JP3563248B2 - Paper handling equipment - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a sheet processing apparatus for aligning sheets discharged from a main body of a copier, a printer, a facsimile, a printing machine, or an image forming apparatus having at least two of these functions, and binding the sheet bundle with staples.
[0002]
[Prior art]
The paper processing apparatus of the above type sequentially feeds sheets discharged one by one from the image forming apparatus main body to a staple tray and stacks the sheets, aligns each sheet fed to the staple tray by a sheet aligning device, and then stacks the sheets. Are stapled by a stapling device, and the stapled sheet bundle is discharged from a staple tray by a sheet discharging device. The sheet aligning device includes a reference fence serving as a reference for aligning sheets, and a jogger fence for pressing each sheet against the reference fence to align the sheets in the width direction.
[0003]
When a sheet is fed into the staple tray, the reference fence occupies a reference position outside one side edge of the sheet, and the jogger fence also has an alignment operation start position that is outwardly separated from the other side edge of the sheet. When the sheet is fed to the staple tray, the jogger fence moves closer to the reference fence to the alignment position. At this time, the sheet is pressed toward the reference fence, and the sheet is aligned at a predetermined position. When paper alignment is not required, for example, when the paper processing apparatus is not operating, the reference fence waits at a standby position different from the above-described reference position.
[0004]
In the above-described sheet processing apparatus, for example, depending on whether the image surface of the sheet discharged from the image forming apparatus main body is facing upward or downward, or from conditions such as the form of a paper conveying path to a staple tray in the paper processing main body, In some cases, the stapling apparatus needs to be configured so as to bind a part of the bundle of sheets stacked on the staple tray on the back side of the sheet processing apparatus main body. In this case, the stapling apparatus is disposed at a relatively deep position in the main body of the sheet processing apparatus.
[0005]
In such a sheet processing apparatus, when performing maintenance work such as repairing the stapling apparatus or supplying staples to the apparatus, an operator is positioned from the near side to the back side of the sheet processing apparatus main body. The required work must be performed by greatly reaching the stapling apparatus to be performed, and the workability is reduced.
[0006]
Also in this type of sheet processing apparatus, when a sheet bundle is stapled by staples, it is necessary to increase the accuracy of the stapling position so that the stapling position with respect to the sheet bundle is always substantially constant.
[0007]
[Problems to be solved by the invention]
SUMMARY OF THE INVENTION An object of the present invention is to provide a paper processing apparatus which solves the above-mentioned conventional problems at a glance.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a staple tray for feeding sheets ejected from an image forming apparatus main body one by one and stacking the sheets, and a method for feeding each sheet sent to the staple tray in the width direction. A paper alignment device, a stapling device that binds the aligned paper bundle with staples, and a paper discharge device that discharges the bound paper bundle from the staple tray. A reference fence operably supported between a reference position distant from one side edge of the incoming sheet and a standby position different from the reference position, and a reference fence for the sheet fed to the staple tray. From the other side edge, press the paper against the aligning operation start position separated outside and the reference fence stopped at the reference position. A jogger fence operably supported between an alignment position for aligning the sheets, and the stapling apparatus is configured to bind a portion of the sheet bundle stacked on the staple tray on the back side of the sheet processing apparatus main body. In the sheet processing device disposed in, the reference fence is disposed on the back side of the sheet processing device body than the jogger fence, and the stapling device operates integrally with the reference fence, A paper processing apparatus is proposed, wherein the paper processing apparatus is fixedly connected to the reference fence and the standby position of the reference fence is set closer to the paper processing apparatus body than the reference position of the reference fence.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0010]
1 is a front view showing the internal structure of the paper processing apparatus of the present embodiment from the front side, FIG. 2 is a partially enlarged front view of FIG. 1, and FIG. 3 is a front view showing a part of FIG. FIG.
[0011]
An image forming apparatus main body (not shown), for example, a copying machine main body, is disposed on the right side of the sheet processing apparatus shown in FIG. 1, and a sheet having an image formed on its surface, for example, a copied Are discharged one by one. The respective sheets are carried into the sheet processing apparatus main body 1 while being guided in the direction of arrow A by the entrance guide plates 2 and 3 of the sheet processing apparatus main body 1, and are transported into the sheet processing apparatus main body 1 by the conveyance roller pairs 4 and 5. It is transported on the transport path 6.
[0012]
A branch claw 7 is provided in the paper transport path 6, and operates between a first position indicated by a solid line in FIGS. 1 and 3 and a second position indicated by a dashed line. It is pivotally supported by a support frame (not shown) of the sheet processing apparatus main body 1 via a pivot pin 7A as much as possible. When the paper is discharged from the paper processing apparatus main body 1 without binding the paper, the branching pawl 7 occupies the second position, whereby the paper is guided to the paper transport path 8 and is transported by the transport roller pairs 9 and 10. The sheet is conveyed in the direction of arrow B, and is discharged onto the sheet discharge tray 12 by the sheet discharge roller pair 11 as indicated by arrow C.
[0013]
When binding the paper conveyed into the paper processing apparatus main body 1, the branch claw 7 occupies the first position shown by the solid line, and therefore, the paper conveyed by the conveying roller pair 5 as shown in FIGS. P is fed onto the staple tray 13 fixedly supported by the support frame of the sheet processing apparatus main body 1 while being guided by the branch claws 7. In FIG. 3, a state in which one sheet of paper P exits from the transport roller pair 5 and is sent to the staple tray 13 is indicated by a two-dot chain line, and an arrow D indicates the movement of the sheet P at this time. .
[0014]
FIG. 4 is a perspective view of a part of the staple tray 13 and related elements when viewed from an oblique right side of FIG. 1, and FIG. 5 is a view of these elements viewed from a side opposite to FIG. In these figures, the staple tray 13 is indicated by an alternate long and short dash line, and the paper is indicated by an alternate long and two short dashes line.
[0015]
As shown in FIGS. 1 to 5, an appropriate number of stoppers 14 are fixed to the lower portion of the staple tray 13 in the illustrated example, and the paper P that has exited the conveying roller pair 5 is staple tray by its own weight. 13, the trailing edge 31 is received by the stopper 14 and placed on the staple tray 13. In this way, the sheets P discharged one by one from the image forming apparatus main body are sent to the staple tray 13 and stacked here. That is, each sheet is placed in a state of being stacked on the staple tray 13. At this time, the trailing edge 31 of each sheet P abuts against the stopper 14, and the position of the trailing edge 31 of each sheet is aligned with respect to the stopper 14. The number of sheets carried into the sheet processing apparatus main body 1 is detected by a sensor 42 provided near the sheet entrance of the sheet processing apparatus main body 1.
[0016]
As described above, the illustrated sheet processing apparatus has the staple tray 13 for feeding the sheets P discharged from the image forming apparatus main body one by one and stacking the sheets P. 13 is provided with a paper aligning device for aligning each of the papers P sent to the printer 13 in the width direction thereof. This sheet aligning device has a reference fence 15 and a jogger fence 16 as shown in FIGS. The reference fence 15 and the jogger fence 16 extend long in parallel with the side edges 17 and 18 of the sheets fed to the staple tray 13 and stacked, and each edge of the reference fence 15 in the width direction has a plate-like shape. Flanges 19 and 20 are respectively provided integrally, and the whole has a substantially U-shaped cross section. Similarly, plate-like flanges 21 and 22 are integrally attached to each edge in the width direction of the jogger fence 16, and the whole has a substantially U-shaped cross-sectional shape.
[0017]
Here, assuming that the surface of the staple tray 13 on which the sheet P is placed is the front surface 13A and the opposite surface is the back surface 13B, the reference fence 15 and the jogger fence 16 are on the side of the front surface 13A of the staple tray 13. , The fences 15 and 16 take a posture substantially perpendicular to the surface 13 </ b> A of the staple tray 13, and one of the flanges 19 and 21 integrally attached to the fences 15 and 16 respectively form the staple tray 13. Is slidably in contact with the surface 13A of the main body.
[0018]
As shown in FIG. 5, a fence drive motor 23 and a jogger drive motor 24 are disposed on the back surface 13B side of the staple tray 13, and these motors 23 and 24 are fixed to the support frame of the sheet processing apparatus main body 1, respectively. Supported. Similarly, pulleys 25 and 26 rotatably supported by a support frame of the paper processing apparatus main body 1 are disposed on the back surface 13B side of the staple tray 13 and are fixed to an output shaft of a fence drive motor 23. An endless belt 27 is wound around a pulley not shown and a pulley 25 shown in FIG. An endless belt 28 is also wound around a pulley (not shown) fixed to the output shaft of the jogger drive motor 24 and a pulley 26 shown in FIG. One belt 27 is locked by a mounting piece 29 fixed to a flange 19 integral with the reference fence 15, and similarly, the other belt 28 is also fixed to a flange 21 integral with the jogger fence 16. It is locked on the piece 30. Both the fence drive motor 23 and the jogger drive motor 24 are composed of stepping motors.
[0019]
The projections 46 and 47 integrally provided on the two flanges 19 and 21 are slidably fitted to the guide rod 33, and the guide rod 33 extends in the width direction W of the sheet P, and is connected to the sheet processing apparatus. It is fixed to a support frame of the main body 1.
[0020]
When the drive motors 23 and 24 operate to drive the belts 27 and 28, the reference fence 15 and the jogger fence 16 move in the width direction W of the sheets stacked on the staple tray 13 while being guided by the guide rods 33. Operate. At this time, notches (not shown) are formed in the staple tray 13 so as to extend in the width direction of the paper so that the attachment pieces 29 and 30 and the protrusions 46 and 47 do not interfere with the staple tray 13.
[0021]
As described above, when the paper P is sent to the staple tray 13, the reference fence 15 and the jogger fence 16 are waiting at positions outside the respective side edges of the paper P. Assuming that the sheet indicated by reference numeral P1 in FIGS. 4 and 5 is the sheet sent to the staple tray 13, the reference fence 15 and the jogger fence 16 are perpendicular to the width direction W of the sheet P1. And waits at a position outside by a predetermined distance δ (FIG. 4) from the side edge 17A and the other side edge 18A. This predetermined distance δ is, for example, about 10 mm. The position of the reference fence 15 at this time is a reference position, and the position of the jogger fence 16 at this time is also the alignment operation start position.
[0022]
When the sheet P1 is fed into the staple tray 13 and the trailing edge 31 hits the stopper 14, the jogger fence 16 starts operating in a direction approaching the reference fence 15 that has been stopped by the operation of the jogger drive motor 24. Then, the other side edge 18A of the sheet P1 is pressed, and the one side edge 17A of the sheet P1 is brought into contact with the reference fence 15 to align the sheet P1 at a predetermined position.
[0023]
The position where the jogger fence 16 is closest to the reference fence 15 is the alignment position of the jogger fence 16. The jogger fence 16 that has been operated to the alignment position is returned to the alignment operation start position shown in FIGS. 4 and 5 again by the reverse rotation operation of the jogger drive motor 24, and stands by here.
[0024]
Each time a sheet is fed into the staple tray 13, the jogger fence 16 executes the above-described aligning operation, whereby each sheet becomes an aligned sheet bundle as indicated by a reference numeral P2 in FIGS. And is stacked on the staple tray 13. The stroke in which the jogger fence 16 moves from the alignment operation start position to the alignment position is, for example, a distance several mm larger than 2 × δ.
[0025]
On the other hand, for example, when the power of the sheet processing apparatus is turned off, the reference fence 15 is stopped at a standby position other than the above-described reference position, and the image forming apparatus main body side performs image forming. When the operation starts, the reference fence 15 moves to the reference position shown in FIGS. 4 and 5 and stops by the operation of the fence drive motor 23. Since the reference position is a position separated by a predetermined distance δ from one side edge 17A of the sheet P1 sent to the staple tray 13, the reference position of the reference fence 15 is determined according to the width size of the sheet. fluctuate. By the operation of the fence drive motor 23, the reference fence 15 moves to a reference position corresponding to the width size of the sheet sent to the staple tray 13, and waits for the sheet to be sent. Similarly, the alignment operation start position of the jogger fence 16 also changes according to the paper width size.
[0026]
As described above, the reference fence 15 operates between the reference position separated from the one side edge 17A of the sheet P1 fed to the staple tray 13 and the standby position different from the reference position. The jogger fence 16 is supported with respect to the sheet processing apparatus main body 1, and the jogger fence 16 is provided with an alignment operation start position separated from the other side edge 18 </ b> A of the sheet P <b> 1 fed into the staple tray 13 to the outside thereof, The sheet P1 is pressed against the reference fence 15 stopped at the position and is supported by the sheet processing apparatus main body 1 so as to be operable between an alignment position where the sheet P1 is aligned.
[0027]
When a predetermined number of sheets are stacked on the staple tray 13 and they are all aligned by the sheet aligning device, the sheet bundle P2 becomes one member 32A of the stapling device 32 shown in FIGS. The stapling device 32 is operated in this state and enters the space 32C between the members 32B, the members 32A and 32B approach each other, and the sheet bundle P2 is bound by a staple (not shown). The sheet bundle P2 is stapled.
[0028]
As described above, the illustrated sheet processing apparatus has the stapling device 32 that binds the sheet bundle P2 sent to the staple tray 13 and aligned by the sheet aligning device with the staples. A paper discharge device for discharging P2 from the staple tray 13 is provided.
[0029]
As shown in FIGS. 1, 2 and 4, the paper discharge device of this embodiment has pulleys 133, 134 and 135 rotatably supported by a support frame of the paper processing device main body 1, and is wound around these. An endless belt 36, a discharge claw 37 (FIGS. 1 and 4) fixed to the surface of the belt 36 and protruding outward from the surface, and a stepping motor supported by a support frame of the sheet processing apparatus main body 1. A drive motor 38 (FIG. 1), a drive pulley 39 fixed to its output shaft, a driven pulley 40 disposed coaxially with the aforementioned pulley 133, and an endless loop wound around these pulleys 39, 40. And a transmission belt 41 in a shape of a circle. The belt portion between the pulley 133 and the other pulley 135 is located on the side of the surface 13A of the staple tray 13, and the surface portion of the staple tray 13 with which this belt portion abuts is slightly recessed than the other surface portions. (Fig. 4).
[0030]
The discharge claw 37 is normally waiting at the position (home position) shown in FIG. This position is the position where the discharge claw home sensor (not shown) has detected the discharge claw 37. When a stapling operation for binding the sheet bundle P2 is performed by the stapling device 32, or at an appropriate time before that, the driving motor 38 operates the belt 36 in the direction of the arrow E (FIGS. 2 and 4). The discharge claw 37 moves to a standby position slightly below the sheet bundle P2 shown in FIG. 4, and waits here.
[0031]
When the binding (stapling) operation on the sheet bundle P2 is completed, the operation of the drive motor 38 causes the belt 36 to start operating in the direction of the arrow E again, and the discharge claw 37 is raised. As a result, the trailing edge 31 of the bound sheet bundle P2 is lifted by the discharge claw 37. In this manner, the sheet bundle P2 is conveyed upward, and is discharged onto the sheet discharge tray 12 by the above-described sheet discharge roller pair 11 as shown by the arrow C. Even after the discharge claw 37 has risen and the discharge claw 37 has left the trailing edge of the sheet bundle, the discharge claw 37 continues to rotate with the belt 36 in the direction of arrow E to reach the position shown in FIG. Then, in order to convey the next sheet bundle, it moves to the standby position shown in FIG. 4 and repeats the above operation.
[0032]
By the way, the side located when an operator (not shown) operates the paper processing apparatus is the front side of the paper processing apparatus main body 1, that is, the front side, and FIG. 1 is a front view of the paper processing apparatus viewed from the front side. is there. A front door (not shown) is supported on the front side of the sheet processing apparatus main body 1 so as to be openable and closable. Opening the front door enables repair and maintenance of each element inside the sheet processing apparatus main body 1. Maintenance work can be performed. In FIGS. 4 and 5, the front side of the sheet processing apparatus main body 1 is denoted by reference F, and the back side opposite thereto is denoted by reference R (the same applies to FIG. 6).
[0033]
As can be seen from these figures, the stapling device 32 is arranged so as to bind a portion of the sheet bundle P2 stacked on the staple tray 13 on the rear side R of the sheet processing device main body. In the illustrated sheet processing apparatus, this configuration is employed for the following reasons.
[0034]
The paper discharged from the image forming apparatus main body may be discharged with the image surface facing upward or discharged with the image surface facing downward. In other words, in the illustrated example, the paper is discharged from the image forming apparatus main body to the back side, and each paper P stacked on the staple tray 13 has its image surface facing the front surface 13A of the staple tray 13. Here, in general, for example, when an A4 size sheet bundle is placed vertically and the surface on which the image is formed is viewed, the upper left corner is stapled and bound. For this reason, in the illustrated example, the sheet bundle P2 stacked on the staple tray 13 so that A4 size paper that is discharged from the image forming apparatus main body and that is fed sideways, for example, can be bound at a predetermined position. Is stapled by the stapling device 32. For this reason, it is necessary to arrange the stapling device 32 at a position on the rear side R in the sheet processing device main body 1 so that the stapling device performs a predetermined stapling operation.
[0035]
However, when the stapling device 32 is disposed on the back side in this manner, as described above, when performing maintenance work such as repairing the stapling device 32 or replenishing the stapling device with the stapling device 32, the operator is not allowed to perform the maintenance work. In this case, the work must be performed with the hand extended from the near side to the far side of the sheet processing apparatus main body 1 to perform the work, and the workability is reduced. Therefore, it is desired that such a defect is eliminated, and that the stapling apparatus 32 is configured to enhance the workability in the maintenance work even when the stapling apparatus 32 is disposed on the back side in the main body of the sheet processing apparatus.
[0036]
On the other hand, also in this type of sheet processing apparatus, it is necessary to enable the stapling apparatus 32 to bind substantially the same location to the sheet bundle P2, and to increase the binding position accuracy.
[0037]
The paper processing apparatus of the present embodiment is configured as follows to simultaneously satisfy the above two requirements.
[0038]
First, as shown in FIGS. 4 and 5, the reference fence 15 is disposed on the back side R of the sheet processing apparatus main body 1 relative to the jogger fence 16, and the stapling device 32 is connected directly or as shown in the example shown. The stapling device 32 is fixedly connected to the reference fence 15 via a member 43 (FIG. 4), and is configured to operate integrally with the reference fence 15. The relative position between the reference fence 15 and the stapling device 32 is fixed.
[0039]
As described above, the reference fence 15 moves to the reference position corresponding to the width of the sheet and stops, and in this state, the sheet is aligned, and then the stapling device 32 performs the sheet bundle binding operation. However, with the above configuration, the stapling device 32 moves with the movement of the reference fence 15. For this reason, no matter what reference position the reference fence 15 occupies, the binding position with respect to the sheet bundle is unchanged, and the binding position accuracy is reliably increased. Notches (not shown) are formed in the staple tray 13 so that the staple device 32 does not interfere with the staple tray 13 when the staple device 32 operates together with the reference fence 15.
[0040]
The first feature of the paper processing apparatus of the present embodiment is the above-described point. The second feature of the present embodiment is as follows.
[0041]
As described above, the reference fence 15 occupies the reference position corresponding to the sheet width size, and stands by at a standby position different from the reference position when the sheet processing apparatus stops operating. . FIG. 6 is an explanatory diagram in which the standby position of the reference fence 15 is indicated by reference symbol G and the reference position is indicated by H, and is a diagram of the reference fence 15 viewed from the right side in FIG. As can be seen from this figure, the reference fence 15 of the present example is configured to move to the home position indicated by the symbol I in addition to the reference position H and the standby position G. Further, the standby position G of the reference fence 15 is set closer to the front side F of the paper processing apparatus main body than the reference position H of the reference fence 15, and the home position I is set to the innermost side R of the paper processing apparatus main body. ing.
[0042]
A fence sensor including a photo sensor 44 for detecting that the reference fence 15 has reached the home position is fixedly arranged on a back side plate (not shown) constituting a back side support frame of the sheet processing apparatus main body. Further, a tongue-shaped feeler 45 is fixed to the surface facing the rear side R of the reference fence 15.
[0043]
When the paper processing apparatus stops operating, such as when the power of the paper processing apparatus is turned off, the reference fence 15 occupies the standby position G, but the power of the paper processing apparatus is turned on. In this state, as described above, when the image forming operation is started in the image forming apparatus main body, the reference fence 15 is moved from the standby position G to the arrow in FIG. 6 by the operation of the fence drive motor 23 shown in FIG. As shown by J, the robot moves to the innermost home position I. At this time, the feeler 45 of the reference fence 15 blocks between the light emitting element and the light receiving element 4 of the photo sensor 44, and it is detected that the reference fence 15 has reached the home position I. From this point, the fence drive motor 23 rotates by the number of input pulses corresponding to the width of the paper sent from the image forming apparatus main body to the paper processing apparatus main body 1, whereby the reference fence 15 is turned into an arrow in FIG. As indicated by K, the sheet moves to a reference position corresponding to the width size of the sheet and stops.
[0044]
At this time, the jogger fence 16 occupies the above-described alignment operation start position, and when the paper P is fed between the fences 15 and 16, the jogger fence 16 is moved by the jogger drive motor 24 (see FIG. The paper is aligned by moving to the alignment position by the operation of 5).
[0045]
When the aligning operation for all the sheets is completed, the binding operation to the sheet bundle by the stapling device 32 is completed, and the sheet bundle is discharged from the staple tray 13, the reference fence 15 moves to the home position I again, and from there. The fence drive motor 23 operates for a predetermined number of pulses, whereby the reference fence 15 returns to the standby position G and stops here.
[0046]
As described above, the reference fence 15 occupies the standby position G at the time other than the time of the sheet alignment operation and the time of the preparation. Therefore, when performing maintenance work such as replenishing the stapling device 32 with staples or checking the stapling device 32, the stapling device 32 always occupies the standby position G. At this time, as described above, the standby position G Each of the reference positions H is set on the front side F of the sheet processing apparatus main body. As described above, when the maintenance work is performed on the stapling apparatus, the stapling apparatus 32 occupies the standby position G which is much closer to the front side F of the sheet processing apparatus main body 1 than the reference position H, that is, the front door side. Therefore, the operator can open the front door, put his / her hand from the near side of the sheet processing apparatus main body 1, and can easily perform maintenance work on the stapling apparatus 32.
[0047]
The distance L between the reference position H of the reference fence 15 and the standby position G is preferably as large as possible provided that the reference fence 15 and the stapling device 32 do not interfere with other elements, and is set to, for example, about 10 cm. You. When the distance L is increased as described above, when the reference fence 15 moves to the standby position, a large notch is formed in the staple tray so that the staple device 32 shown in FIG. 5 does not interfere with the staple tray 13 or the discharge claw 37. It is natural that the location of the stapling device 32 and the discharge claw 37 should be considered.
[0048]
In the example shown in FIG. 6, the reference fence 15 at the standby position G is temporarily moved to the home position I, and then the reference fence 15 is brought to the reference position H, for the following reason.
[0049]
In general, if the sensors are arranged at a central portion between the near side and the far side of the sheet processing apparatus main body 1, the configuration such as the arrangement of the harness becomes complicated. For this reason, the sensor 44 of the present example is also disposed on the back side plate of the sheet processing apparatus main body 1, and once moves the reference fence 15 at the standby position G to the home position I, and based on the position I as a predetermined pulse number. The reference fence 15 is moved to the predetermined reference position H by operating the fence drive motor 23 by the distance. Even with this configuration, if a stepping motor is used as the fence drive motor 23, the amount of rotation can be controlled by the number of input pulses. Therefore, the reference fence 15 can be moved to the predetermined position G by using only one sensor 44. , H and position it correctly.
[0050]
Instead of the above-described configuration, the reference position G of the reference fence 15 can be used as its home position. That is, when the reference fence 15 reaches the reference position G, this is detected by a sensor (not shown) and the reference fence is stopped. When the reference fence 15 is brought to the reference position H from this state, the fence drive motor 23 is rotated by the number of pulses corresponding to the width of the sheet to move the reference fence 15 to the reference position H. After the paper alignment operation is completed, the reference fence 15 is returned to the standby position G, which is the home position, and the standby is made here.
[0051]
The jogger fence 16 also waits at a home position other than the alignment operation start position and the alignment position described above, and operates the jogger drive motor 24 from the home position by a predetermined number of pulses corresponding to the width of the paper. The jogger fence 16 may be configured to operate up to the alignment operation start position. In this case, it is desirable to set the home position further to the front side F of the sheet processing apparatus main body than the aligning operation start position. This makes it possible to further set the standby position of the reference fence 15 closer to the front side of the sheet processing apparatus main body 1.
[0052]
【The invention's effect】
According to the present invention, since the reference fence is located on the back side of the sheet processing apparatus main body with respect to the jogger fence and the stapling device is fixedly connected to the reference fence, it is possible to enhance the binding position accuracy with respect to the sheet bundle.
[0053]
Moreover, the stapling device is arranged to bind a portion of the sheet bundle stacked on the staple tray on the back side of the sheet processing device main body, but the standby position of the reference fence is higher than the reference position of the reference fence. Since it is set on the near side of the sheet processing apparatus main body, when performing maintenance work on the stapling apparatus from the near side of the sheet processing apparatus main body, the work can be easily performed.
[Brief description of the drawings]
FIG. 1 is a front view of the inside of a sheet processing apparatus when viewed from the near side, showing a reference fence on the back side.
FIG. 2 is an enlarged front view showing a part of FIG. 1;
FIG. 3 is an enlarged front view showing a part of FIG. 2;
FIG. 4 is a perspective view of a staple tray and related components.
FIG. 5 is a perspective view of the staple tray and its related elements when viewed from the opposite side to FIG. 4;
FIG. 6 is an explanatory diagram schematically showing each position of a reference fence.
[Explanation of symbols]
1 Paper processing device body
13 Staple tray
15 Standard fence
16 Jogger fence
17A One side edge
18A The other side edge
32 Staple device
F Front side
G standby position
H Reference position
P paper
P1 paper
P2 paper bundle
R back side
W width direction

Claims (1)

A staple tray for feeding sheets ejected from the image forming apparatus main body one by one and stacking the sheets, a sheet aligning device for aligning each sheet sent to the staple tray in its width direction, and aligned sheets A stapling device that binds the bundle with staples, and a paper discharge device that discharges the bound paper bundle from the staple tray; A reference fence operably supported between a reference position remote from the outside and a standby position different from the reference position, and a reference fence remote from the other side edge of the sheet fed to the staple tray. There is a gap between the alignment start position and the alignment position where the paper is pressed against the reference fence stopped at the reference position to align the paper. Has capable supported the jogger fences, the stapling apparatus, in the sheet processing apparatus which is arranged to bind the sites of the sheet processing apparatus main body rear side of the sheet bundle stacked in the staple tray,
The reference fence is disposed on the back side of the sheet processing apparatus main body with respect to the jogger fence, and the stapling device is fixedly connected to the reference fence so as to operate integrally with the reference fence, and A sheet processing apparatus, wherein the standby position of the reference fence is set closer to the paper processing apparatus body than the reference position of the reference fence.

Images