JP2009137091A - Recording device - Google Patents

Abstract

Even when a recording material is mixed with a portion where ink is applied and a portion where ink is not applied at the stage when recording is performed with an upstream head row, the remaining recording is performed with the downstream head row. To provide a recording apparatus in which variations in the paper gap between the recording material and the head surface are less likely to occur.
A line formed by arranging a plurality of sets of head arrays in which a plurality of recording heads are arranged at a predetermined pitch in the width direction of the recording material, with the arrangement phase of the recording heads being shifted in the feeding direction of the recording material. A head, a platen disposed opposite to the line head with a predetermined gap, and a plurality of suction portions provided on the platen for sucking the recording material onto the platen, The suction part is a position along the line formed by the head row, is a position in the recordable area in the width direction of the line head, and further is a position on the platen corresponding to a position on the side of each recording head. Is provided.
[Selection] Figure 4

Description

  The present invention comprises a head array in which a plurality of recording heads are arranged at a predetermined pitch in the width direction of the recording material, and a plurality of sets are arranged by shifting the arrangement phase of the recording heads in the feeding direction of the recording material. A line head; a platen disposed opposite to the line head with a predetermined gap; and a plurality of suction portions provided on the platen for sucking the recording material onto the platen. The present invention relates to a recording apparatus.

  Hereinafter, an ink jet line printer which is an example of a recording apparatus will be described as an example. Some line printers are equipped with an in-head having a structure in which a plurality of recording heads are arranged in the width direction of a recording material. Particularly in the case of an industrial inkjet line printer, dozens of recording heads are provided, and these recording heads are arranged at a predetermined pitch in the width direction of the recording material to form a head row. One line head is configured by arranging a plurality of sets of the head rows in the recording material feeding direction.

  Below the line head, a platen that supports the lower surface of the recording material with a predetermined gap and guides the conveyance of the recording material, and nozzles of each recording head at the time of stoppage of recording or at the time of head recovery processing, etc. A capping device or the like provided with a cap portion that covers the opening surface is provided.

On the other hand, the serial printer is equipped with a movable recording head that can reciprocate in the width direction of the recording material by a carriage. In the recording execution area below the recording head, a platen that supports the lower surface of the recording material with a predetermined gap and guides the feeding of the recording material is provided. The area on the home position side that is outside the recording execution area below the recording head is provided with a cap portion that covers the head surface that is the nozzle opening surface of the recording head when recording execution is stopped or during head recovery processing. A capping device or the like is provided. Some of the serial printers include a platen in which a large number of suction ports are arranged and arranged as shown in Patent Document 1 below, and the floating of the recording material fed on the platen is lifted by the suction ports. It can be prevented by adsorbing at the part.
JP 2003-246524 A

  However, in the case of the line printer in which one head row is constituted by a plurality of recording heads and one line head is constituted by a plurality of sets of the head rows, first, a predetermined number in the width direction is set in the upstream head row. Partial recording is executed for each pitch, and recording is executed on the remaining portion in the subsequent downstream head row, thereby completing the recording in the width direction. For this reason, at the stage where recording by the upstream head row is executed, the recording material is in a state where the portions painted with ink and the portions not coated are alternately present in the width direction. Therefore, a portion that is swollen by applying ink and a portion that remains dry are mixed, and when the remaining recording is performed by being sent to the downstream head row, the recording material and the head surface There is a problem that the distance (paper gap) is likely to vary.

  It is conceivable that the suction port is arranged in the platen and the recording material is sucked and sucked onto the platen by the suction port. Even in such a case, the suctioned portion is sucked between the painted portion and the unpainted portion. There is a difference in power. Therefore, when the remaining recording is executed by the downstream head row, there is a problem that the paper gap is likely to vary.

  In the case of a line printer, since the position of each recording head is fixed unlike a serial printer, the capping device is arranged at a position facing each recording head. For this reason, there is a situation in which the suction port cannot be provided in the entire area of the platen.

  The problem of the present invention is that even if the recording material is mixed with the ink-coated portion and the non-coated portion at the stage when the recording by the upstream head row is performed, the downstream head row When the remaining recording is performed, the distance (paper gap) between the recording material and the head surface is less likely to vary, that is, the paper gap is made substantially the same between the upstream head row and the downstream head row. It is an object of the present invention to provide a recording apparatus that can do the above.

  In a recording apparatus according to a first aspect of the present invention for solving the above-mentioned problem, a head array in which a plurality of recording heads are arranged at a predetermined pitch in the width direction of the recording material is arranged in the feeding direction of the recording material. A plurality of sets of line heads arranged by shifting the arrangement phase of the recording heads, a platen arranged opposite to the line heads with a predetermined gap, and the recording material are adsorbed on the platen. A plurality of suction sections provided on the platen, the suction section being a position along a line formed by the head row, a position in the recordable area in the width direction of the line head, and It is provided at a position on the platen corresponding to the position on the side of each recording head.

  That is, according to the present invention, the line head includes a plurality of sets of head arrays in which a plurality of recording heads are arranged at a predetermined pitch in the width direction of the recording material, with the arrangement phase of the recording heads shifted in the feeding direction of the recording material. Further, the suction portion is provided at a position on the platen corresponding to the position on the side of each recording head, and the suction portion is located in the recordable area of the line head. Similarly, the sections are also arranged such that the arrangement phase is shifted for each head row. This feature provides the following operational effects.

  According to this aspect, at the stage when the recording by the upstream head row is executed, the recording material is mixed with the ink-painted portion and the unpainted portion. Although the suction action for the recording material is performed at the side portion of the recording head, the recording material is in a free state where the recording material does not receive the suction force at the portion facing the recording head. For this reason, the portion applied to the ink can swell in a free state, while the portion not applied with the ink is sucked and restrained by the suction portion. As a result, cockling is formed with regularity corresponding to the pitch of each suction portion.

  Subsequently, when the recording material is sent to the downstream head row, a position that receives the suction force of the suction portion and a free position that does not receive the suction force due to a shift in the arrangement phase of each recording head and each suction portion Move by the amount of the phase shift. That is, the suction suction position of the recording material by the suction portion is different by the amount of the phase difference between the position facing the upstream head row and the position facing the downstream head row, from the upstream side to the downstream side. In addition, the recording material can be delivered. As a result, the cockling phase (mountain and valley cycle) deviates by the phase shift of the suction portion, but the cockling regularity is maintained.

  Therefore, even if the recording material is mixed with the ink-coated portion and the non-coated portion at the stage when the recording with the upstream head row is performed, the remaining recording is performed with the downstream head row. During execution, the distance (paper gap) between the recording material and the head surface is less likely to vary, and recording is performed with the paper gap being substantially the same between the upstream head row and the downstream head row. can do. Thereby, it is possible to prevent the occurrence of unevenness in the image quality of the portion recorded by each recording head of each head row.

  According to a second aspect of the present invention, in the recording apparatus according to the first aspect, the recording heads constituting the line head are arranged in a staggered manner, and the suction portion is provided in a staggered arrangement opposite to the recording head. It is characterized by being.

  According to this aspect, the cock ring has a staggered arrangement structure in which the cockling peaks and valleys appearing in the width direction of the recording material are opposed to the upstream head row and the downstream head row. The recording material can be transferred from the upstream side to the downstream side with a different half pitch. That is, the paper gap at the time of recording by the recording heads of the upstream and downstream head arrays is substantially constant because the regularity of the cocklin is maintained, and recording is performed by each recording head of each head array. It is possible to prevent unevenness in the image quality of the portion.

  According to a third aspect of the present invention, in the recording apparatus according to the first aspect or the second aspect, the platen has a cap for covering the head surface of the recording head at a position facing the recording head. A cap portion opening that allows the portion to enter and exit is provided.

  According to this aspect, it becomes possible to perform the capping operation on the line head, and it is possible to perform operations such as cleaning of the nozzle openings of the recording head and removal of clogging performed when the image formation is stopped or when the recording head is recovered.

  According to a fourth aspect of the present invention, in the recording apparatus according to any one of the first to third aspects, a recording material on the platen provided in a space between the plurality of head arrays arranged And an intermediate roller opening provided at a position corresponding to the intermediate roller of the platen.

  According to this aspect, the recording material lifted in the space between the head rows due to the presence of the intermediate roller can be prevented by the nip of the intermediate roller, so that the posture of the recording material conveyed on the platen can be adjusted on the platen. It can be stabilized over the entire range.

  According to a fifth aspect of the present invention, in the recording apparatus according to the fourth aspect, the intermediate roller is disposed at a position corresponding to each of the plurality of suction portions located on the downstream side in the feeding direction of the recording material. It is characterized by being.

  According to this aspect, since the intermediate roller is disposed at a position corresponding to each of the plurality of suction portions located downstream in the feeding direction of the recording material, suction suction by the downstream suction portion is performed. The regularity can be maintained while shifting the cockling phase.

  According to a sixth aspect of the present invention, in the recording apparatus according to any one of the first to fifth aspects, the suction portion is provided on a rib extending in a feeding direction of the recording material, and on both sides of the rib. A concave portion and a thin portion below the concave portion, a thick portion provided outside the concave portion and the thin portion, and a plurality of suction holes provided in the thin portion and the thick portion, The upper surface of the rib and the thick part is formed flush with the upper surface of the other part of the platen.

  According to this aspect, the recording material can be surely adsorbed to the platen by the presence of the thin-walled portion and the plurality of suction holes provided in the thick-walled portion and the recessed portions provided on both sides of the rib, and the recording material can be lifted. Can be prevented. In addition, since the lower surface of the recording material is attracted by surface contact closely contacting the rib and the upper surface of the thick portion, there is no loss of feed amount due to the inclination (skew) of the recording material during conveyance or slipping of the ground surface. Does not occur. The upper surface of the rib and the thick part is flush with the upper surface of the other part of the platen. By providing the suction port and the recessed part, the contact area between the recording material and the platen is reduced. Since the conveyance load is reduced, smooth and stable conveyance of the recording material is also realized.

  According to a seventh aspect of the present invention, there is provided a first head row comprising a recording head having a line arrangement along the width direction of the recording material, and a recording head having a staggered arrangement with respect to the first head row. A first suction composed of a second head row and a suction platen arranged opposite to the first and second recording head groups and having a line arrangement along the width direction of the recording material. A platen having a part row and a second suction part row composed of suction parts in a staggered arrangement with respect to the first suction part row, and at least one of the suctions in the first suction part row A portion is provided to face a space between the recording heads of the first head row, and at least one suction portion in the second suction portion row is between the recording heads of the second head row. It is provided facing the space

  Hereinafter, a recording apparatus according to the present invention will be described. First, as a best mode for carrying out the recording apparatus of the present invention, a head array 5 in which a plurality of recording heads 3 are arranged at a predetermined pitch a in a width direction B of a recording material (hereinafter also referred to as a sheet) P is a sheet. An outline of the overall configuration of the inkjet printer 100 including the line heads 7 arranged in a plurality of sets with the phases shifted in the P feeding direction A will be briefly described.

  1 is a side sectional view showing an outline of the internal structure of the ink jet printer, FIG. 2 is a plan view showing the outline of the internal structure of the ink jet printer, and FIG. 3 is a plan view showing the arrangement of recording heads and the arrangement of nozzle openings. . The ink jet printer 100 forms an image by performing recording on the recording surface of the paper P held and transported by the transport system device 9 that holds and transports the paper P. A recording execution system 11 is provided. The transport system device 9 is classified into a feeding unit 13, a transport unit 15, and a discharge unit 17, and the paper set in the feeding cassette 21 in the feeding cassette 21 by the feeding unit 19 in the feeding unit 13. P is fed out one by one from the top sheet P in order.

  The paper P fed out from the feeding unit 13 reaches the transport unit 15, passes through auxiliary rollers 23 and 25 configured by two sets of nip rollers, and passes through auxiliary rollers 23 and 25 that are also configured by a pair of nip rollers. Led. Then, the sheet P is supplied to the recording position 29 by receiving the conveying force from the conveying roller 27, guided to the downstream side with the lower surface supported by the recording material conveying guide apparatus 1, and the recording is performed from above. Ink of each color is ejected from the nozzle opening surface 4 of the recording head 3 which is a main constituent member of the execution system 11 to form a desired image.

  Further, the sheet P on which the image is formed reaches the discharge unit 17 and is discharged to the outside by a belt conveyance unit 79 in which a belt 77 is wound between the driving roller 71, the driven roller 73 and the tension roller 75. In FIG. 1, a member denoted by reference numeral 81 is an electrostatic adsorption mechanism, and the paper P supplied to the belt conveyance unit 79 is adsorbed on the surface of the belt 77 by static electricity generated by the electrostatic adsorption mechanism 81. It is conveyed in the state.

  Further, the illustrated ink jet printer 100 is provided with a line head 7 as a recording execution system device 11. In the line head 7, three recording heads 3 are arranged at an upstream position C to form a head row 5 </ b> A. The four recording heads 3 are arranged at the downstream position D moved downstream by the distance L to form a head row 5B. In both the head row 5A and the head row 5B, the recording heads 3 are arranged at intervals of the pitch a. Further, in the head row 5A and the head row 5B, the recording heads 3 are arranged in a state where the phases are shifted by a half pitch a / 2. In addition, as shown in FIG. 3, each recording head 3 has eight nozzles 40Y, 40M, 40C, a total of eight nozzles in the width direction B of the paper P and four rows in the feed direction A of the paper P, as shown in FIG. 40K, nozzle openings 40K for ejecting “black” ink in order from the upstream row in the feed direction A of the paper P, nozzle openings 40C for ejecting “cyan” ink, “magenta” ink As an example, the nozzle openings 40M for discharging the ink and the nozzle openings 40Y for discharging the “yellow” ink are arranged in each row. In addition, the nozzle openings 40 located at the end portions in the width direction B of the paper P in each recording head 3 are provided as an example in an arrangement in which the head row 5A and the head row 5B overlap each other.

[Example]
Next, embodiments of the present invention will be specifically described with reference to the drawings.
4 is a plan view showing the main part of the recording apparatus of the present invention and a front view showing the state of cockling of the recording material. FIG. 5 shows the structure of the duct and negative pressure chamber connected to the adsorption part of the platen. It is a perspective view. 6 is a cross-sectional view taken along the line AA in FIG. 4, and FIG. 7 is an enlarged cross-sectional view showing a part of the suction portion in FIG.

  The recording apparatus according to this embodiment includes a platen 37 that is substantially the same size as the entire size of the line head 7. The platen 37 includes a plurality of suction portions 42 and 43 at positions facing the head rows 5A and 5B and facing the side position 39 of the recording head 3 where the recording head 3 does not exist ( In this embodiment, 7 sets) are arranged. Specifically, as shown in FIG. 4, four sets of suction portions 42 a, 42 b, 42 c, and 42 d are arranged at an upstream position C of the platen 37 at the same pitch a as the recording head 3. Three sets of suction portions 43a, 43b, and 43c are similarly arranged at intervals of the pitch a at the downstream position D.

  The recording heads 3 are arranged in a staggered manner by being arranged with a half pitch a / 2 shifted between the head row 5A and the head row 5B, and the seven sets of suction portions 42 and 43 are also Corresponding to the staggered arrangement of the recording heads 3, the recording heads 3 are arranged in a staggered arrangement opposite to the recording heads 3.

  Further, as shown in FIG. 7, the suction portions 42 and 43 include a rib 45 extending in the feeding direction A of the paper P at the center, and recessed portions 47 and 49 on the left and right of the rib 45. Further, thin portions 51 and 53 are provided below the recessed portions 47 and 49, and thick portions 55 and 57 are provided outside the recessed portions 47 and 49 and the thin portions 51 and 53. Two suction holes 59 are provided for each of the thin portions 51 and 53, and three suction holes 59 are provided for each of the thick portions 55 and 57. Further, the upper surfaces of the rib 45 and the thick portions 55 and 57 are formed to be substantially flush with the upper surfaces of other portions of the platen 37.

  As shown in FIGS. 5 and 6, seven rectangular ducts 32 and 33 are connected below the seven sets of suction portions 42 and 43. In order to distinguish these seven ducts 32 and 33, the ducts connected to the four sets of suction portions 42a, 42b, 42c and 42d arranged at the upstream position C are respectively 32a, 32b, 32c, 32d, and the ducts connected to the three sets of suction portions 43a, 43b, and 43c arranged at the downstream position D are 33a, 33b, and 33c, respectively. The openings at the lower ends of the seven ducts 32 and 33 are connected to a hollow negative pressure chamber 34 having a rectangular flat plate shape, and the air G in the negative pressure chamber 34 is transferred to the negative pressure chamber 34 from the outside. A suction fan 35 that connects the negative pressure chamber 34 and the atmosphere of the ducts 32 and 33 to a negative pressure is connected.

  The platen 37 is also provided with seven cap openings 61 at positions facing the seven recording heads 3. The cap portion opening 61 is an opening that allows the cap portion 63 to cover the nozzle opening surface 4 of the recording head 3 during non-recording, and has a rectangular shape that is slightly larger than the recording head 3. It is composed of square holes. The cap portion 63 is a constituent member of the capping device, and can move up and down a predetermined stroke by receiving a driving force from a driving mechanism (not shown). When the seven recording heads 3, the cap opening 61 and the cap 63 are distinguished, the recording heads 3a, 3b and 3c, the cap openings 61a, 61b and 61c The cap portions 63a, 63b, and 63c are identified as the recording heads 3d, 3e, 3f, and 3g, the cap portion openings 61d, 61e, 61f, and 61g, and the cap portions 63d, 63e, 63f, and 63g. .

  Further, in the space S between the head arrays 5A and 5B, five sets of intermediate rollers 65a, 65b, 65c, 65d constituted by a pair of nip rollers for nipping and conveying the paper P on the platen 37, 65e is provided. The intermediate roller is disposed at a position corresponding to each of the plurality of suction portions 42a, 43b, and 43c located on the downstream side in the feeding direction of the recording material P. The platen 37 has the intermediate rollers 65a, 65b, 65c, 65d, 65e at positions corresponding to the five sets of intermediate rollers 65a, 65b, 65c, 65d, 65e to avoid interference with the intermediate rollers 65a, 65b, 65c, 65d, 65e. Three roller openings 67a, 67b, 67c that are slightly larger than the rollers 65a, 65b, 65c, 65d, 65e, and two roller notches 68a, 68b are provided.

  Next, an operation mode of the recording apparatus of the present invention configured as described above will be described. The sheet P guided to the recording position 29 by the conveying roller 27 shown in FIG. 1 contacts the upper surface of the platen 37 and reaches the upstream position C so as to slide on the platen 37. When the upstream position C is reached, the atmosphere in the negative pressure chamber 34 and the ducts 32 and 33 becomes negative pressure due to the suction air generated by the suction fan 35. The paper P positioned on the platen 37 through the suction holes 59 is in close contact with the upper surface of the platen 37 at the suction portion 42, and a regular cockling state with a pitch a shown at the right end in FIG. 4 is formed. . On the other hand, at the portion where the cap portion opening 61 is formed, the paper P is somewhat lifted toward the recording head 3 side, but the lift amount H is very small, and the head rubbing and image quality are low. There is no problem such as degradation.

  When the sheet P is conveyed downstream by the distance L / 2, the sheet P is sandwiched from above and below by the intermediate roller 65 and receives a conveying force. At this position, the sheet P is prevented from being lifted by the clamping force of the intermediate roller 65. Further, when the paper P is transported to the downstream side by the distance L / 2, the paper P reaches the downstream position D. When the sheet reaches the downstream position D, the sheet P positioned on the platen 37 is brought into close contact with the upper surface of the platen 37 by the suction air generated by the suction fan 35, and the pitch a shown at the left end in FIG. A regular cockling state is formed.

  Note that the cockling state of the paper P at the downstream position D is out of phase with the cockling state of the paper P at the upstream position C by a half pitch a / 2. The apparent positions of the suction portions 42 and 43 of the paper P are a / 2 pitch, and the suction force is increased so that the posture of the paper P becomes more stable. In addition, due to the synergistic action of the suction portions 42 and 43 at the upstream position C and the downstream position D, the floating amount H of the paper P is also suppressed to a low level. Thereafter, the sheet P is conveyed in a smooth and stable state on the platen 37 toward the discharge unit 17 while maintaining a regular cockling state while alternately changing the positions of the suction units 42 and 43.

[Other embodiments]
The recording apparatus 100 according to the present invention is based on the configuration as described above, but it is of course possible to change or omit the partial configuration without departing from the gist of the present invention. .

  For example, the configuration of the feeding unit 13 of the recording apparatus 100 is not limited to the feeding cassette, and may be a feeding tray provided in an inclined posture, and when the distance between the feeding unit 13 and the transport roller 27 is short. The auxiliary rollers 23 and 25 can be omitted. Further, instead of the belt conveyance unit 79 provided in the discharge unit 17, a discharge roller constituted by a pair of nip rollers can be applied.

  The number and arrangement of the suction units 42 and 43 can be variously changed according to the number and arrangement of the recording heads 3. For example, when the recording heads 3 are provided in a plurality of rows of three or more, the suction units 42 are arranged. , 43 can also be provided in three or more rows corresponding to the recording head 3. Further, in this case, the arrangement of the suction portions 42 and 43 is not necessarily staggered, but the head row 5 gradually shifts the phase so that the paper P is equal to or larger than the staggered arrangement. Reduction of the flying height H and smooth conveyance of the paper P are achieved.

  The number, size, shape, and arrangement of the ribs 45, the recessed portions 47 and 49, the thin portions 51 and 53, the thick portions 55 and 57, and the suction holes 59 provided in the suction portions 42 and 43 are the same as those in the above embodiment. The suction portions 42 and 43 having various configurations can be employed without being limited to various ones. In addition, the recording apparatus of the present invention is not limited to a line printer, and can be applied to other various recording apparatuses 100 having the same line head 7.

1 is a side sectional view showing an outline of an internal structure of an ink jet printer according to the present invention. The top view which shows the outline of the internal structure of the inkjet printer. FIG. 2 is a plan view showing an arrangement of recording heads and an arrangement of nozzle openings of the printer. FIG. 2 is a plan view showing a main part of the printer. The perspective view which shows the duct and negative pressure chamber which are connected to the adsorption | suction part of a platen. AA sectional drawing in FIG. Sectional drawing which expands and shows a part of adsorption | suction part in FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Conveyance guide apparatus, 3 Recording head, 4 Nozzle opening surface, 5 Head row | line | column, 7 Line head, 9 Conveyance system apparatus, 11 Recording execution system apparatus, 13 Feeding part, 15 Conveyance part, 17 Ejection part, 19 Feeding Feeding unit, 21 feeding cassette, 23 auxiliary roller, 25 auxiliary roller, 27 conveying roller, 29 image forming position, 32 duct, 33 duct, 34 negative pressure chamber, 35 suction fan, 37 platen, 39 side position, 40 Nozzle opening, 42 Suction part, 43 Suction part, 45 Rib, 47 Recessed part, 49 Recessed part, 51 Thin part, 53 Thin part, 55 Thick part, 57 Thick part, 59 Suction hole, 61 Cap part opening , 63 Cap section, 65 Intermediate roller, 67 Roller opening, 68 Roller notch, 71 Drive roller, 73 Driven roller, 75 Tension Roller, 77 belt, 79 belt transport unit, 81 electrostatic adsorption mechanism, 100 inkjet printer (recording device), A feed direction, B width direction, P paper (recording material), a pitch, C upstream position, D downstream position , L distance, G air, S space, H lift

Claims (7)

A line head in which a plurality of recording heads are arranged at a predetermined pitch in the width direction of the recording material, and a plurality of sets are arranged by shifting the arrangement phase of the recording heads in the feeding direction of the recording material;
A platen disposed opposite to the line head with a predetermined gap therebetween;
A plurality of suction portions provided on the platen to suck the recording material onto the platen;
The suction portion is a position along a line formed by the head row, is a position in a recordable area in the width direction of the line head, and further on a platen corresponding to a position on the side of each recording head. A recording apparatus provided at a position. The recording apparatus according to claim 1,
The recording apparatus, wherein the recording heads constituting the line head are arranged in a staggered manner, and the suction portion is provided in a staggered arrangement opposite to the recording head. The recording apparatus according to claim 1 or 2,
2. A recording apparatus according to claim 1, wherein the platen is provided with a cap portion opening at a position facing the recording head to allow the cap portion for covering the head surface of the recording head to enter and exit. The recording apparatus according to any one of claims 1 to 3,
An intermediate roller that is provided in a space between the plurality of head arrays arranged, and nips and conveys the recording material on the platen;
A recording apparatus comprising: an opening for an intermediate roller provided at a position corresponding to the intermediate roller of the platen. The recording apparatus according to claim 4,
The recording apparatus according to claim 1, wherein the intermediate roller is disposed at a position corresponding to each of the plurality of suction portions positioned on the downstream side in the feeding direction of the recording material. In the recording device according to any one of claims 1 to 5,
The adsorption part is
A rib extending in the feeding direction of the recording material;
A concave portion provided on both sides of the rib and a thin portion below the concave portion;
A thick part provided outside the recessed part and the thin part;
A plurality of suction holes provided in the thin part and the thick part,
An upper surface of the rib and the thick part is formed flush with an upper surface of another part of the platen. A first head row comprising recording heads arranged in a line along the width direction of the recording material;
A second head row comprising recording heads in a staggered arrangement with respect to the first head row;
A platen disposed opposite to the first and second recording head groups,
A first suction section row comprising suction sections that form a line array along the width direction of the recording material;
A second adsorption part row comprising adsorption parts in a staggered arrangement with respect to the first adsorption part row;
A platen having
At least one suction portion in the first suction portion row is provided to face a space between the recording heads of the first head row;
The recording apparatus according to claim 1, wherein at least one of the suction units in the second suction unit row is provided to face a space between the recording heads of the second head row.

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