is instructed as the first to fourth pages, and thick paper is instructed as the fifth and sixth pages. Here, when double-sided printing is instructed for this print data, automatic double-sided printing can be performed from the first page to the fourth page, but since thick paper is instructed on the fifth and sixth pages, automatic double-sided printing is possible. Printing is not possible.

  FIG. 18 is a flowchart showing processing of the print instruction apparatus 210 shown in FIG.

  The print instruction apparatus 210 opens a print job using an application (step 1801), and issues a print instruction to the printing apparatus 220 (step 1802). A print instruction from the print instruction apparatus 210 to the printing apparatus 220 is performed using a printer driver for the printing apparatus 220 provided in the print instruction apparatus 210.

  FIG. 19 is a flowchart showing a printing process in the printing apparatus 220 of the printing system 200 shown in FIG.

  When the print data from the print instruction apparatus 210 is received by the host interface unit 222 of the printing apparatus 220 (step 1901), the first printing (first printing control) is started.

  First, it is checked whether the received print data has been instructed to be printed on both sides by the user interface unit 221 (step 1902). If there is no instruction to print on both sides (NO in step 1902), single-sided printing of all pages is executed. (Step 1903), this process is terminated.

  If there is an instruction for double-sided printing in step 1902 (YES in step 1902), the print data generation unit 223 generates print data in consideration of the print orientation of the front and back surfaces, and after generating the print data, the page Based on the page attributes such as the paper size and paper quality of the next page, the double-sided printing determination unit 224 determines whether the page can be automatically printed on both sides (step 1904).

  If it is determined that automatic double-sided printing is possible (YES in step 1904), execution of automatic double-sided printing is controlled by the automatic double-sided printing control unit 225 (step 1905). The duplex printing information is stored in the print page management unit 228 (step 1906). For example, when the print data is the data shown in FIG. 17, automatic double-sided print information from the first page to the fourth page is stored in the print page management unit 228.

  On the other hand, on the page determined to be impossible for automatic double-sided in step 2204 (NO in step 1904), in the example shown in FIG. 17, execution of single-sided printing (front side) of 5 pages is performed as the first page. Is controlled by the manual double-sided printing control unit 226 (step 1907), and manual double-sided printing information such as information indicating that printing of the second side is not performed is stored in the print page management unit 229 (step 1908). In the example shown in FIG. 17, the print data for page 6 is stored in the print data storage unit 227 in the example shown in FIG. 17 (step 1909).

  This process is repeated up to the page before the last page, and when the remaining last page is reached (YES in step 1910), the print page management unit 228 checks whether there is a page that cannot be automatically duplex printed (step 1911). If it is determined that automatic double-sided printing is possible for all the pages including the last page (NO in step 1911), automatic double-sided printing of the final page is performed (step 1912), and this process is terminated.

  If it is determined in step 1911 that even one page does not allow automatic double-sided printing (YES in step 1911), the first print control is interrupted without printing the last page, and the first print control is interrupted. Is warned to the user via the user interface unit 221 (step 1913).

  In this state, since the first printing control has not ended, the printing apparatus 220 enters a state waiting for an instruction from the user.

  FIG. 20 is a diagram illustrating an output form (a) of discharged paper in a state where the first printing process is interrupted, and an example (b) of a warning display on the user interface unit 221.

  FIG. 20A shows the state of the discharged paper in the state where the first print control is interrupted when the print data is the data shown in FIG. 17. Here, the first page to the fourth page are shown. Up to the eyes are printed on both sides of the first and second first and second sheets and discharged.

  FIG. 20A shows an example of a warning displayed on the user interface unit 221 in this state. Here, a message 2002 “Please press the button to print the final page” is displayed together with the button 2001. 221 is displayed.

  When the user recognizes that printing is interrupted via the user interface unit 221 and presses the button as instructed by the user interface unit 221 shown in FIG. 20B, the last page in the first printing control is displayed. Print control is executed (step 1915), and then a warning for paper reset information for the second print control is issued via the user interface unit 221 (step 1916).

  FIG. 21 is a diagram showing an output form (a) of discharged paper at the time of warning of paper resetting information, and an example (b) of warning display in the user interface unit 221.

  FIG. 21A shows the state of the ejected paper when the print data is the data shown in FIG. 17 at the time of warning of the paper resetting information. Here, the first page to the fourth page are shown. Are printed on both sides of the first and second first and second sheets and discharged, and the fifth page is printed on the surface of the third sheet of thick paper. It is discharged as blank paper for printing.

  FIG. 21A shows an example of a warning displayed on the user interface unit 221 in this state. Here, a message 2102 “Please press the button after paper setting will print the second page” together with the button 2101. Is displayed on the user interface unit 221.

  The user recognizes that the second printing control is necessary through the user interface unit 221, and resets the printed paper discharged by the first printing control to the tray, as shown in FIG. When the user presses the button as instructed by the user interface unit 221, it is determined that the paper has been reset (YES in step 1917), and the second print control is started.

  In the second printing control, printing is performed based on the automatic duplex printing page and manual duplex printing page managed by the print page management unit 228 and their discharge order information.

  That is, if it is determined in step 2216 that the page to be printed has been automatically duplexed (YES in step 2216), the printing is not performed, the paper is drawn from the tray, and the paper is fed to the output tray as it is. Perform (step 2217).

  On the other hand, if it is determined in step 2216 that the page to be printed has been printed only on the first side of manual duplex (NO in step 2216), the corresponding print data is extracted from the print data storage unit 227, and the second side In this case, execution of printing of the sixth page (second side printing) on the third sheet is controlled (step 2218). This operation is performed for all pages, and if it is determined in step 2219 that all pages have been completed (YES in step 2219), this process ends.

  In the fourth embodiment, the user interface unit 221 is used to display and notify that user intervention is required for printing the second surface before the second printing (first printing control). However, in the fifth embodiment, the user is informed that user intervention is necessary for printing the second side by printing a page indicating that fact and placing the page on the top side of the printed matter.

  The printing system shown in FIG. 16 can be used as the printing system employed in the fifth embodiment. Also in this embodiment, the printing system shown in FIG. Will be described.

  FIG. 22 is a flowchart illustrating the printing process of the printing apparatus 220 according to the fifth embodiment.

  When the print data from the print instruction apparatus 210 is received by the host interface unit 222 of the printing apparatus 220 (step 2201), the first printing (first printing control) is started.

  First, it is checked whether or not the received data is instructed to be printed on both sides by the user interface unit 221 (step 2202). If there is no instruction to print on both sides (NO in step 2202), single-sided printing of all pages is executed (step 2202). Step 2203), the process is terminated.

  If there is an instruction for double-sided printing in step 2202 (YES in step 2202), the print data generation unit 223 generates print data in consideration of the print orientation of the front and back surfaces, and after the print data is generated, the page From the page attributes such as the paper size and paper quality of the next page, the double-sided printing determination unit 224 determines whether the page can be automatically printed on both sides (step 2204).

  If it is determined that automatic double-sided printing is possible (YES in step 2204), the automatic double-sided printing control unit 225 controls execution of automatic double-sided printing (step 2205). The duplex printing information is stored in the print page management unit 228 (step 2206). For example, when the print data is the data shown in FIG. 17, automatic double-sided print information from the first page to the fourth page is stored in the print page management unit 228.

  On the other hand, if the page determined to be not automatically double-sided in step 2204 (NO in step 2204), the first page, that is, in the example shown in FIG. 17, five-page single-sided printing (front side) is executed. Is controlled by the manual double-sided printing control unit 226 (step 2207), and manual double-sided printing information such as information indicating that printing on the second side is not performed is stored in the print page management unit 229 (step 2208). In the example shown in FIG. 17, the print data for page 6 is stored in the print data storage unit 227 in the example shown in FIG. 17 (step 2209).

  This process is repeated until all pages are completed. When all pages are completed (YES in step 2210), the print page management unit 228 checks whether there is a page that cannot be automatically duplex printed (step 2211). If it is determined that there is no page for which automatic duplex printing is not possible (NO in step 2211), the process ends.

  If it is determined in step 2211 that there is a page which cannot be printed on both sides automatically even in one page (YES in step 2211), the first print control is terminated and the paper reset notification for the second print control is made. Is printed (step 2213), and the paper reset information is warned to the user via the user interface unit 221 (step 2214).

  FIG. 23 is a diagram illustrating an output form of the paper discharged when the first printing is completed and the paper reset notification printing is performed when the print data is the data shown in FIG. 17.

  In this case, the first to fourth pages are printed on both sides of the first and second first and second sheets and discharged, and the fifth page is printed on the surface of the third sheet of thick paper. Printed and the back side of the third paper is unprinted and is ejected with blank paper. To notify the user that the paper needs to be reset, "Reload paper" on it The fourth sheet on which the message is printed is discharged.

  FIG. 23 shows an output form in the case where the printing apparatus 220 employs face-down output in which the printed material is discharged with the front surface (first surface) down. In this case, the fourth sheet is an automatic double-sided output. Using the paper reversal sequence of the printing function, the printed matter is discharged face-up with the first side up.

  In addition, when the printing apparatus 220 employs face-up output that discharges the printed material with its front surface (first surface) facing up, the fourth sheet is discharged through a normal printing path.

  The user recognizes that the second printing control is necessary by discharging the fourth sheet on which the sheet reset notification printing is performed and warning of the sheet resetting information via the user interface unit 221, and the first printing is performed. The fourth sheet on which the sheet reset notification printing has been performed is removed from the printed sheets discharged by the control, and the sheet is reset on the tray. When it is determined that the sheet has been reset (YES in step 2215). ) The second printing control is started.

  In the second printing control, printing is performed based on the automatic duplex printing page and manual duplex printing page managed by the print page management unit 228 and their discharge order information.

  That is, if it is determined in step 2216 that the page to be printed has been automatically duplexed (YES in step 2216), the printing is not performed, the paper is drawn from the tray, and the paper is fed to the output tray as it is. Perform (step 2217).

  On the other hand, if it is determined in step 2216 that the page to be printed is only printed on the first side (NO in step 2216), the corresponding print data is extracted from the print data storage unit 227, and the second side, in this case Controls execution of printing of the sixth page (second side printing) on the third sheet (step 2218). This operation is performed for all pages, and if it is determined in step 2219 that all pages have been completed (YES in step 2219), this process ends.

  In the fifth embodiment, when the first printing control is finished, the fourth sheet pulled out from the tray is configured to perform printing for paper reset notification for the second printing control. In Example 6, paper for paper reset notification is printed in advance, and the paper for which this paper reset notification is printed is stored in a predetermined tray, and when the first print control is finished, the paper is reset. Without printing for setting notification, the printed paper for notification of paper reset stored in the predetermined tray is pulled out from the tray and discharged onto the printed matter. Other configurations are the same as those of the fifth embodiment.

  In the fifth embodiment, when the first printing control is finished, the fourth sheet pulled out from the tray is configured to perform printing for paper reset notification for the second printing control. In Example 7, first, the print data of all pages is analyzed, and if there is a page that cannot be automatically printed on both sides, the paper reset notification for the second printing control is performed prior to the execution of double-sided printing. It is configured to print and discharge and then perform duplex printing.

  The printing system shown in FIG. 16 can be used as the printing system employed in the seventh embodiment. Also in this embodiment, the printing system shown in FIG. 17 as an example of print data instructed by the print instruction apparatus 210 is used. Will be described.

  FIG. 24 is a flowchart illustrating the printing process of the printing apparatus 220 according to the seventh embodiment. Also in the seventh embodiment, when the print data from the print instruction apparatus 210 is received by the host interface unit 222 of the printing apparatus 220 (step 2401), the first printing (first printing control) is started.

  First, it is checked whether the received data has been instructed to be printed on both sides by the user interface unit 221 (step 2402). If there is no instruction to print on both sides (NO in step 2402), single-sided printing of all pages is executed (step 2402). Step 2403), the process is terminated.

  If there is an instruction for duplex printing in step 2402 (YES in step 2402), all pages of the print data are analyzed, and when the analysis is completed (YES in step 2404), automatic duplex printing in the print data is not possible. The presence / absence of a page is checked (step 2405).

  If it is determined that there is no page for which automatic duplex printing is not possible (NO in step 2405), automatic duplex printing for all pages is executed (step 2406), and this process ends.

  If it is determined in step 2405 that there is a page that cannot be printed on both sides automatically (YES in step 2405), as shown in FIG. 23 for the subsequent second printing (second printing control). Printing for paper reset notification is executed (step 2407).

  Next, the print data generation unit 223 generates print data in consideration of the printing direction of the front and back surfaces, and after generating the print data, from the page attributes such as the paper size of the page and the next page, paper quality, etc. The double-sided printing determination unit 224 determines whether the page can be automatically printed on both sides (step 2408).

  If it is determined that automatic double-sided printing is possible (YES in step 2408), the automatic double-sided printing control unit 225 controls execution of automatic double-sided printing (step 2409), and then automatically prints information such as printed page information. The duplex printing information is stored in the print page management unit 228 (step 2410). For example, when the print data is the data shown in FIG. 17, the automatic duplex printing information from the first page to the fourth page is stored in the print page management unit 228.

  On the other hand, in the page determined to be impossible for automatic double-sided in step 2408 (NO in step 2408), in the example shown in FIG. Is controlled by the manual double-sided printing control unit 226 (step 2411), and manual double-sided printing information such as information indicating that printing of the second side is not performed is stored in the print page management unit 229 (step 2412), and the second The surface print data, that is, in the example shown in FIG. 17, the print data for the sixth page is stored in the print data storage unit 227 (step 2413).

  This process is repeated until all pages are completed. When all pages are completed (YES in step 2414), the first print control is terminated, and the paper reset information for the second print control is displayed in the user interface unit 221. The user is warned via (step 2415).

  FIG. 25A shows the output form of the paper ejected when the first printing is completed and the paper reset notification printing is performed when the print job is the print job shown in FIG. FIG.

  In this case, the first first sheet on which the message “Please reset paper” is printed to notify the user that the paper needs to be reset on the bottom surface of the paper is ejected. The second and third sheets of the second to third sheets on which the first to fourth pages are printed on both sides are ejected, and the fourth cardboard of the fourth thick sheet on which the fifth page is printed on one side. 4 sheets are discharged.

  FIG. 25A shows an output form in the case where the printing apparatus 220 employs face-down output that discharges with the surface (first surface) of the printed material facing down.

  FIG. 25B shows a state where the sheets shown in FIG. In this state, the first sheet on which the message “Please reset the sheet” is printed is placed on the top of the printed material.

  The user recognizes that the second printing control is required by the warning of the paper resetting information via the user interface unit 221 and turns the printed paper discharged by the first printing control together to turn the paper Recognizing the presence of the first sheet on which the reset notification printing has been performed, except for the first sheet, the sheet is set in the tray with the sheet turned upside down.

  Thus, if it is determined that the paper has been reset (YES in step 2416), the second print control is started.

  In the second printing control, printing is performed based on the automatic duplex printing page and manual duplex printing page managed by the print page management unit 228 and their discharge order information.

In other words, if it is determined in step 2417 that the page to be printed has been automatically duplexed (YES in step 2417), the printing process is not performed, the sheet is drawn from the tray, and the sheet is fed to the output tray as it is. Perform (step 2418).
On the other hand, if it is determined in step 2417 that the page to be printed is only printed on the first side (NO in step 2417), the corresponding print data is extracted from the print data storage unit 227, and the second side, in this case Controls execution of printing of the sixth page (second side printing) on the third sheet (step 2419). This operation is performed for all pages, and if it is determined in step 2220 that all pages have been completed (YES in step 2220), this process ends.

  In the eighth embodiment, in a configuration in which a plurality of print instruction devices are connected to a printing apparatus via an interface, it is possible to easily determine a sheet that needs to be reset in the tray for the second printing. Has been added.

  That is, in the eighth embodiment, when a plurality of print jobs, that is, print job A and print job B are successively received from a plurality of print instruction apparatuses, first print control relating to print job A is performed. Next, the first print control related to the print job B is performed, and then the second print control related to the print job A is performed.

  Here, in order to distinguish between the paper discharged by the first printing control related to the print job A and the paper discharged by the first printing control related to the print job B, in the eighth embodiment, both papers are used. A slip sheet for discrimination is discharged between both sheets.

  FIG. 26 is a block diagram illustrating an embodiment of a printing system to which the eighth embodiment is applied.

  The printing system 300 illustrated in FIG. 26 interfaces a plurality of print instruction devices 311 and 312 that transmit a print job to the printing device 320 and a print job (print instruction information) including double-sided print instructions from the print instruction devices 311 and 312. The printing apparatus 320 includes a printing apparatus 320 that receives the print job 330 and executes double-sided printing based on the print job.

  Similar to the printing apparatus 20 shown in FIG. 1, the printing apparatus 320 has one or a plurality of paper trays for storing printing paper (not shown) and a manual feeding tray for manual printing, and automatically prints on both sides of the paper. An automatic double-sided printing function and a manual double-sided printing function for performing double-sided printing by two single-sided printings.

  A print job including a double-sided printing instruction from the printing instruction devices 311 and 312 may include a page with a designation of paper (size, paper quality, etc.) that cannot be automatically duplexed by the printing device 320. In this case, The printing apparatus 320 determines whether or not a sheet that cannot be automatically duplex printed is designated for each page of the print job. The double-sided printing function is used to perform double-sided printing on the first side and the second side, but the automatic double-sided printing function is used in the first printing for pages with paper designations that cannot be automatically double-sided. When printing is performed, only one side (first side) is printed, and page information necessary for printing on the other side (second side) that has not been printed is temporarily saved. Distribution selectively executes printing for the unprinted other surface (surface) (manual duplex printing) by using the print function based on.

  In order to realize the above functions, the printing apparatus 320 includes a user interface unit 321, a host interface unit 322, a print data generation unit 323, a duplex printing determination unit 324, an automatic duplex printing control unit 325, a manual duplex printing control unit 326, printing A data storage unit 327, a print page management unit 328, and a print job management unit 329 are provided.

  The user interface unit 321 performs interface processing such as an instruction from the user using an operation panel (not shown).

  The host interface unit 322 performs processing for receiving print data from the print instruction devices 311 and 312.

  The print data generation unit 323 analyzes print data from the print instruction devices 311 and 312, changes to intermediate data, and performs processing to generate a bitmap image from the intermediate data.

  The duplex printing determination unit 324 determines whether to perform automatic duplex printing at the first printing.

  The automatic double-sided printing control unit 325 controls execution of automatic double-sided printing in which printing is continuously performed on the second side of the printing paper after printing on the first side of the printing paper at the first printing.

  The manual double-sided printing control unit 326 controls execution of single-sided printing in the first printing, and controls execution of single-sided printing on an unprinted surface in the second printing.

  The print data storage unit 327 stores print job data for manual duplex printing in the second printing.

  The print page management unit 328 manages print status information of each page of the print job.

  The print job management unit 329 manages job information of print job data stored in the print data storage unit 327.

  FIG. 27 is a diagram illustrating an example of print data instructed to be printed from the print instruction devices 311 and 312 illustrated in FIG. 26, and FIG. 27A is a print job that is an example of a print job from the print instruction device 311. FIG. 27B illustrates a print job B that is an example of a print job from the print instruction apparatus 312.

  Here, in the print job A from the print instruction apparatus 311 shown in FIG. 27A, plain paper is instructed as paper for the first to fourth pages, and thick paper is used for the fifth and sixth pages. Have been instructed. Here, when the printing for the printing surface is instructed for this print data, automatic double-sided printing can be performed from the first page to the fourth page. However, since the fifth and sixth pages are instructed to use thick paper, Duplex printing is not possible.

  In addition, the print job B from the print instruction apparatus 312 shown in FIG. 27B is instructed to use thick paper as the first and second pages, and instruct to use plain paper as the third to sixth pages. Has been. Here, when printing for the front side is instructed for this print data, automatic duplex printing is not possible because the first and second pages are instructed to use thick paper, but the third to sixth pages are automatic. Double-sided printing is possible.

  FIG. 28 is a flowchart illustrating the printing process of the printing apparatus 320 according to the eighth embodiment.

  Description will be made assuming that print data relating to print job A from the print instruction apparatus 311 is first received, and subsequently print data relating to print job B from the print instruction apparatus 312 is received.

  The printing apparatus 320 starts the first printing (first printing control) by receiving the print data related to the print job A from the print instruction apparatus 211 by the host interface unit 322 of the printing apparatus 320 (step 2801). .

  First, it is checked whether the received print data has been instructed to be printed on both sides by the user interface unit 321 (step 2802). If there is no instruction to print on both sides (NO in step 2802), single-sided printing of all pages is executed. (Step 2803), the process is terminated.

  If there is an instruction for double-sided printing in step 2802 (YES in step 2802), the print data generation unit 323 generates print data in consideration of the print orientation of the front and back surfaces, and after generating the print data, the page From the page attributes such as the paper size and paper quality of the next page, the double-sided printing determination unit 324 determines whether the page can be automatically printed on both sides (step 2804).

  If it is determined that automatic duplex printing is possible (YES in step 2804), execution of automatic duplex printing is controlled by the automatic duplex printing control unit 285 (step 2805). The duplex printing information is stored in the print page management unit 328 (step 2806). For example, when the print data is print data corresponding to the print job A shown in FIG. 27A, automatic duplex printing information from the first page to the fourth page is stored in the print page management unit 328.

  On the other hand, if the page is determined not to be automatically duplexed in step 2804 (NO in step 2804), the first page, for example, the print data shown in FIG. Execution of printing (front side) is controlled by the manual double-sided printing control unit 326 (step 2807), and manual double-sided printing information such as information indicating that printing of the second side is not performed is stored in the print page management unit 329. (Step 2808), the print data of the second side, that is, the print data of the sixth page is stored in the print data storage unit 327 (Step 2809).

  This process is repeated until all pages are completed. When all pages are completed (YES in step 2810), the print page management unit 328 checks whether there is a page that cannot be automatically duplex printed (step 2811). If it is determined that there is no page for which automatic duplex printing is not possible (NO in step 2811), the process is terminated.

  If it is determined in step 2811 that there is a page that cannot be printed on both sides automatically (YES in step 2811), the first print control is terminated and the paper reset information for the second print control is set. A warning is given (step 2812). This paper resetting information warning is performed by displaying the paper resetting information to the user via the user interface unit 221 and giving a warning.

  Next, it is checked whether another job has been received (step 2813). Here, since print job B is received from print instruction apparatus 312 (YES in step 1813), print processing for another job, that is, print processing for print job B from print instruction apparatus 312 is executed.

  FIG. 29 is a flowchart showing a printing process of the other job shown in FIG.

  If it is determined in step 2813 that the print job B from the print instruction apparatus 312 which is another job is received (YES in step 1813), print data related to the print job B which is another job is received (step 2813). 2901), it is checked whether there is a waiting job (step 2902). Here, since the job related to the second printing of print job A is waiting (YES in step 2902), it is checked whether or not the slip sheet has been output (step 2903), and the slip sheet has been discharged. If there is not (NO in step 2903), the interleaving paper tray in which the interleaving paper is stored is searched (step 2904), and the interleaving paper is output from the searched interleaving paper tray (step 2905). The first print control related to the print job B is executed (step 2906).

  Here, the first print control in step 2906 related to the print job B from the print instruction apparatus 312 is performed in the same manner as the processing in steps 2801 to 2813 shown in FIG.

  Here, the slip sheet is a sheet discharged by the first print control related to the print job A from the print instruction apparatus 311 and a sheet discharged by the first print control related to the print job B from the print instruction apparatus 312. In step 2904, trays satisfying the following conditions are searched in order from each of the paper feed trays.

1) A tray in which papers of different sizes are set for both print job A and print job B 2) paper of a size different from that of print job A or print job B is set In step 2905, if a slip sheet tray can be selected by the above search, only one slip sheet is output from that tray, and the slip sheet output flag for print job A managed by the print job management unit 329 is turned ON. Change to Then, the first print control of the print job B is performed.

  FIG. 30 shows an output form of the paper discharged when the first print control of the print job A and the print job B is completed when the print job is the print job A and the print job A shown in FIG. FIG.

  In this case, the first page to the fourth page of the print job A are printed on both sides of the first and second first sheets and the second sheet and discharged, and the fifth page is a third sheet of thick paper. Printed on the front side of the paper, the back side of the third paper is unprinted and ejected as white paper, and then the paper ejected by the first printing control relating to print job A and the first time relating to print job B A slip sheet for distinguishing the sheet from the discharged sheet is discharged, and the first page of the print job B is printed on the surface of the first sheet of thick paper on the first sheet. Since the back side of the paper is not printed, it is discharged as white paper, and the third to sixth pages are printed on both the second and third sheets of the second and third sheets and discharged.

  When the first print control of the print job B is completed, the slip sheet output flag of the print job B is set to OFF and registered in the print job management unit 329, and then the process shifts to a standby state for the second print control of the print job B. In this case, both the print job A and the print job B are in the standby state of the second print control, but in this embodiment, it seems that there is a right to be preferentially released from the print job B that has been in the standby state later. Therefore, it is the print job B that allows the second print control.

  Returning to the flowchart of FIG. 28, it is checked in step 2815 whether the paper for the second printing control has been reset.

  Here, when the paper relating to the print job B is set on the tray (YES in step 2815), the second print control is started.

  In the second printing control, printing is performed based on the automatically duplexed and manually duplexed pages related to the print job B managed by the print page management unit 228 and their discharge order information.

  That is, if it is determined in step 2816 that the page to be printed has been automatically duplexed (YES in step 2816), the paper feed is performed so that the paper is drawn from the tray without being printed, and discharged to the output tray as it is. Perform (step 2817).

  On the other hand, if it is determined in step 2816 that the page to be printed is printed only on the first side (NO in step 2816), the corresponding print data is extracted from the print data storage unit 327, and the second side, in this case Controls execution of printing of the second page (second side printing) on the first sheet (step 2818). This operation is performed for all pages, and if it is determined in step 2819 that all pages have been completed (YES in step 2819), this process ends.

  In the eighth embodiment, in order to distinguish between the paper discharged by the first print control related to the print job A and the paper discharged by the first print control related to the print job B, the two papers are distinguished. In the ninth embodiment, instead of the above-mentioned interleaving paper, a predetermined colored paper is ejected by the first printing control related to the print job A. And the sheet discharged by the first printing control related to the print job B. Other configurations are the same except for the print processing of another job in FIG. 29 of the eighth embodiment.

  FIG. 31 is a flowchart illustrating another job printing process corresponding to FIG. 29 according to the ninth embodiment.

  If it is determined in step 2813 of FIG. 28 that print job B from print instruction apparatus 312 which is another job is received (YES in step 1813), print data related to print job B which is another job is received. (Step 3101), it is checked whether there is a waiting job (Step 3102). Here, since the job related to the second printing of print job A is waiting (YES in step 3102), it is checked whether or not colored paper has been output (step 3103), and the colored paper has not been discharged. (NO in step 3103), the colored paper is output from the specific tray in which the colored paper is stored (step 3104), and the first print control relating to the print job B from the print instruction apparatus 312 is executed (step 3105).

  Here, the first print control in step 3105 related to the print job B from the print instruction apparatus 312 is performed in the same manner as the processes in steps 2801 to 2813 shown in FIG.

  Here, the colored paper is a sheet discharged by the first print control related to the print job A from the print instruction apparatus 311 and a sheet discharged by the first print control related to the print job B from the print instruction apparatus 312. In step 3104, colored paper is output from a specific tray in which colored paper is stored from among the paper feed trays.

  FIG. 32 shows the output form of the paper discharged when the first print control of print job A and print job B is completed when the print jobs are print job A and print job A shown in FIG. FIG.

  In this case, the first page to the fourth page of the print job A are printed on both sides of the first and second first sheets and the second sheet and discharged, and the fifth page is a third sheet of thick paper. Printed on the front side of the paper, the back side of the third paper is unprinted and ejected as white paper, and then the paper ejected by the first printing control relating to print job A and the first time relating to print job B Colored paper for distinguishing it from the discharged paper is discharged, and the first page of the print job B is further printed on the surface of the first sheet of thick paper. The back side is unprinted and is discharged as white paper, and the third to sixth pages are printed on both sides of the second and third second and third sheets and discharged.

  In the eighth embodiment, in order to distinguish between the paper discharged by the first print control related to the print job A and the paper discharged by the first print control related to the print job B, the two papers are distinguished. However, in the tenth embodiment, a tray in which sheets of the same sheet size and only in different directions are set in the sheet feeding tray of the printing apparatus 320 is used. By using the paper in the tray, the direction of the paper ejected by the first printing control for print job A and the direction of the paper ejected by the first printing control for print job B are made different. Thus, the paper discharged by the first printing control related to the print job A and the paper discharged by the first printing control related to the print job B are distinguished. It is configured. Other configurations are the same except for the print processing of another job in FIG. 29 of the eighth embodiment.

  FIG. 33 is a flowchart illustrating another job printing process corresponding to FIG. 29 according to the tenth embodiment.

  If it is determined in step 2813 of FIG. 28 that print job B from print instruction apparatus 312 which is another job is received (YES in step 1813), print data related to print job B which is another job is received. Then (step 3301), it is checked whether there is a waiting job (step 3302). Here, since the job related to the second printing of print job A is waiting (YES in step 3302), it is checked whether the same paper size as the waiting job is next (step 3303). Since the paper size is the same as that of the middle job (NO in step 3303), a tray in a different direction is selected (step 3304), and the first print control related to the print job B from the print instruction apparatus 312 is executed (step 3305). ).

  Here, the first print control in step 3305 related to the print job B from the print instruction apparatus 312 is performed in the same manner as the processes in steps 2801 to 2813 shown in FIG.

  Here, the tray is selected in step 3304. For example, if the sheet discharged by the first print control related to the print job A from the print instruction apparatus 311 is in the vertical direction (SEF), the print instruction apparatus 312 is selected. In the first print control related to the print job B, the tray is selected so that the paper in the horizontal direction (LEF) is discharged.

  FIG. 34 shows the output form of the paper discharged when the first print control of print job A and print job B is completed when the print jobs are print job A and print job A shown in FIG. FIG.

  In this case, the first page to the fourth page of the print job A are printed on both sides of the first and second longitudinal first and second sheets and discharged, and the fifth page is thick paper. Printed on the front surface of the third paper in the vertical direction, the back surface of the third paper is unprinted and discharged as white paper, and the first page of the print job B is printed on the first paper in the horizontal direction of the thick paper. Printed on the front side, the back side of the first sheet is unprinted and discharged as white paper, and the third and sixth pages are the second and third lateral second and third sheets. Are printed on both sides and discharged.

  In the eighth embodiment, in order to distinguish between the paper discharged by the first print control related to the print job A and the paper discharged by the first print control related to the print job B, the two papers are distinguished. In the eleventh embodiment, an offset function that allows the printing apparatus 320 to discharge the paper by shifting the output position of the paper for each print job is configured. , The discharge position of the paper discharged by the first print control related to the print job A and the discharge position of the paper discharged by the first print control related to the print job B are made different from each other. It is configured to distinguish between the paper discharged by the first printing control related to the job A and the paper discharged by the first printing control related to the print job B. Other configurations are the same except for the print processing of another job in FIG. 29 of the eighth embodiment.

  FIG. 35 is a flowchart illustrating another job printing process corresponding to FIG. 29 according to the eleventh embodiment.

  If it is determined in step 2813 of FIG. 28 that print job B from print instruction apparatus 312 which is another job is received (YES in step 1813), print data related to print job B which is another job is received. (Step 3501), it is checked whether there is a waiting job (Step 3502). Here, since the job related to the second printing of print job A is waiting (YES in step 3502), the paper offset position is switched (step 3503), and the first time related to print job B from print instructing device 312. Print control is executed (step 3504).

  Here, the first print control in step 3305 related to the print job B from the print instruction apparatus 312 is performed in the same manner as the processes in steps 2801 to 2813 shown in FIG.

  Here, in the switching of the paper offset position in step 3503 and the first print control related to the print job B from the print instruction apparatus 312, the paper is discharged by the first print control related to the print job A from the print instruction apparatus 311. The paper is ejected in different positions.

  FIG. 36 shows the output form of the paper discharged when the first print control of print job A and print job B is completed when the print jobs are print job A and print job A shown in FIG. FIG.

  In this case, the first page to the fourth page of the print job A are printed on both sides of the first and second first sheets and the second sheet and discharged to the first position. Printed on the front side of the third sheet of thick paper, the back side of the third sheet is unprinted and is ejected to the first position in the same manner as white paper, and the first page of print job B is printed on the first side of the thick paper. Printed on the front side of the paper, the back side of the first paper is unprinted and ejected to the second position with white paper, the third to sixth pages are the second and third second papers and Both sides are printed on the third sheet and discharged to the second position.

  FIG. 37 is a block diagram illustrating an embodiment of a printing system to which the twelfth embodiment is applied.

  A printing system 400 shown in FIG. 37 is a network that prints print jobs (print instruction information) including a plurality of print instruction devices 411 and 412 that transmit print jobs to the print device 420 and duplex print instructions from the print instruction devices 411 and 412. The printing apparatus 420 includes the printing apparatus 420 that receives the print job 440 and executes double-sided printing based on the print job.

  Note that the connection between the print instruction apparatus 411 and the print apparatus 420, and the print instruction apparatus 421 and the print apparatus 420 are not via the network 440, but may be a local IF (parallel port, USB port, etc.) capable of bidirectional communication. It doesn't matter.

  Similar to the printing apparatus 20 shown in FIG. 1, the printing apparatus 420 has one or a plurality of paper trays for storing printing paper (not shown) and a manual feeding tray for manual printing, and automatically prints on both sides of the paper. An automatic double-sided printing function and a manual double-sided printing function for performing double-sided printing by two single-sided printings.

  A print job including a double-sided print instruction from the print instruction devices 411 and 412 may include a page with a designation of paper (size, paper quality, etc.) that cannot be automatically double-sided printed by the printing device 420. In this case, The printing apparatus 420 determines whether or not a sheet that cannot be automatically duplex printed is designated for each page of the print job. The double-sided printing function is used to perform double-sided printing on the first side and the second side, but the automatic double-sided printing function is used in the first printing for pages with paper designations that cannot be automatically double-sided. When printing is performed, only one side (first side) is printed, and page information necessary for printing on the other side (second side) that has not been printed is temporarily saved. Distribution selectively executes printing for the unprinted other surface (surface) (manual duplex printing) by using the print function based on.

  In order to realize the above functions, the printing apparatus 420 includes a user interface unit 421, a host interface unit 422, a print language processing unit 423, a print image generation unit 424, a print output unit 425, an automatic duplex printing control unit 426, and duplex printing determination. 427, manual duplex printing control unit 428, print data storage unit 429, storage data management unit 430, and storage data selection unit 431.

  The user interface unit 421 performs interface processing such as an instruction from the user using an operation panel (not shown).

  The host interface unit 422 performs processing for receiving print data from the print instruction devices 411 and 412.

  The print language processing unit 423 analyzes the print data and performs a process of changing to intermediate data for generating a bitmap image. The print language processing unit 423 is included in the print data generation unit 323 in the configuration of FIG.

  The print image generation unit 424 performs processing for generating a bitmap image from the intermediate data. The print image generation unit 424 and the configuration of FIG. 26 are included in the print data generation unit 323.

  The print output unit 425 prints out the bitmap image generated by the print image generation unit 424.

  The automatic double-sided printing control unit 426 controls execution of automatic double-sided printing in which printing is continuously performed on the second side of the printing paper after printing on the first side of the printing paper at the first printing.

  The duplex printing determination unit 427 determines whether or not to perform automatic duplex printing at the first printing.

  The manual double-sided printing control unit 429 controls execution of single-sided printing in the first printing, and controls execution of single-sided printing on the unprinted side in the second printing.

  The print data storage unit 429 stores print job data for manual duplex printing in the second printing.

  The accumulated data management unit 430 manages job information of print job data accumulated in the print data accumulation unit 429. The accumulated data management unit 430 corresponds to the print job management unit 329 in FIG.

  The accumulated data selection unit 431 selects manual duplex job data accumulated in the print data accumulation unit 429 in order to execute printing of the second side of manual duplex printing.

  FIG. 38 is a flowchart illustrating the first printing process of the printing apparatus 420 according to the twelfth embodiment. Hereinafter, in the first printing (duplex printing by the automatic duplex printing function and the first printing process by the manual duplex printing), the paper set in the tray is used and the second printing (the first printing by the manual duplex printing is performed). In the two-side printing process), a case where the paper set on the manual feed tray is used and the paper is discharged face down will be described.

  The printing apparatus 420 receives print data from the print instruction apparatuses 411 and 412 at the host interface unit 422, analyzes the print data at the print language processing unit 423, generates intermediate data, and generates an intermediate data at the print image generation unit 424. A bitmap image is generated from the data, and the print output unit 425 performs print output.

  At this time, when the double-sided printing process is instructed for the print data (step 3801), the double-sided printing determination unit 427 determines whether or not automatic double-sided printing is possible for each page (step 3802).

  If automatic duplex printing is possible (YES in step 3802), automatic duplex printing is executed by the automatic duplex printing unit 426 (step 3806).

  If the duplex printing determination unit 427 determines that automatic duplexing is not possible (NO in step 3802), the accumulated data management unit 430 stores the page information of the page to be printed on the second side of manual duplex printing as manual duplex printing data. And the print data are linked and stored in the print data storage unit 429 (step 3803).

  Next, it is checked whether the back side has the same paper size and the same paper quality as the previous page (step 3804). If the back side has the same paper size and the same paper quality (YES in step 3804), the back side plate surface is rotated by 180 degrees. Only printing is performed (step 3805). If the back side is the same paper size as the previous page and does not have the same paper quality, that is, if the front side and the back side of double-sided printing specify a different paper size or paper quality (NO in step 3804), the saved page information Are read out and single-sided printing of the front side is executed (step 3807).

  In step 3808, it is checked whether all pages are finished. If all pages are not finished (NO in step 3808), the process returns to step 3802 to repeat the above processing.

  If it is determined in step 3808 that all pages have been completed (YES in step 3808), it is checked whether there is a page for manual duplex printing (step 3809). If it is determined that there is no page for manual duplex printing (in step 3809). NO), this process is terminated, but if it is determined that there is a page for manual duplex printing (YSE in step 3809), then it is checked whether the process is continued by manual duplex printing (step 3810). If the process is to be continued, the process waits for manual double-sided printing (step 3811) and proceeds to the process of FIG.

  If it is determined in step 3810 that the manual duplex printing is not continued (NO in step 3810), job identification information for manual duplex printing and manual duplex printing data are stored (step 3812), and the process is terminated.

  Note that when all pages have been processed, page data that needs to be printed on the second side of manual duplex printing is stored in the print data storage unit 429, and the second side printing process of manual duplex printing is performed. If the print data storage unit 430 does not continue the process, the print data storage unit 430 links the job identification information of the print data and the stored print data of the second side of manual duplex printing as one job information. Save to 429.

  The job identification information here uses unique identification information (user ID, print job name, job ID) added to the print data, but when the unique identification information is not added to the print data, Unique identification information determined by the printing apparatus 420 based on the reception time, printing time, printing order, and data storage order may be used.

  Whether or not to continue the second-side printing process of manual duplex printing as it is may be set in advance from the user interface unit 421, or may be determined by adding information on whether or not to continue to print data. Good.

  If the second-side printing process of manual duplex printing is not performed continuously, the printing process from the print instruction devices 411 and 412 can be performed continuously. The print processing at this time may be another print from the print instruction devices 411 and 412. When the printing from the print instruction devices 411 and 412 is the same as the above-described printing process when double-sided printing is designated in the same way and automatic double-sided printing and manual double-sided printing coexist. When the second-side printing process of manual duplex printing is continued, the user interface unit 422 displays a message for requesting resetting the target printing paper (automatic duplex printing, manual duplex first-side printed paper). Then, execution of the second side printing of manual duplex printing is awaited.

  FIG. 39 is a flowchart illustrating the second printing process of the printing apparatus 420 according to the twelfth embodiment.

  A user who performs second-side printing of manual duplex printing with the printing apparatus 420 selects a print job for second-side printing of manual duplex printing to be executed with the accumulated data selection unit 431 through the user interface unit 421 (step 3901). ), The target printing paper (automatic duplex printing, manual duplex first-side printed paper) is set on the manual feed tray of the printing apparatus 420.

  When the second printing process of manual duplex printing is continued as it is in the first printing process shown in FIG. 38 (YES in step 3810), it remains in the state of waiting for the execution of second printing of manual duplex printing. The target printing paper (automatic duplex printing, manual duplex first-surface printed paper) is set on the manual feed tray of the printing apparatus 420.

  After completing the setting of the printing paper (YES in Step 3902), the user instructs the printing apparatus 420 to execute the manual double-sided second side printing from the user interface unit 421, and starts the manual double-sided printing (Step 3903).

  The printing apparatus 420 reads the print information of the print job instructed to be executed from the accumulated data management unit 430, and reads the specified print page information from the print data accumulation unit 429 (step 3904). Then, the page information stored in the print data storage unit 429 is compared with the current page information (step 3905). Is it necessary to print the front side of the sheet? It is determined whether it is necessary to print the second side of manual duplex printing (step 3906).

  Here, in the case of a sheet that is not a printing target on the second side of manual duplex printing (NO in step 3906), no print processing is performed, the current page information is incremented, and only the sheet discharge is executed. In this case, the paper is discharged through a double-sided path.

  In the case of a sheet to be printed on the second side of manual duplex printing (YES in step 3906), the print data of the second side of manual duplex printing stored in the print data storage unit 429 is read out, and the sheet information corresponding to the sheet information is read. The second surface (front surface) is printed (step 3907).

  When all printing of the designated print job is completed (YES in step 3909), it is checked whether the job is set to delete (step 3910). If the job is set to delete (YES in step 3910), the printing apparatus In step 420, information on the completed print job is deleted from the print data storage unit 429. The selection of the second side printing of the manual duplex printing may be printing from either of the print instruction devices 411 and 412. Further, in the twelfth embodiment, the configuration of the two print instruction devices 411 and 412 is shown, but the configuration may be made up of two or more print instruction devices.

  40 is a diagram illustrating an example of a data structure of job information stored in the print data storage unit 449 illustrated in FIG.

  Here, a print job including a double-sided printing instruction is described in a page description language (for example, PDL (Page Description Language)), and the total number of pages is 28 pages, the third page and the fourth page are other paper information. The paper size of pages 9 and 10 is the same as the page size (A4) of other pages, but automatic duplex printing is not possible. The case where it is an improper cardboard is shown.

  In this case, the job information stored in the print data storage unit 249 is the second print on the PDL header information describing the print job, and printing on the other unprinted surface (front surface) using the manual print function. The job information 4001 includes a pointer to the manual duplex printing page to be performed, and page information 4002 and 4003 used in the second printing referred to by the pointer to the manual duplex printing page.

  That is, the job information 4001 in this case includes user identification information of the print job, file name, total number of pages (28), manual duplex printing required number (2), layout information (duplex), and pointer to the manual duplex printing page. (Page information 4002 for the third page), a pointer to the manual duplex printing page (page information 4003 for the ninth page), and job data are described.

  The page information 4002 includes a pointer to the next page information (page information 203), a pointer to the previous page information, a page number (3) for manual duplex printing, a paper size (undefined size), and paper quality (plain paper). The expanded page data of the third page is described.

  The page information 203 includes a pointer to the next page information, a pointer to the previous page information (page information 202), a page number (9) for manual duplex printing, paper size (A4), paper quality (thick paper), 9 pages. The expanded page data of the eyes is described.

  FIG. 41 is a sequence chart illustrating the first printing control in the twelfth embodiment.

  In FIG. 41, the double-sided print data with the identification information “AAA” is first transmitted from the print instruction apparatus 411 to the printing apparatus 420, and then the double-sided print data with the identification information “BBB” is transmitted from the print instruction apparatus 412. Shows the case.

  When the printing apparatus 420 receives the duplex printing data designated by duplex printing with the identification number “AAA” transmitted from the printing instruction apparatus 411, the printing apparatus 420 executes duplex printing (first printing) (Step 4101). For the second printing, automatic duplex printing is executed for pages that can be printed automatically, and manual duplex printing is used for pages that cannot be printed automatically due to the specified paper quality and size. This is done by executing printing on one side.

  Then, for pages that cannot be automatically printed on both sides, manual duplex printing data for the second surface with an identification number “AAA” that is not printed in the first printing is stored (step 4102), and manual duplex printing is performed. When printing of all pages except for the second side is completed (step 4103), a manual double-sided printing execution notification with the identification number “AAA” is sent to the print instruction apparatus 411.

  Similarly, when receiving the double-sided print data designated by the double-sided printing with the identification number “BBB” transmitted from the print instructing device 412, the printing apparatus 420 executes double-sided printing (first printing) (step 4104). In this first printing, automatic duplex printing is performed for pages that can be automatically duplexed, and manual duplex is performed for pages that cannot be automatically duplexed due to the specified paper quality and size. This is performed by executing printing of the first surface by printing.

  For pages for which automatic duplex printing is not possible, manual duplex printing data for the second surface with an identification number “BBB” that is not printed in the first printing is stored (step 4105), and manual duplex printing is performed. When the printing of all pages except for the second side is completed (step 4106), a manual double-sided printing execution notification with the identification number “AAA” is sent to the print instructing device 411.

  FIG. 42 is a sequence chart illustrating the second print control by the user of the print instruction apparatus 411 according to the twelfth embodiment.

  The second print control by the user of the print instruction apparatus 411 shown in FIG. 42 is performed by the manual data double-sided print data (first AAA) with the identification number “AAA” stored in the print data storage unit 428 by the storage data selection unit 431. 2 side) is selected (step 4201), and the user of the print instruction apparatus 411 starts the automatic duplex printing and manual duplex double-sided first-sheet-printed paper set on the manual feed tray (step 4202) (step 4202). 4203).

  In the second side printing of the manual duplex printing with the identification number “AAA”, the automatic duplex printing paper is ejected as it is through the duplex printing path without being printed, and the manual duplex first side printing is completed. For the paper, the second side is printed using the manual double-sided printing data (second side) with the identification number “AAA” read from the print data storage unit 428 (step 4204).

  This process is repeated until the printing of all pages of the job with the identification number “AAA” is completed. When the printing of all pages is completed (step 4205), the process is terminated.

  FIG. 43 is a sequence chart illustrating the second print control by the user of the print instruction apparatus 412 according to the twelfth embodiment.

  The second print control by the user of the print instruction apparatus 412 shown in FIG. 43 is performed by the manual data double-side print data (the first double-sided print data with the identification number “BBB” stored in the print data storage unit 428 by the storage data selection unit 431). (2 sides) is selected (step 4301), and the user of the print instruction apparatus 411 starts the automatic duplex printing and manual duplex double-sided first-sheet-printed paper set on the manual feed tray (step 4302) (step 4302). 4303).

  In the second-side printing of manual duplex printing with the identification number “BBB”, the paper that has been printed on the automatic duplex printing is directly discharged via the duplex printing path without printing, and the manual duplex first-side printing is completed. For the paper, the second side is printed using the manual double-sided print data (second side) with the identification number “BBB” read from the print data storage unit 428 (step 4304).

  This process is repeated until printing of all pages of the job with the identification number “AAA” is completed. When printing of all pages is completed (step 4305), the process is terminated.

  FIG. 44 is a block diagram illustrating an embodiment of a printing system to which the embodiment 13 is applied.

  44 prints a print job (print instruction information) including a plurality of print instruction devices 511 and 512 that transmit a print job to the print device 520 and double-sided print instructions from the print instruction devices 511 and 512. The printing apparatus 520 receives the print job via the print job 540 and executes double-sided printing based on the print job.

  Note that the connection between the print instruction device 511 and the print device 520, and the print instruction device 521 and the print device 520 are not via the network 440, but may be a local IF (parallel port, USB port, etc.) capable of bidirectional communication. It doesn't matter.

  Similar to the printing apparatus 20 shown in FIG. 1, the printing apparatus 520 has one or a plurality of paper trays for storing printing paper (not shown) and a manual feeding tray for manual printing, and automatically prints on both sides of the paper. An automatic double-sided printing function and a manual double-sided printing function for performing double-sided printing by two single-sided printings.

  A print job including a double-sided print instruction from the print instruction devices 511 and 512 may include a page with a designation of paper (size, paper quality, etc.) that cannot be automatically duplexed by the printing device 520. The printing apparatus 520 determines whether or not a sheet that cannot be automatically printed on both sides is designated for each page of the print job. The double-sided printing function is used to perform double-sided printing on the first side and the second side, but the automatic double-sided printing function is used in the first printing for pages with paper designations that cannot be automatically double-sided. When printing is performed, only one side (first side) is printed, and page information necessary for printing on the other side (second side) that has not been printed is temporarily saved. Distribution selectively executes printing for the unprinted other surface (surface) (manual duplex printing) by using the print function based on.

  In order to realize the above functions, the printing apparatus 520 includes a user interface unit 521, a host interface unit 522, a print language processing unit 523, a print image generation unit 524, a print output unit, as in the printing system 400 illustrated in FIG. 425, an automatic duplex printing control unit 526, a duplex printing determination unit 527, a manual duplex printing control unit 528, a print data accumulation unit 529, an accumulation data management unit 530, and an accumulation data selection unit 531. Includes an ID printing unit 532.

  The user interface unit 521 to the stored data selection unit 531 are the same as the user interface unit 421 to the stored data selection unit 431 of the printing system 400 shown in FIG.

  That is, the user interface unit 521 performs interface processing such as instructions from the user using an operation panel (not shown).

  The host interface unit 522 performs processing for receiving print data from the print instruction apparatuses 511 and 512.

  The print language processing unit 523 analyzes the print data and performs a process of changing to intermediate data for generating a bitmap image.

  The print image generation unit 524 performs processing for generating a bitmap image from the intermediate data.

  The print output unit 525 prints out the bitmap image generated by the print image generation unit 524.

  The automatic double-sided printing control unit 526 controls execution of automatic double-sided printing in which printing is continuously performed on the second side of the printing paper after printing on the first side of the printing paper at the first printing.

  The duplex printing determination unit 527 determines whether to perform automatic duplex printing at the first printing.

  The manual double-sided printing control unit 529 controls the execution of single-sided printing in the first printing, and controls the execution of single-sided printing on the unprinted side in the second printing.

  The print data storage unit 529 stores print job data for manual duplex printing in the second printing.

  The accumulated data management unit 530 manages job information of print job data accumulated in the print data accumulation unit 429.

  The accumulated data selection unit 531 selects manual duplex job data accumulated in the print data accumulation unit 529 in order to execute printing of the second side of manual duplex printing.

  In the second printing, the ID printing unit 532 prints the print job identification information on the printing surface in order to identify the printing result that requires the printing of the second side of manual duplex printing.

  FIG. 45 is a flowchart illustrating the first printing process of the printing apparatus 520 according to the thirteenth embodiment. Hereinafter, in the first printing (duplex printing by the automatic duplex printing function and the first printing process by the manual duplex printing), the paper set in the tray is used and the second printing (the first printing by the manual duplex printing is performed). In the two-side printing process), a case where the paper set on the manual feed tray is used and the paper is discharged face down will be described.

  The printing apparatus 520 receives print data from the print instruction apparatuses 511 and 512 by the host interface unit 522, analyzes the print data by the print language processing unit 523, generates intermediate data, and generates an intermediate data by the print image generation unit 524. A bitmap image is generated from the data, and the print output unit 525 performs print output.

  At this time, if the double-sided printing process is instructed for the print data (step 4501), the double-sided printing determination unit 527 determines whether or not automatic double-sided printing is possible for each page (step 4502).

  If automatic duplex printing is possible (YES in step 4502), automatic duplex printing is executed by the automatic duplex printing unit 526 (step 4506).

  If the duplex printing determination unit 527 determines that automatic duplexing is not possible (NO in step 4502), page information of a page to be printed on the second side of manual duplex printing by the accumulated data management unit 530 as manual duplex printing data; And the print data are linked and stored in the print data storage unit 529 (step 4503).

  Next, it is checked whether the back side has the same paper size and the same paper quality as the previous page (step 4504). If the back side has the same paper size and the same paper quality (YES in step 4504), the back side plate is rotated 180 degrees and the back side is rotated. Only printing is performed (step 4505). If the back side is the same paper size as the previous page and does not have the same paper quality, that is, if the front side and the back side of double-sided printing specify a different paper size or paper quality (NO in step 4504), the saved page information Are read out and single-sided printing of the surface is executed (step 4507).

  Then, when printing the first side by the duplex printing by the automatic duplex printing and by the manual duplex printing, the ID printing unit 532 causes the identification information of the job, that is, at the upper left end outside the printing range of the printing surface of the printing surface, that is, The user identification information (user ID) and file name are printed (step 4508).

  In step 4509, it is checked whether all pages are finished. If all pages are not finished (NO in step 4509), the process returns to step 4502 to repeat the above processing.

  If it is determined in step 4509 that all pages have been completed (YES in step 4509), it is checked whether there is a page for manual duplex printing (step 4510). If it is determined that there is no page for manual duplex printing (in step 4510). NO), this process ends, but if it is determined that there is a page for manual duplex printing (YSE in step 4510), then it is checked whether manual duplex printing is continued (step 4511), and manual duplex printing is performed. If the process is to be continued, the process waits for manual double-sided printing (step 4512) and proceeds to the process of FIG.

  If it is determined in step 4511 that the manual duplex printing is not continued (NO in step 4511), the job identification information and manual duplex printing data for manual duplex printing are stored (step 4513), and the process ends.

  FIG. 46 is a flowchart illustrating the second printing process of the printing apparatus 520 according to the thirteenth embodiment.

  The user who performs the second side printing of the manual duplex printing by the printing apparatus 520 selects the print job of the second side printing of the manual duplex printing to be executed by the accumulated data selection unit 531 through the user interface unit 521 (step 3901). ), And the target printing paper (automatic duplex printing, manual duplex first-side printed paper) is set in the manual feed tray of the printing apparatus 520.

  When the second printing process of manual duplex printing is continued as it is in the first printing process shown in FIG. 44 (YES in step 4511), it remains in the state of waiting for execution of the second printing of manual duplex printing. The target printing paper (automatic duplex printing, manual duplex first-surface printed paper) is set on the manual feed tray of the printing apparatus 520.

  After completing the setting of the printing paper (YES in Step 4602), the user instructs the printing apparatus 520 to execute the manual double-sided second side printing from the user interface unit 521, and starts the manual double-sided printing (Step 4603).

  The printing apparatus 520 reads the print information of the print job instructed to be executed from the accumulated data management unit 530, and reads the specified print page information from the print data accumulation unit 529 (step 4604). Then, the page information stored in the print data storage unit 529 is compared with the current page information (step 4605), and printing of the front side of the paper is necessary, that is, the manual duplex printing control unit 528 applies the printing to the printing paper. It is determined whether the second side of manual duplex printing needs to be printed (step 4606).

  Here, in the case of a sheet that is not a printing target on the second side of manual duplex printing (NO in step 4606), no print processing is performed, the current page information is incremented, and only the sheet discharge is executed. In this case, the paper is discharged through a double-sided path.

  In the case of a sheet to be printed on the second side of manual duplex printing (YES in step 4606), the print data of the second side of manual duplex printing stored in the print data storage unit 529 is read, and according to the sheet information The second surface (front surface) is printed (step 4607).

  In the second side printing of manual duplex printing, the ID printing unit 532 causes the ID information of this job, that is, the user's identification information, ie, the user, to be printed outside the printing range of the printing side of the printing side, for example, at the upper left end, as in Step 4508 of FIG. The identification information (user ID) and file name are printed (step 4609).

  When all printing of the designated print job is completed (YES in step 4610), it is checked whether or not job deletion is set (step 4611). If it is set to job deletion (YES in step 4611), the printing apparatus is checked. In step S <b> 520, information on the completed print job is deleted from the print data storage unit 529. The selection of the second side printing for manual duplex printing may be printing from either of the print instruction devices 511 and 512. Further, in the thirteenth embodiment, the configuration of the two print instruction devices 511 and 512 is shown, but it may be composed of two or more print instruction devices.

  In the thirteenth embodiment, whether or not to simultaneously print unique identification information for identifying a print job outside the print range of the print surface may be selected by the user interface unit 521 in advance. You may specify with.

  Further, as job identification information, a combination of a user ID and a file name is used. However, if other job identification information is added, the information may be used. If the print data does not include information for identifying a print job, unique identification information determined based on the reception time, print time, print order, and data storage order in the printing apparatus 520 may be used. .

  FIG. 47 is a diagram illustrating an example of the print job requested by the user from the print instruction devices 511 and 512 and manual duplex print job information stored in the print data storage unit 529.

  Here, the print job requested by the user has the user ID “12345”, the file name “abcdef”, the duplex printing designation “present”, the total number of pages “6 pages”, and the paper size. “A4” indicates that the paper quality is 1-2, 5-6 pages are “plain paper”, and 3-4 pages are “thick paper”.

  In this case, pages 1-2 and 5-6 are “plain paper” because the paper quality is “plain paper”, so automatic duplex printing is possible, but pages 3-4 are “thick paper” because the paper quality is “thick paper”. Can not.

  Therefore, the print data storage unit 529 stores manual duplex printing job information having a data structure of user ID: 12345, file name: abcdef → page number: 3, paper quality: thick paper → page data.

  FIG. 48 is a diagram illustrating a first print example when the print job requested by the user and the manual duplex print job information stored in the print data storage unit 529 are those illustrated in FIG.

  FIG. 48A shows the printing state of the first sheet of the first sheet in the first printing, and the page data “A” of the first page is displayed on the front surface (first surface) of the first sheet. ”Is printed on the back side (second side) by page data“ B ”of the second page by automatic double-sided printing, and the user ID / file name“ 12345 / abcdef ”is printed on the upper left corner of the first side and the second side. "Is printed.

  FIG. 48B shows the printing status of the second sheet of the second sheet in the first printing, and the fourth page is on the front surface (first surface) of the second sheet (thick paper). The data “D” is printed with the user ID / file name “12345 / abcdef” rotated 180 degrees by manual duplex printing at the upper left end.

  FIG. 48C shows the printing status of the third sheet of the third sheet in the first printing, and the page data “E” of the fifth page is displayed on the front surface (first surface) of the third sheet. ”Is printed on the back side (second side) of the page data“ F ”of the sixth page by automatic duplex printing, and the user ID / file name“ 12345 / abcdef ”is printed on the upper left corner of the first side and the second side. "Is printed.

  FIG. 49 is a diagram showing the discharge order at the end of the first printing of the first to third sheets printed as shown in FIG.

  Here, since the paper is output by face down, the first paper, the second paper, and the third paper are discharged in this order with the second side up.

  That is, as shown in FIG. 49, first page data “A” of the first page is printed on the first side and second page data “B” of the second page is printed on the second side. The second page is discharged with the second side facing up, and then the page data “D” of the fourth page is printed by rotating 180 degrees on the first side, and the second side is a second sheet of blank paper (thick paper). Is discharged with the second side up. Next, the page data “E” of the fifth page is printed on the first side, and the page data “F” of the sixth page is printed on the second side. 3 sheets are discharged with the second side up.

  The first to third sheets discharged as shown in FIG. 49 are collectively set on the manual feed tray.

  FIG. 50 is a diagram illustrating the feeding order of the sheets set on the manual feed tray.

  Here, the first sheet, the second sheet, and the third sheet are fed with the first side facing up.

  That is, as shown in FIG. 50, the first page on which the first page data “A” is printed on the first side and the second page data “B” is printed on the second side is first printed. Paper is fed with the first side facing up, then the page data “D” of the fourth page is printed on the first side by rotating 180 degrees, and the second side is a second sheet of white paper (thick paper) ) Is fed with the first side up, then the page data “E” of the fifth page is printed on the first side, and the page data “F” of the sixth page is printed on the second side. A third sheet is fed with the first side up.

  FIG. 51 is a diagram illustrating a second print example when the print job requested by the user and the manual duplex print job information stored in the print data storage unit 529 are those illustrated in FIG.

  In the first sheet shown in FIG. 51A, the first page of page data “A” is already printed on the first side and the second page of page data “B” is already printed on the second side. Therefore, the first sheet is directly rotated through a sheet conveyance path for automatic duplex printing and discharged.

  In the second sheet shown in FIG. 51 (b), the page data “D” of the fourth page is printed on the first side in the first printing, but the second side is blank. On the second side, the page data “B” of the third page stored in the print data storage unit 529 is rotated by 180 degrees and printed. In the third sheet shown in FIG. 51C, the page data “E” of the fifth page is already printed on the first side and the page data “F” of the sixth page is already printed on the second side in the first printing. Therefore, the third sheet is directly rotated through a sheet conveyance path for automatic duplex printing and discharged.

  FIG. 52 is a diagram showing the discharge order at the end of the second printing of the first to third sheets printed as shown in FIG.

  That is, as shown in FIG. 52, the first paper on which the first page data “A” is printed on the first side and the second page data “B” is printed on the second side is first printed. The second page is rotated 180 degrees and discharged, and then the page data “D” of the fourth page is printed by rotating 180 degrees on the first side and the fourth page is printed on the second side. The second paper (thick paper) printed by rotating the page data “D” by 180 degrees is discharged with the second side up, and then the page data “E” of the fifth page on the first side. Is printed, and the third sheet on which the page data “F” of the sixth page is printed on the second side is rotated 180 degrees with the second side up and discharged.

  Although the above is an example of typical embodiment of this invention, this invention is not limited to the Example shown in the said Example and drawing, It can implement suitably deform | transforming within the range which does not change the summary. It is.

  The print control can be performed by processing the central processing unit based on a print control program stored in the storage device.

  The print control program can be provided not only by a communication means such as a network but also by being recorded on an external recording medium such as a CD-ROM or DVD.

1 is a block diagram illustrating an embodiment of a printing system to which the present invention is applied. It is a figure which shows an example of the data structure of the job information preserve | saved at the job information preservation | save part shown in FIG. 3 is a flowchart illustrating an operation of first printing (printing by first printing control) in the printing apparatus of the printing system illustrated in FIG. 1. FIG. 4 is a diagram illustrating a result of first printing (printing by first printing control) by the operation of the flowchart illustrated in FIG. 3. 6 is a flowchart illustrating an operation related to a second printing instruction. FIG. 6 is a diagram illustrating a state where a first printed sheet is set on a manual feed tray in order to perform second printing. 7 is a flowchart showing an operation of second printing (printing by second printing control) in the printing apparatus of the printing system shown in FIG. 1. In Example 2, it is a figure which shows an example of the data structure of the job information preserve | saved at the job information preservation | save part. FIG. 6 is a diagram illustrating a state where a first printed sheet is set on a manual feed tray in order to perform second printing. FIG. 10 is a diagram illustrating an example of a data structure of job information according to a third embodiment that is stored in a job information storage unit illustrated in FIG. 1. 10 is a flowchart illustrating an operation of first printing (printing by first print control) of the third embodiment in the printing apparatus of the printing system illustrated in FIG. 1. It is a figure which shows the result of the 1st printing (printing by 1st printing control) by the operation | movement of the flowchart shown in FIG. 10 is a flowchart illustrating an operation related to a second printing instruction in the third embodiment. FIG. 10 is a diagram illustrating a state where a first printed sheet is set on a manual feed tray in order to perform the second printing in the third embodiment. 12 is a flowchart illustrating an operation of second printing (printing by second printing control) in the printing apparatus 20 according to the third embodiment. It is a block diagram which shows one Example of the printing system with which Example 4 is applied. FIG. 17 is a diagram illustrating an example of a print job instructed to be printed from the print instruction apparatus illustrated in FIG. 16. It is a flowchart which shows the process of the printing instruction | indication apparatus shown in FIG. It is a flowchart which shows the printing process in the printing apparatus of the printing system shown in FIG. FIG. 10 is a diagram illustrating an example of an output form of discharged paper and a warning display on a user interface unit in a state where the first printing process in the fourth embodiment is interrupted. FIG. 10 is a diagram illustrating an example of an output form of discharged paper and a warning display in a user interface unit at the time of warning of paper resetting information in the fourth embodiment. 10 is a flowchart illustrating a printing process of a printing apparatus 220 according to a fifth embodiment. FIG. 18 is a diagram illustrating an output form of paper discharged when the first printing is completed and printing for paper reset notification is performed when the print data is the data shown in FIG. 17. 10 is a flowchart illustrating a printing process of a printing apparatus according to a seventh embodiment. When the print job is the print job shown in FIG. 17 and the first printing is completed and the paper reset notification print is performed, the output form of the discharged paper and the state in which the paper is turned over together FIG. It is a block diagram which shows one Example of the printing system with which Example 8 is applied. FIG. 27 is a diagram illustrating an example of print data instructed to be printed from the print instruction apparatus illustrated in FIG. 26. 10 is a flowchart illustrating a printing process of a printing apparatus according to an eighth embodiment. FIG. 29 is a flowchart showing a printing process of another job shown in FIG. 28. FIG. FIG. 28 is a diagram illustrating an output form of paper discharged when the first print control of the print job A and the print job B is completed when the print job is the print job A and the print job A illustrated in FIG. 27. 30 is a flowchart illustrating another job printing process corresponding to FIG. 29 according to the ninth exemplary embodiment. FIG. 28 is a diagram illustrating an output form of paper discharged when the first print control of the print job A and the print job B is completed when the print job is the print job A and the print job A illustrated in FIG. 27. 30 is a flowchart illustrating another job printing process corresponding to FIG. 29 according to the tenth embodiment. FIG. 28 is a diagram illustrating an output form of paper discharged when the first print control of the print job A and the print job B is completed when the print job is the print job A and the print job A illustrated in FIG. 27. 30 is a flowchart illustrating another job printing process corresponding to FIG. 29 according to the eleventh embodiment. FIG. 28 is a diagram illustrating an output form of paper discharged when the first print control of the print job A and the print job B is completed when the print job is the print job A and the print job A illustrated in FIG. 27. It is a block diagram which shows one Example of the printing system to which Example 12 is applied. 18 is a flowchart illustrating a first printing process performed by a printing apparatus according to a twelfth embodiment. 18 is a flowchart illustrating a second printing process of the printing apparatus according to the twelfth embodiment. FIG. 38 is a diagram illustrating an example of a data structure of job information stored in a print data storage unit illustrated in FIG. 37. 18 is a sequence chart illustrating first printing control in Embodiment 12. FIG. 19 is a sequence chart showing second printing control by a user of a printing instruction apparatus in Embodiment 12. FIG. FIG. 19 is a sequence chart showing second printing control by a user of a printing instruction apparatus in Embodiment 12. FIG. It is a block diagram which shows one Example of the printing system to which Example 13 is applied. 18 is a flowchart illustrating a first printing process of the printing apparatus according to the thirteenth embodiment. 18 is a flowchart illustrating a second printing process of the printing apparatus according to the thirteenth embodiment. 6 is a diagram illustrating an example of a print job requested by a user from a print instruction apparatus and manual duplex print job information stored in a print data storage unit. FIG. FIG. 48 is a diagram illustrating a first printing example in a case where the print job requested by the user and the manual duplex print job information stored in the print data storage unit are those illustrated in FIG. 47. It is a figure which shows the discharge order at the time of completion | finish of the 1st printing of the 1st paper-3rd paper printed as FIG. FIG. 10 is a diagram illustrating a sheet feeding order of sheets set on a manual feed tray. FIG. 48 is a diagram illustrating a second printing example in a case where the print job requested by the user and the manual duplex print job information accumulated in the print data accumulation unit are those illustrated in FIG. 47. FIG. 52 is a diagram showing a discharge order at the end of the second printing of the first to third sheets printed as in FIG. 51.

DESCRIPTION OF SYMBOLS 10 Print instruction | indication apparatus 20 Printing apparatus 21 Duplex printing possibility judgment part 22 Page data preparation part 23 Paper information storage part 24 Paper information reading part 25 Paper information comparison part 26 Job information storage part 27 Job information reading part 28 Job information deletion part 100 Printing System 200 printing system 210 print instruction device 220 printing device 221 user interface unit 222 host interface unit 223 print data generation unit 224 duplex printing determination unit 225 automatic duplex printing control unit 226 manual duplex printing control unit 227 print data storage unit 228 print page management Unit 229 print job management unit 300 printing system 311 print instruction device 312 print instruction device 320 printing device 321 user interface unit 322 host interface unit 323 print data generation 324 Duplex printing determination unit 325 Automatic duplex printing control unit 326 Manual duplex printing control unit 327 Print data storage unit 328 Print page management unit 329 Print job management unit 330 Interface 400 Printing system 411 Print instruction device 412 Print instruction device 420 Printing device 421 User Interface unit 422 Host interface unit 423 Print language processing unit 424 Print image generation unit 425 Print output unit 426 Automatic duplex printing control unit 427 Duplex printing determination unit 428 Manual duplex printing control unit 429 Print data accumulation unit 430 Accumulated data management unit 431 Accumulated data Selection unit 431
440 Network 500 Printing System 511 Printing Instruction Device 512 Printing Instruction Device 520 Printing Device 521 User Interface Unit 522 Host Interface Unit 523 Print Language Processing Unit 524 Print Image Generation Unit 525 Print Output Unit 526 Automatic Duplex Printing Control Unit 527 Duplex Printing Determination Unit 528 Manual duplex printing control unit 529 Print data storage unit 530 Storage data management unit 531 Storage data selection unit 431
532 ID Printing Department 540 Network

Claims (21)

First determination means for determining, for each page, whether each page is capable of automatic double-sided printing based on paper information given to each page of the print instruction information;
If it is determined by the first determination means that the page is capable of automatic duplex printing , and there is a next page and the paper information of the next page is the same as the paper information of the previous page, the page and the next page If the page is automatically printed on both sides and there is no next page or the paper information of the next page is not the same as the paper information of the page, the page is controlled to be printed on one side with respect to the first side. When it is determined that the automatic duplex printing is not possible by the determination unit 1 and there is a next page and the paper information of the next page is the same as the paper information of the previous page, the next page is set to the page surface. A first print control means for controlling the first side to rotate on the first side by 180 degrees ;
Generating means for generating page information of the second surface not printed by the first print control means;
Storage means for storing the page information generated by the generation means;
Printed paper on which double-sided printing or single-sided printing on the first side is collectively set on the tray by the first print control means, and the storage means is stored on the second side of the set printed paper. A printing apparatus comprising: a second print control unit that performs control to selectively perform printing based on the stored page information. The first print control means includes:
If it is determined by the first determination means that the automatic duplex printing is not possible, and there is no next page or the paper information of the next page is not the same as the paper information of the page, the storage means the printing apparatus according to claim 1, wherein the control to one-side printing on the first surface on the basis of the saved page information. The second print control means includes:
Among the printed sheets, a sheet printed on both sides is reversed and discharged without printing, and a sheet on which the first side is printed on one side is printed by discharging the corresponding page on the second side. The printing apparatus according to claim 1, wherein the printing apparatus is controlled so as to. The storage means includes
The printing apparatus according to claim 1, wherein page information including page data of the second surface that has not been printed by the first print control unit and reference information of the page are stored. The storage means includes
2. The print according to claim 1, wherein the print job data, the print instruction information, the page information not including the page data of the second side not printed by the first print control means, and the reference information of the page information are stored. apparatus. 2. The printing apparatus according to claim 1, further comprising a display control unit configured to perform a display for prompting the setting of the printed paper on the tray after completion of printing by the first print control unit. Second determination means for determining whether or not there is a page on which the automatic double-sided printing cannot be performed before printing the final sheet by the first print control means;
When it is determined by the second determination means that there is a page that cannot be subjected to the automatic double-sided printing, printing on the final sheet is interrupted and a first display for confirming execution of printing on the final sheet is performed. First display control means for controlling;
A final sheet printing control unit that performs printing on the final sheet when a print confirmation operation is performed on the final sheet in response to the display by the first display unit;
2. The printing apparatus according to claim 1, further comprising: a second display control unit that controls to perform a second display that prompts the user to set the printed sheet on the tray after the printing by the final sheet printing control unit is finished. Second determination means for determining whether or not there is a page on which the automatic double-sided printing is not possible after completion of printing by the first print control means;
When the second determination means determines that there is a page that cannot be printed on the automatic duplex printing, the sheet resetting is performed so as to print the sheet reset information that prompts the user to set the printed sheet on the tray. The printing apparatus according to claim 1, further comprising an information printing unit. Second determination means for determining whether or not there is a page on which the automatic double-sided printing is not possible after completion of printing by the first print control means;
A tray for storing paper on which re-setting information that prompts the user to set the printed paper on the tray is stored;
2. The printing apparatus according to claim 1, further comprising: a paper discharge unit that discharges the paper stored in the tray when the second determination unit determines that there is a page that cannot be automatically duplex printed. Second determination means for determining whether or not there is a page in which the automatic double-sided printing is impossible in each page of the print instruction information;
When the second determination unit determines that there is a page that cannot be automatically printed on both sides, printing of paper resetting information that prompts the user to set the tray is performed prior to printing by the first print control unit. Paper reset information printing control means for controlling
The second print control means includes:
Printing apparatus according to claim 1, wherein selectively performing control so that printing of the page relative to the second surface is set before Symbol tray together the printed sheets. Second determination means for determining whether or not there is a page in which the automatic double-sided printing is impossible in each page of the print instruction information;
A tray for storing paper on which re-setting information that prompts the user to set the printed paper on the tray is stored;
A paper discharge means for discharging the paper stored in the tray prior to printing by the first print control means when it is determined by the second determination means that there is a page that is not capable of automatic duplex printing; Comprising
The second print control means includes:
Printing apparatus according to claim 1, wherein selectively performing control so that printing of the page relative to the second surface is set before Symbol tray together the printed sheets. Second determination means for determining whether or not there is a page on which the automatic double-sided printing is not possible after completion of printing by the first print control means;
Display control means for controlling to perform a display prompting the user to set the printed paper on the tray when the second determination means determines that there is a page on which the automatic duplex printing is not possible;
Third determination means for determining whether another print instruction information has been received after the display by the display control means;
If it is determined by the third determination means that the other print instruction information has been received, and there is standby print instruction information for which printing by the first print control means has been completed, the slip sheet is discharged. Discharging means;
Third print control means for controlling to perform printing based on the other print instruction information after the slip sheet is discharged by the slip sheet discharging means;
And fourth judging means for judging whether or not the printed paper is set on the tray after completion of printing by the third printing control means,
The second print control means includes:
The control is performed so as to selectively perform printing on the second surface of the set printed sheet when the fourth determining unit determines that the printed sheet is set. The printing apparatus according to 1. The slip sheet discharging means is
Search means for searching for a tray containing sheets of different sizes together with the paper printed on the first print control means and the paper printed by the third print control means;
The printing apparatus according to claim 12 , further comprising: a discharge control unit that controls to discharge the sheet stored in the tray searched by the search unit as the slip sheet. The slip sheet discharging means is
First search means for searching for a tray containing sheets of different sizes together with paper printed on the first print control means and paper printed by the third print control means;
If there is no corresponding tray by the first search means, a tray containing paper having a different size from either the paper printed by the first print control means or the paper printed by the third print control means A second search means for searching for;
According to claim 12, comprising a discharge control means for discharging the sheets contained in the retrieved tray by the first search means with the retrieved tray or said second search means as the interleaving paper Printing device. The slip sheet discharging means is
The printing apparatus according to claim 12 , wherein predetermined colored paper is discharged as the slip sheet. Second determination means for determining whether or not there is a page on which the automatic double-sided printing is not possible after completion of printing by the first print control means;
Display control means for controlling to perform a display prompting the user to set the printed paper on the tray when the second determination means determines that there is a page on which the automatic duplex printing is not possible;
Third determination means for determining whether another print instruction information has been received after the display by the display control means;
If it is determined by the third determination means that the other print instruction information has been received and there is standby print instruction information for which printing by the first print control means has been completed, the first print control means A fourth determination means for determining whether the paper size printed in step 3 is the same as the paper size printed by the third print control means;
If it is determined by the fourth determination means that the paper size printed by the first print control means is the same as the paper size printed by the third print control means, the first print control means Select a tray that contains paper that is the same size as the printed paper but with a different orientation,
Third print control means for controlling printing based on the other print instruction information;
And fifth determination means for determining whether or not the printed paper is set in the tray after completion of printing by the third print control means,
The second print control means includes:
2. The printing according to claim 1, wherein when the printed paper is determined to be set by the fifth determining means, printing is selectively performed on the second surface of the set printed paper. Printing device. Second determination means for determining whether or not there is a page on which the automatic double-sided printing is not possible after completion of printing by the first print control means;
Display control means for controlling to perform a display prompting the user to set the printed paper on the tray when the second determination means determines that there is a page on which the automatic duplex printing is not possible;
Third determination means for determining whether another print instruction information has been received after the display by the display control means;
If it is determined by the third determination means that the other print instruction information has been received and there is standby print instruction information for which printing by the first print control means has been completed, the first print control means A third print control means for selecting an offset position different from that of the paper printed in, and controlling printing based on the other print instruction information;
And fourth judging means for judging whether or not the printed paper is set on the tray after completion of printing by the third printing control means,
The second print control means includes:
2. The printing according to claim 1, wherein when the fourth determination unit determines that the printed sheet is set, the second surface of the set printed sheet is selectively printed. Printing device. Management means for managing identification information of print instruction information related to the page information stored by the storage means;
The second print control means includes:
The printing apparatus according to claim 1, wherein control is performed so that printing is selectively performed on the second surface based on the identification information managed by the management unit. The first print control means and the second print control means are:
The printing apparatus according to claim 18 , wherein control is performed so that the identification information managed by the management unit is printed simultaneously with the printing. A printing instruction device;
A printing apparatus that performs printing based on a print instruction from the print instruction apparatus,
The printing apparatus includes:
A determination unit that determines, for each page, whether each page is capable of automatic double-sided printing on the basis of paper information given to each page of the print instruction information;
When it is determined that the automatic duplex printing is possible by the determination unit and there is a next page and the paper information of the next page is the same as the paper information of the previous page, the page and the next page are automatically If duplex printing is performed and there is no next page or the paper information of the next page is not the same as the paper information of the page, control is performed so that the page is printed on one side with respect to the first side, and the first determination is performed. If the page is determined to be a page that cannot be automatically printed on both sides and there is a next page and the paper information of the next page is the same as the paper information of the previous page, the next page is set to the page surface by 180 degrees. First printing control means for controlling to rotate and perform single-sided printing on the first surface ;
Generating means for generating page information of the second surface not printed by the first print control means;
Storage means for storing the page information generated by the generation means;
Printed paper on which double-sided printing or single-sided printing on the first side is collectively set on the tray by the first print control means, and the storage means is stored on the second side of the set printed paper. And a second print control means for controlling to selectively perform printing based on the stored page information. Computer
A determination means for determining, for each page, whether each page can be automatically printed on both sides based on paper information given to each page of the print instruction information from the print instruction device;
When it is determined that the automatic duplex printing is possible by the determination unit and there is a next page and the paper information of the next page is the same as the paper information of the previous page, the page and the next page are automatically If duplex printing is performed and there is no next page or the paper information of the next page is not the same as the paper information of the page, control is performed so that the page is printed on one side with respect to the first side, and the first determination is performed. If the page is determined to be a page that cannot be automatically printed on both sides and there is a next page and the paper information of the next page is the same as the paper information of the previous page, the next page is set to the page surface by 180 degrees. First printing control means for controlling to rotate and perform one-side printing on the first surface ;
Generating means for generating page information of the second surface not printed by the first print control means;
Storage means for storing the page information generated by the generation means;
Printed paper on which double-sided printing or single-sided printing on the first side is collectively set on the tray by the first print control means, and the storage means is stored on the second side of the set printed paper. A print control program that functions as a second print control unit that performs control to selectively perform printing based on the stored page information.

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