JPH05147817A - Sorter with paper sheet handling function - Google Patents

Abstract

PURPOSE:To prevent bending of a bin at the time of pressing and fixing transfer paper sheets loaded on the bin so as to conduct paper sheet handling. CONSTITUTION:A sorter comprises bins 16 provided with a rotatable stopper 25 at the rear end thereof, a pressing means 86 for pressing the position other than the rear end portion of the bin 16 to press and fix transfer paper sheets loaded on the bin 16, a stopper rotating means for rotating the stopper to open and close the rear end portion of the bin 16, and a paper sheet handling means 28 for conducting designated paper sheet handling to the trailing end sides of transfer paper sheets loaded on the bin. The sorter 14 has a paper sheet handling function for pressing and fixing transfer paper sheets loaded on the bin 16, rotating the stopper 25 to open the rear end portion of the bin 16 and conducting designated paper sheet handling to a transfer paper sheet exposed from the rear end portion of the bin, and includes a bending preventing means which comes into contact with the base substantially facing to the pressing position by the pressing means 86 for the pin 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sorter with a paper processing function capable of performing a predetermined paper processing on one end of a transfer paper loaded in a bin of a sorter.

[0002]

2. Description of the Related Art Conventionally, in an image forming apparatus such as a copying machine, a sorter for transferring the same original onto a plurality of transfer papers and discharging the transfer papers into a plurality of bins is used as a sorter. Are known. Further, recently, a sorter having a so-called paper processing function of stapling one end of the transfer paper discharged into each bin has also been proposed.

In such a sorter having a sheet processing function, for example, a notch is provided at the rear end of a bin, and a stapler is brought close to one corner of the transfer sheet exposed from the notch to perform stapling.

[0004]

By the way, the conventional bin applied to the sorter with a sheet processing function has a cutout portion at the rear end of the bin, and the staple processing is performed only on one corner of the transfer paper exposed from the cutout portion. Therefore, the stapling process cannot be performed at an arbitrary position on one end of the transfer paper.

In order to solve this problem, therefore, a stopper provided at the rear end of the bottle is constructed to be rotatable, and the transfer paper is pressed and fixed to prevent the stopper from falling when the stopper is opened. A method is conceivable in which a paper processing device such as a stapler is moved in the width direction of the bin to the rear end of the transfer paper exposed from the end side to perform predetermined paper processing.

However, this method has another problem that the bin is bent downward due to the pressing and fixing of the transfer paper, and the paper is processed in the state where the transfer paper is bent downward. Also, the shape of the bottle may be deformed downward due to a large number of pressing operations,
Bottle life is reduced. It is possible to prevent the bending of the bottle by thickening the bottom plate of the bottle or forming it with metal or hard resin, but in this way, the shape of the bottle becomes large and the weight becomes heavy, There are inconveniences that it is difficult to move the bottle up and down, and the sorter becomes large.

The present invention has been made in view of the above background and problems, and is a sorter with a paper processing function capable of preventing the bending of the bin and properly performing the paper processing at an arbitrary position at one end of the transfer paper. The purpose is to provide.

[0008]

In order to solve the above-mentioned problems, the present invention aims to press and fix a bin having a rotatable stopper at its rear end and a transfer sheet loaded in the bin. A pressing unit that presses a position other than the rear end of the bin, a stopper rotating unit that rotates the stopper to open and close the rear end of the bin, and a predetermined unit on the rear end side of the transfer sheets stacked in the bin. And a sheet processing means for performing the sheet processing for fixing the transfer sheets stacked in the bin, and rotating the stopper to open the rear end portion of the bin, exposing the rear end portion of the bin. A sorter with a paper processing function for performing a predetermined paper processing on the transfer paper, which is provided with a deflection preventing means that comes into contact with a bottom surface of the bin substantially corresponding to a pressing position of the pressing means. In addition, it is preferable that the deflection preventing means is formed of a cylindrical member with which the outer peripheral surface is in contact.

Further, the stopper is adapted to be opened and closed by rotating the stopper rotating means, and the deflection preventing means is located below the bin and substantially corresponds to a pressing position by the pressing means. Of the stopper rotating means, and a rod member provided in parallel with the rotating shaft of the stopper rotating means and a rod member provided in parallel with the rotating shaft at a predetermined interval. The rod member may be brought into contact with the bottom surface of the bottle when the rod member is rotationally driven in synchronization with the driving and the stopper is rotated to open the rear end portion of the bottle.

[0010]

According to the first aspect of the present invention, when the transfer paper loaded in the bin is subjected to the paper processing, the transfer paper is first pressed and fixed to the bin side by the pressing means, and then the stopper is set in this state. When opened, one end of the transfer paper is exposed from the rear end of the bottle. At this time, since the bending prevention means is in contact with the bottom surface of the bottle, the pressing force of the pressing means is offset, and the bending of the bottle is prevented. Then, the paper processing means performs predetermined paper processing on a predetermined position at one end of the transfer paper.

According to the second aspect of the present invention, when the transfer sheet is pressed toward the bin by the pressing means, the outer peripheral surface of the cylindrical member comes into contact with the bottom surface of the bin facing the pressed position. As a result, the pressing force of the pressing means is offset and the bending of the bottle is prevented.

According to the third aspect of the present invention, when the transfer paper stacked on the bin is subjected to paper processing, first,
The transfer sheet is pressed to the bin side by the pressing means, and then the stopper rotating means is rotated in this state so that the stopper is rotated and the rear end portion of the bottle is opened. At this time,
When the rotation shaft of the deflection preventing means is rotationally driven in conjunction with the driving of the stopper and the rear end portion of the bottle is opened, the rod member comes into contact with the bottom surface of the bottle facing the position pressed by the pressing member, This offsets the pressing force of the pressing means and prevents the bottle from flexing.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an image forming apparatus equipped with a sorter having a paper processing function according to the present invention will be described with reference to the drawings. Figure 2
2 is an external view showing the entire image forming apparatus 1. The image forming apparatus 1 includes a first housing 2 provided with an image forming means for forming an image on a transfer sheet, and a sheet processing unit for performing processing such as sorting, punching, stapling, etc. for sorting the transfer sheet on which an image is formed. The second housing 14 is provided.

A contact glass (not shown) for placing a document is provided at the center of the upper surface of the first housing 2. Further, inside the first housing 2, a scanning optical system for optically scanning a document to expose a document image, a photosensitive drum, and each member for image formation disposed around the photosensitive drum. Each component such as an image forming unit and a transfer paper conveying system is disposed.

On the upper part of the first housing 2, there is provided an automatic document feeding means 3 for automatically feeding a document. The automatic document feeder 3 includes a document placing section 4, a document loading section 5, a document feeding section 6, and a document unloading section 7, and the documents placed on the document placing section 4 are automatically loaded one by one. The document is transported from 5 to a predetermined position on the contact glass by the document transport unit 6, and is transported to the document transport unit 7 after the copying is completed.

On the front side of the upper portion of the first housing 2, there is provided an operation panel 12 including various switches such as a copy switch and a switch for instructing the number of copies, and a display section. The left side of the operation panel 12 is provided. In the sorter 14
There is provided a selection key 13 for selecting the process. The selection key 13 can be used to select whether or not post-processing such as sorting and stapling and punching is required.

On the right side of the first housing 2, cabinets 9, 10 and 11 for accommodating transfer papers are provided so that transfer papers of different sizes can be set respectively.

The document to be copied is placed at a predetermined position on the contact glass and optically scanned by the scanning optical system to expose the document image. The latent image formed on the surface of the photoconductor drum by this exposure operation is developed into a toner image by the image forming means, and the visualized original image is transferred onto the transfer paper conveyed from the cabinets 9 to 11. Image formation is performed. Then, the transferred transfer paper is fixed and then discharged to the sorter 14.

Further, a paper discharge unit 17 is formed on the upper part of the second housing 14, and a sorter 15 for sorting the transfer paper on which an image is formed and a punch or staple for the transfer paper are provided inside the paper discharge unit 17. And a sheet processing unit. The sorter 15 is provided below the paper discharge unit 17 and has a plurality of bins 16 arranged in a step shape. Then, the transfer paper on which the image is formed is
When sorting, the bottles 16 are sequentially discharged,
When not sorted, the sheet is discharged to the sheet discharge unit 17. The paper processing unit can be pulled out of the housing by opening the opening / closing panel 14a as described later.

Next, the internal structure of the second housing 14 will be described. FIG. 1 is a side view showing the internal configuration of the second housing 14. A carry-in port 14 for guiding the transfer paper discharged from the first housing 2 side into the second housing 14 at an appropriate position on one side portion of the second housing 14.
b is provided, and on the downstream side of the carry-in port 14b, a transport path 14 for transporting the transfer paper to the document discharge section 17 or the sorter 15.
c and 14d are provided.

Further, the sorter 15 is arranged on the downstream end side of the conveying path 14d, and the sheet processing unit 30 is arranged below the conveying paths 14c and 14d.

The sorter 15 is provided with a spiral groove 24 at a predetermined pitch on the outer periphery as an elevating member for the bottle 16.
A pair of cylinders 23 in which the holes are formed are provided upright.

A base end portion 23a of the column 23 is connected to a driving motor 230 provided at a lower portion of the sheet processing unit 30 via a timing belt 231, a bevel gear 232, 233 and a timing belt 234. The cylinder 230 is rotationally driven by the motor 230.

Further, at the base end 23a of the column 23,
A rotation angle detection device including a pulse plate 235 and a detection sensor 256 is provided, and the rotation amount of the column 23 is detected by this.

The bin 16 is composed of a flat plate portion 26 on which the transfer paper is placed and an L-shaped stopper 25 which regulates the fall of the transfer paper and which aligns one end side with the stopper 25.
As will be described later, the flat plate portion 26 is connected through the connecting portion 27 so that one end portion of the placed transfer sheet can be subjected to predetermined sheet processing.
It is releasably connected to.

FIG. 2 is a plan view showing the structure of the connecting portion 27 of the bottle 16, and FIG. 3 is a perspective view showing the structure of the connecting portion 27.

Engaging portions 261 are provided on both sides of the rear end of the flat plate portion 26 of the bottle 16, and a fourth pin 262 is provided at the tip of the engaging portion 261 so as to project outward. ..

On the other hand, projecting pieces 252 are provided on both ends of the end of the horizontal plate portion 251 of the stopper 25 along the side surface, and in parallel with the horizontal plate portion 251, the projecting pieces 252 are provided at appropriate positions inside the projecting piece 252. Engaging claws 253 that engage with the engaging portions 261 of the flat plate portion 26 are provided in a protruding manner. Further, a fifth pin 254 is provided at the tip of the projecting piece 252 so as to project outward, and the base of the projecting piece 252 has an elongated hole 255 extending forward and backward.
Has been drilled. In addition, as shown in FIG.
On one side of the rear end of No. 5, a cutout portion 251a is formed by cutting out a part thereof for the reason described later.

The stopper 25 is provided with the fourth pin 26.
2 is fitted in the elongated hole 255, and the engaging claw 253 is engaged with the engaging portion 261 to be attached to the rear end portion of the flat plate portion 26. Further, a spring 271 is provided between the fourth pin 262 and the fifth pin 254, and the stopper 25 is biased by the spring 271 so as to be separated from the flat plate portion 26, whereby the engaging claw 253 is provided. The engagement between the engaging portion 261 and the engaging portion 261 is retained.

The stopper 25 is biased by a biasing means such as a coil spring (not shown) in a direction to rotate counterclockwise (direction D in the figure) about the fourth pin 262 as a fulcrum. Even when the engagement between the engagement claw 253 and the engagement portion 261 is released, the stopper 25 is rotated clockwise by its own weight so that the rear end portion of the bottle 16 is not naturally opened. ..

Therefore, the stopper 25 is moved to the flat plate portion 26 side by a predetermined distance to move the engaging claw 253 and the engaging portion 26.
After the engagement with 1 is released, the fourth pin 262 is rotated about the fulcrum to open and close.

With the above structure, when the bottle 16 is in the normal sorting position, the stopper 25 of the bottle 16 is closed, and the engaging claw 253 has the engaging portion 26.
1, the stopper 25 is rotated by the weight of a large number of transfer sheets to open the rear end of the bottle 16,
The transfer paper does not drop into the second housing 14.

Further, when the transfer paper is inserted into the bin 16 in order to process the paper manually, the stopper 25
Does not rotate halfway, and the paper alignment of the transfer paper to be processed is not disturbed. Furthermore, even if the operator accidentally puts his / her hand from the tip side of the bottle 16, the bottle 1
Since the rear end portion of 6 does not open, the paper alignment state of the transfer paper can be maintained.

The engaging claw 253 and the engaging portion 261 are also provided.
Is a lock mechanism when the stopper 25 is closed, and is not limited to the above configuration.

For example, an engaging piece is provided so as to project inward at an appropriate position on the lower surface of the projecting piece 261, and a notch is formed at an appropriate location on the side of the flat plate portion 26 so that the engaging piece engages with the bottom surface of the flat plate portion 26. To lock the stopper 25, while the stopper 25
It is also possible to move the engaging position of the engaging piece to the notch by moving the plate in parallel with the flat plate portion 26 to release the lock.

Further, in the above embodiment, when the stopper 25 is moved in the direction separating from the flat plate portion 26, the engaging claw 253 is formed.
Is engaged with the engaging portion 261 so that the stopper is locked, and when the bin 16 is moved to the sheet processing device 28 side to perform sheet processing, the stopper is moved to the flat plate portion 26 along with this movement. Although the stopper 25 can be released from the locked state by relatively moving the stopper 25 toward each other, when the stopper 25 moves toward the flat plate portion 26, the engaging claw 253 engages with the engaging portion 261. You may do so.

After the bin 16 moves to the sheet processing position, the engagement of the engaging claw 253 may be released and the stopper 25 may be rotated to open the rear end of the bin 16.

Returning to FIG. 1, a first pin 20 is provided on both sides of the tip of the flat plate portion 26, and a second pin 21 and a third pin 22 are provided at appropriate positions on both sides of the rear end. Are provided at a predetermined interval (see FIG. 2). A roller 21a is rotatably provided at the tip of the second pin 21. In addition, it is preferable to provide a bearing on the roller 21a. Each bin 16 has a second pin 21.
The rollers 21a are fitted into the grooves 24 of the column 23 and are provided in the sorter 15 in a stepped shape.

As described above, since the roller 21a is provided at the tip of the second pin 21 to reduce the frictional force between the second pin 21 and the groove 24, the cylinder 23 is rotated to rotate the bottle. When raising and lowering 16, the second pin 21 smoothly moves relative to the groove 24 even when a large load is placed due to a large number of transfer sheets placed, and the bin 16 can be easily raised and lowered. it can.

Further, as will be described later, the bin 16 can be detached from the groove 24 of the column 23 and slid (retracted) to the sheet processing unit 30 side when performing sheet processing of the transfer sheet. .. Also in this case, the second pin 2
1, the guide rail (not shown) can be smoothly moved via the roller 21a at the tip end so that the bottle 16 can be easily slid.

The first pin 20 is engaged with a guide groove provided on both side plates of the sorter 15 so as to be inclined,
The bottle 16 is tilted at a predetermined angle and assists the sliding of the bottle 16. The transfer paper discharged due to the inclination of the bin 16 slides down to the rear end side and contacts the stopper 15, so that one end of the transfer paper is aligned.

The third pin 22 is an engaging pin for engaging the restricting portion 581 (see FIG. 7) of the action plate 58, which will be described later, to disengage the bottle 16 from the column 23.
The sorter 15 is designed to move up and down in conjunction with the lifting operation of the bottle 16.

Next, the structure of the cylinder 23 will be described. FIG. 4 is a side view showing the structure of the column 23.
The groove 24 of the cylinder 23 has a region 241 with an inclination angle α and a region 242 with an inclination angle β (> α).
Then, each bin 16 is moved up and down step by step at the above-mentioned predetermined intervals. In addition, the area 242 is
It is provided at a position facing the leading end of the transport path 14d (the position where the transfer paper is ejected), and the space between the bins 16 is the area 241.
Since the gap is wider than the interval in (3), the sheet can be easily discharged to the bin 16.

Further, on the lower edge surface of the groove 24 which is the retreat start position (specific position) B of the second pin 21 of the bin 16, for example, the bin 1 in the retreat direction (direction C in the figure).
Notch 243 inclined at an angle γ equal to the inclination angle of 6
(See FIG. 5) are formed. That is, when performing sheet processing, the second pin 21 moves from the retreat start position B to the guide rail 60, which will be described later, and the guide pin 60 is moved to the guide rail 60.
The paper is retracted to the sheet processing position along the line. At this time, the second pin 21 retracts along the inclination of the notch 243 and is smoothly separated from the groove 24.

On the other hand, the groove 24 facing the notch 243.
A notch 244 is formed on the upper edge surface of the second pin 21 to smoothly move the second pin 21 from the guide rail 60 to the groove 24 when the column 23 returns to the retreat start position B from the sheet processing position. It can be done.

The roller 21a provided at the tip of the second pin 21 of the bottle 16 is fitted between the rails 210a and 210b which are erected in parallel in parallel with the column 23, and separates from the groove 24 during rotation. It is regulated not to. In addition, the rails 210a and 210b are located at the backward start position B
4 is notched (not shown in FIG. 4), and as shown in FIG. 6, the restriction portion 581 of the action plate 58, which will be described later, is movably arranged in the notched portion of the rail 210b on the backward side of the bin 16. It is set up. The structure of the restriction portion 581 will be described later.

In the above structure, the cylinder 23 is the motor 2
One rotation is performed by 30 in synchronization with the discharge timing of the transfer paper, whereby the bin 16 is moved up or down one step at a pitch of the groove 24, and the transfer paper is sorted. Further, when copying and sorting are completed and a predetermined sheet processing is performed on each transfer sheet, the bin 16 on which the transfer sheet to be processed is placed is located at a specific position (retraction start position) of the column 23. While being moved up and down to B, it is moved back along the inclination by a predetermined distance (in the lower right direction in FIG. 1) and moved to the sheet processing position.

Returning to FIG. 1, the paper processing unit 30 includes a paper processing device 28 for performing a predetermined process on the transfer paper sorted in the bin 16, and a support frame 2 for mounting the paper processing device 28.
9, and the support frame 29 is mounted on the base so as to be capable of reciprocating in the width direction of the paper (the depth direction of the drawing). Further, the support frame 29 has a mounting base 44 that can reciprocate in the inclination direction of the bottle 16, and the mounting base 44
The sheet processing device 28 is detachably attached to the top. Then, by combining the reciprocating movement of the support frame 29 in the depth direction of the drawing and the reciprocating movement of the mounting base 44 in the inclination direction, a predetermined position can be set at an arbitrary position on one side of the transfer sheet placed on the bin 16. It is designed to be processed.

Further, 86 is for pressing and fixing the transfer paper placed on the bin 16 to the flat plate portion 26 of the bin 16 when the stopper 25 of the bin 16 is opened to prevent the transfer paper from falling. It is a paper presser.

The paper processing unit 30 and the paper retainer 8
The detailed configuration and operation of 6 will be described later.

FIG. 7 is a view showing the moving mechanism of the bottle 16. In the figure, 51 is a motor for moving the bottle 16 in the front-back direction, 52 is a worm wheel, 53, 54, 5
5 and 56 are gears, and these gears 53, 54, 55 and 5
A chain wheel 57 is hung on the 6. The rotational force of the motor 51 passes through the worm wheel 52 and the gear 53.
Is further transmitted to each gear via the chain wheel 57.

58 is a chain wheel 57 and a connecting portion 5
9 is a working plate connected by 9. A restricting portion 581 that is bent toward the bin 16 side is formed at the front end of the action plate 58, and when the bin 16 moves to the retracting start position B of the column 23 as described above, the restricting member 581 moves to the first position. Pin 2 of 2
And the third pin 22 (FIG. 6).
reference).

During the sorting process, the action plate 58 is detached from the groove 24 by bringing the second pin 21 of the bottle 16 moved to the retreat start position B into contact with the regulating portion 581 of the action plate 58. Regulate not to. Further, when the transfer paper is subjected to a predetermined process, the bin 16 is moved between the retreat start position B and the paper processing position by pushing the second pin 21 or the third pin 22 by the regulating portion 581. I am trying to let you.

Reference numeral 60 is a guide rail for guiding the moving direction of the action plate 58 and the second pin 21. The guide rail 60 is inclined at an inclination angle γ equal to the inclination angle of the bottle 16 so that the second pin 21 can be smoothly moved from the groove 24 to the guide rail 60.
Reference numerals 61 and 62 denote first and second photo-interrupters which detect the presence or absence of the action plate 58 and regulate the moving range of the action plate 58.
And a second sensor.

Reference numeral 71 is an eccentric cam having an abutting portion 71a formed at a proper position on the outer peripheral portion. The eccentric cam 71 corresponds to the bin 16
When the sheet retracts to the sheet processing position, the engaging claw 253 of the stopper 25 is released from the engaging portion 261 of the flat plate portion 26, and the stopper 25 is rotated clockwise to open the rear end portion of the bin 16. is there.

Reference numeral 73 is a cylindrical stay rotatably provided on the rotating shaft 72 of the eccentric cam 71,
The lower surface of the bin 16 contacts the outer peripheral surface of the stay 73 when the bin 16 is retracted to the sheet processing position. The stay 73 prevents the transfer paper placed on the bin 16 from being bent when the transfer paper is pressed by the paper presser 86, and assists in fixing the transfer paper by the paper presser 86.

Further, 74 is a motor for rotationally driving the eccentric cam 71, and 75, 76 and 77 are worm wheels and gears for transmitting the driving force of the motor 74 to the rotary shaft 72 of the eccentric cam 71, respectively. And a chain wheel. Reference numeral 78 is a pulse plate that rotates integrally with the gear 76, and reference numeral 79 is a third sensor including a photo interrupter or the like that detects the amount of rotation of the gear 76 by the pulse plate 78. The release amount of the stopper 25 is set to a predetermined amount by the third sensor 79.

In the above structure, when the sheet processing device 28 performs a predetermined process, when the motor 51 is driven to rotate, the gear 53 is rotated through the worm wheel 52, and the chain is attached to the gears 53, 54, 55 and 56. The wheel 57 rotates counterclockwise (direction E in the figure). By the rotation of the chain wheel 57, the connecting portion 5
The action plate 58 connected by 9 begins to retreat (lower right direction in FIG. 7) along the guide rail 60.

At this time, the regulating portion 581 of the action plate 58 is
The third pin 22 of the bottle 16 is pushed to disengage the second pin 21 of the bottle 16 from the groove 24 of the cylinder 23. Bin 16
After separating from the column 23, moves along the guide rail 60 as the action plate 58 moves.

When the action plate 58 moves backward by a predetermined distance, the action plate 58 is detected by the second sensor 62, and the motor 51 is stopped based on the detection result. As a result, the bin 16 also moves backward by a predetermined distance and is stopped at the sheet processing position (state of FIG. 8).

On the other hand, when the predetermined processing by the sheet processing device 28 is completed and the bin 16 is returned to the original state, the motor 5 is used.
1 is rotationally driven in the reverse direction to rotate the chain wheel 57 in the reverse direction. By the reverse rotation of the chain wheel 57, the action plate 58 starts to move forward (upper left direction in FIG. 8) along the guide rail 60.

As the working plate 58 moves forward, the bottle 1
The second pin 21 of No. 6 is pushed by the regulating member 581,
6 moves forward. Then, when the action plate 58 advances by a predetermined distance, the action plate 58 is detected by the first sensor 61, and the motor 51 is stopped based on the detection result.
As a result, the bin 16 also moves forward by a predetermined distance and is stopped at the backward start position B (state in FIG. 7).

FIG. 9 is a schematic diagram showing an example of the paper pressing mechanism. In the figure, reference numeral 81 is a paper pressing drive motor, and 82, 83, 84 and 85 are gears, and the rotational force of the motor 81 is transmitted to the gears 84 and 85 through the gears 82 and 83. Reference numeral 86 is a paper retainer that presses and fixes the transfer paper, and 88 is a link rod that connects the gear 85 and the paper retainer 86. The upper end of the link rod 88 is rotatably attached to the side surface of the gear 85 at an eccentric position. Reference numeral 89 is a guide rail for guiding the moving direction of the connection point 92 between the link rod 88 and the paper retainer 86, and 87 is the connection point and the paper retainer 86.
A spring provided between and is used to apply a suitable pressing force according to the number of sorted transfer sheets.

Numeral 90 is a pulse plate which rotates integrally with the gear 84, and numeral 91 is a fourth sensor which is composed of a photo interrupter or the like for detecting the rotation amount of the gear 84 by the pulse plate 90.

In the above structure, when the motor 81 is rotated in a predetermined direction, the gear 85 is rotated clockwise (direction G in the figure) through the gears 82, 83, 84, and is thereby connected by the link rod 88. The paper retainer 86 descends along the guide rail 89. On the other hand, the pulse plate 90 also rotates integrally with the rotation of the gear 84, and when the pulse plate 90 rotates by a predetermined amount, it is detected by the fourth sensor 91, and the motor 81 is driven based on the detection result. Be stopped. As a result, the paper presser 86 is lowered by a predetermined amount.

When the paper presser 86 descends to the transfer paper placed on the bin 16 (not shown), the paper presser 86 comes into contact with the transfer paper and its lowering operation is restricted, while the spring 87 is urged downward.
As a result, the transfer paper is pressed and fixed to the bin 16 side.

On the other hand, when the motor 81 is further rotated, the paper retainer 86 connected by the link rod 88 is moved to the guide rail 8
9, and the pressing operation of the transfer paper is released. When the gear 85 makes one full rotation, the rotational position is detected by the pulse plate 90 and the fourth sensor 91,
The drive of the motor 81 is stopped based on the detection result.

Next, the operation of releasing the stopper 25 so that a predetermined process can be performed on the transfer paper which is pressed and fixed will be described with reference to FIGS.

FIG. 10A is a view showing a state where the bin 16 is moving backward. Also, FIG.
It is a diagram showing a state where the bin 16 is retracted to the sheet processing position, and FIG. 6C is a diagram showing a state where the stopper 25 of the bin 16 is being opened at the sheet processing position.

As described above, the bin 16 moves to the backward start position B.
When it is, the stopper 25 of the bottle 16 is closed, and moreover, the engaging claw 253 is engaged with the engaging portion 261 of the flat plate portion 26 and locked to the flat plate portion 26.

As shown in FIG. 10 (a), the bin 16 is retracted from the retract start position B with the stopper 25 locked to the flat plate portion 26, and is moved to the sheet processing position (FIG. 10 (a)). the second pin 21 of the bin 16 as shown in FIG.
Comes into contact with the contact portion 71a of the eccentric cam 71, and the stopper 25
Moves forward in the direction G relative to the flat plate portion 26, and the engaging claw 253 is released from the engaging portion 261 of the flat plate portion 26.

After the bin 16 is stopped at the paper processing position, the paper presser 86 is lowered at a predetermined timing to press and fix the transfer paper placed on the bin 16 as described above. At this time, the transfer paper and the flat plate portion 26 of the bin 16 are pressed downward. However, since the stay 73 is in contact with the lower surface side of the bin 16 facing the paper retainer 86, the stay 73 causes the flat plate portion 26 to move. Bending is prevented, and the transfer paper is pressed and fixed without bending or displacement.

When the paper pressing is completed, the eccentric cam 71 is rotationally driven in the clockwise direction (H direction in the drawing) by a predetermined amount at a predetermined timing as described above. Due to the rotation of the eccentric cam 71, the fifth pin 254 of the stopper 25 slides on the outer peripheral surface of the eccentric cam 71 as shown in FIG. 7C, and the distance from the rotary shaft 72 of the outer peripheral surface increases. The stopper 25 is moved upward in response to the
6b is used as a fulcrum to rotate clockwise in the figure to open the rear end of the bottle 16.

On the other hand, when the sheet processing is completed and the rear end of the bin 16 is closed, the eccentric cam 71 is rotationally driven in the reverse direction by a predetermined amount. As described above, the stopper 25 is given a rotational force counterclockwise in the figure with the pin 262 as a fulcrum by the biasing means (not shown), so that the stopper 25 slides on the outer peripheral surface of the eccentric cam 71 while Rotate in the opposite direction,
The eccentric cam 71 is stopped at the position where it comes into contact with the contact portion 71a (the state shown in FIG. 7B).

In the above embodiment, the eccentric cam 71 is provided with the stay 73 having a predetermined diameter on the rotary shaft 72, and the eccentric cam 71 is provided.
Although the bottom surface of the bin 16 is brought into contact with the stay 73 regardless of the rotating operation of the bin 16, the bending of the bin 16 is prevented when the transfer paper is pressed and fixed by the paper presser 86.
The stay 73 ′ may be brought into contact with the bottom surface of the bottle 16 in conjunction with the rotation operation of the above, and the bottom surface of the bottle 16 may be reinforced when the stopper 25 is opened to prevent the bending.

FIG. 11 is a side view showing a second embodiment for preventing the bending of the bottle 16. Bin 16 shown in FIG.
The bending prevention mechanism of the eccentric cam 7 is as shown in FIG.
Stay 7 in parallel with the rotary shaft 72 at a predetermined eccentric position 1.
3'is provided and the stay 7 is interlocked with the rotation of the eccentric cam 71.
3'is rotated around the rotary shaft 72.

With this mechanism, the stay 73 'is rotationally moved to the bottom surface side of the bottle 16 in association with the rotation of the stopper 25 by the rotation of the eccentric cam 71, as shown in FIG.
When the stopper 25 is opened, the stay 7
3'abuts on the bottom surface of the bin 16 so that the bending of the bin 16 due to the pressing of the transfer paper by the paper presser 86 is prevented.

The cross-sectional shape of the stay 73 'is not limited to a circular shape, but may be any shape such as an ellipse, and an appropriate size can be used. Particularly, in the case of the substantially C-shaped one, the outer peripheral surface of the stay 73 'can be brought into contact with the bottom surface of the bin 16 from the start of opening the stopper 25 to the end of opening thereof, so that it is more flexible than the rod-shaped stay 73'. The effect can be further improved.

Further, a mounting member may be provided on the rotary shaft 72, and the stay 73 'may be provided in parallel with the rotary shaft 72 with the mounting member interposed therebetween.

Next, the structure of the sheet processing unit 30 will be described. The sheet processing device 28 is attachable to and detachable from the support frame 29. The configuration will be described with reference to FIGS. 12 and 13.

FIG. 12 is an external view showing a schematic structure of the support frame 29 with the sheet processing device 28 removed. FIG. 13 is a partial cross-sectional view mainly showing the structure of the support frame 29 as seen from the side surface.

The support frame 29 includes a sliding base 42 and a mounting base 44.
And consists of. A belt 31 is horizontally arranged on the left and right sides above the sheet processing unit 30, and is reciprocally movable by a motor 32 (see FIG. 13). The slide base 42 is adapted to reciprocate the support frame 29 in the left-right direction by the rotation of the belt 31. In addition, 100, 101, the sliding base 42,
The rollers are provided so as to move smoothly with respect to the sheet processing unit 30 corresponding to the stationary side.

The mounting table 44 is adapted to move the sheet processing device 28 forward and backward along the inclination by the rotation of the motor 43. Note that 102, 103, 10
Reference numerals 4 and 105 are rollers provided so that the mounting base 44 moves smoothly with respect to the slide base 42 corresponding to the stationary side when the mounting base 44 moves.

Here, the drive mechanism of the mount 44 will be described. In FIG. 13, 140, 141, 142 are shown.
Gears 141 and 142 are provided coaxially with the gears 143 and 143, and increase the torque generated by the motor 43 and transmit the generated torque. Further, 144 is a pulse plate that rotates integrally with the gear 143, 145 is a cylindrical cylinder, and 146 is rotatably attached to the eccentric position of the upper surface of the pulse plate 144 and the lower part of the cylinder 145, respectively. It is a connecting rod that connects the pulse plate 144 and the cylindrical body 145. Reference numeral 147 denotes a cylindrical guide rod attached to the slide base 42 side, and has the same inclination as the guide rail 60 for guiding the backward movement of the bin 16.

The cylindrical body 145 is a guide rod 147.
(See FIG. 12), and reciprocally slides along the guide rod 147 by the rotation of the pulse plate 144. Reference numeral 149 denotes a cutout portion provided on the mounting base 44, and the cylindrical body 145 contacts an edge of the cutout portion 149 to move the mounting base 44 in the front-rear direction.

Reference numeral 148 denotes a fifth sensor composed of a photo interrupter or the like for detecting the rotation amount of the pulse plate 144.

In the above structure, when the motor 43 rotates and the pulse plate 144 starts to rotate through the gears 140, 141, 142 and 143, the cylindrical body 145 is moved forward through the connecting rod 146 and integrated with it. Then, the mount 44 is moved forward along the inclination toward the sheet side.

Then, the rotation amount of the pulse plate 144 is detected by the fifth sensor 148, and the motor 43 is stopped at a predetermined position. As a result, the sheet is set on the table 151 of the punch 40 and the auxiliary table 152 or the table 154 of the stapler 41.

When the mounting base 44 is returned to the initial position, the motor 43 is further rotated in the same direction to move the fifth sensor 148.
When it is detected that the mounting base 44 has returned to the initial position, the motor 43 is stopped.

Returning to FIG. 12, reference numeral 106 designates a T-shaped metal fitting screwed at two points, which serves to assist in fixing the punch 40 through the slit 107 provided in the lower portion of the punch 40. Reference numeral 108 denotes a connector 10 provided on the punch 40 side.
9 (see FIG. 14) is a connector to be connected to the punch 4
A signal line for operation control is connected to 0.
The connector 108 is provided with two holes 110 into which pins (not shown) for assisting fixing are inserted.

The punch 40 is attached to the mount 42 by inserting the T-shaped metal fitting 106 into the slit 107, connecting the connector 108 and the connector 109, and screwing them through the holes 111 and 112 at one place. ..
The hole 112 can be adjusted in the direction of contact and separation with the paper.

On the other hand, reference numeral 113 denotes a U-shaped metal fitting screwed at two points, and the elastic force of the metal fitting clamps the stapler 41 from both sides to assist in fixing the stapler 41. Reference numeral 114 is a connector that is connected to a connector 115 (see FIG. 15) provided on the stapler 41 side, and connects a signal line or the like for controlling the operation of the stapler 41. This connector 114 is provided with two holes 116 for inserting pins (not shown) for assisting fixing.

The stapler 41 is mounted on the mounting base 42 by sandwiching it from both sides by the elastic force of the U-shaped metal fitting 113, connecting the connector 114 and the connector 115, and screwing them in one place through the holes 117 and 118.

Next, the structure of the punch 40 and the stapler 41 as an example of the sheet processing apparatus 28 will be briefly described.

FIG. 14 is an external view showing a schematic structure of the punch 40, and FIG. 15 is an external view showing a schematic structure of the stapler 41. Note that the drive mechanism and the like are omitted in FIGS. 14 and 15.

In FIG. 14, reference numeral 150 is a punching blade for punching a sheet, and 151 is a table on which the sheet is set when punching. On both sides of the table 151, auxiliary tables 152 that prevent the paper from hanging down are provided. Inclined portions 151a and 152a for smoothing the setting of sheets are provided at the respective tip portions of the table 151 and the auxiliary table 152. That is, the inclined portions 151a and 152a are for scooping up the leading edge of the sheet to be processed when the leading edge of the sheet to be processed hangs down due to the release of the stopper 25, and to set it appropriately at the setting position.

Further, in FIG. 15, 153 is a staple binding unit for binding sheets with staples, and 154 is a table on which sheets are set when stapling.

In the stapling process, since the stopper 25 is not released when stapling at the position of the notch 251a of the stopper 25, the auxiliary table 152 is not particularly required, and when stapling at the position where the stopper 25 is released. Is the base 151 of the punch 40 and the auxiliary base 15
2 acts as an auxiliary stand for the stapler 41, and
Since it also scoops the hanging paper,
1 includes the auxiliary table 152 and the inclined portions 151a and 152a.
Is not provided in particular.

The auxiliary table 152 and the slanted portion 151
It is sufficient that a and 152a are provided on at least one of the punch 40 and the stapler 41.

Next, the sheet processing unit 30 can be attached to and detached from the second housing 14, and its configuration will be described with reference to FIGS. 16 and 17. FIG.
1 shows a state in which the support frame body 29 from which the sheet processing device 28 is removed is placed on the sheet processing unit 30, FIG.
It is a schematic block diagram seen from the arrow A direction. In addition, FIG.
FIG. 4 is an external view showing a schematic configuration of the inside of the second housing 14 from which the sheet processing unit 30 is removed.

Reference numeral 130 is a roller, and a rectangular kerf 131 is provided at a corresponding portion of the second housing 14. Reference numerals 132, 133, 134, 135 and 136 are gears, and the belt 31 is provided with gears 134, 135 and 136.
Is hung on.

Reference numeral 137 is a sixth sensor composed of a photo interrupter or the like for detecting the initial position of the slide base 42. The initial position is set on the front side of the second housing 14, and when the slide table 42 is located at the initial position, the transfer sheet is stapled to a position facing the cutout portion 251 of the stopper 25. You can do it.

In the above structure, when the motor 32 rotates and the gear 134 starts to rotate through the gears 132 and 133, the belt 31 rotates and the slide base 42 moves in the left-right direction, that is, the width of the sheet that is pressed and fixed. Move in the direction parallel to the direction. The control of the moving distance of the slide base 42 is performed based on the operating time of the motor 32 or the number of motor drive pulses with reference to the initial position and the like.

When the slide base 42 is returned to the initial position, the motor 32 is rotated in the reverse direction, and when the sixth sensor 137 detects the slide base 42, the motor 32 is stopped.

The front side of the sheet processing unit 30 is configured to be longer than the width of the bin 16 by, for example, the dimension length of the punch 40, and only by opening the panel of the second housing 14, the outside sheet processing unit 28, that is, the punch. 40 can be used for maintenance and inspection work.

When the sheet processing unit 30 is pulled out to the front side, the roller 130 comes into contact with the front side edge 131a of the rectangular kerf 131 and temporarily stops. The roller 130 and the kerf 131 are set at the temporarily stopped position so that the support frame 29 is pulled out from the second housing 14 to the front side. Therefore, in this state, maintenance and inspection work can be performed on the inner sheet processing device 28, that is, the stapler 41.

When the sheet processing unit 30 is further pulled out, it can be pulled out slightly to release the engagement between the roller 130 and the edge 131a, and the roller 130 can be easily pulled out.

Next, an operation procedure for actually carrying out sheet processing will be described with reference to FIGS. Figure 1
FIG. 8 is a flowchart showing an operation procedure when performing paper processing. When the position and type of paper processing are selected with the selection key 13, the paper processing operation is started.

First, the position for paper processing is determined (step S1). When processing is performed on only one corner of the sheet processing device 28 on the initial position side (YES in step S1).
S), the process proceeds to step S2 in order to perform the process (hereinafter, referred to as a specific mode), and when the position where the sheet processing is performed is not only one corner on the initial position side of the sheet processing device 28, or the other one or more positions are processed. (Step S1
NO), the process proceeds to step S3 to perform the process (hereinafter, referred to as a normal mode).

First, the processing procedure in the specific mode will be described. FIG. 19 is a flowchart showing an operation procedure in the specific mode, that is, when the stapling process is performed only at one place on one corner of the paper.

First, the action plate 58 is driven to retract the bin 16 on which the sheets to be stapled are placed toward the stapler 41 to a predetermined position (sheet processing position) (step S11). .. When the backward movement is completed, the paper is pressed and fixed by the paper retainer 86 (step S
12).

Next, the mounting table 44 is moved forward at the initial position to set a sheet on the table 154 of the stapler 41 (step S13). Since the notch 251a is formed in the stopper 25 at this one corner, the operation of releasing the stopper 25 is unnecessary. Then, the stapler 41 is operated to bind the sheets by the stapling operation (step S14).

When the stapling operation is completed, the mounting base 44
Is retracted to retract the stapler 41 from the sheet and return it to its original position (step S15). Next, the paper retainer 86 is released (step S16), and the bin 16 for which the stapling process has been completed is advanced to return to the original position (retraction start position) (step S17).

Next, it is determined whether or not the stapling process has been performed on all the stages of the bin 16 on which the sheets are placed. If not completed (NO in step S18), the column 23 is driven. To move the bin 16 by one step (step S19). At this time, if the stapling process is started from the lower side of the bin 16, the stapling process is increased by one step, and in the opposite case, the stapling process is decreased by one step. Then, the processes of steps S11 to S18 are repeated for the newly moved bin 16. On the other hand, if the stapling process is completed for all the required bins (YES in step S18), this process ends.

Next, the processing procedure in the normal mode will be described. FIG. 20 is a flowchart showing an operation procedure in the normal mode, for example, when punching at two positions symmetrical in the width direction of the paper. FIG. 21 is a diagram showing the movement of the punch 40 and the punch position of the sheet at the retracted position.

First, the punch 40 is moved forward from the initial position (a) in the width direction of the sheet and stopped at the position (a) facing the first punch position (c) (step S21). Next, the bin 1 on which the sheet to be punched is placed
6 is retracted to a predetermined position (sheet processing position) (step S22). Then, the paper is pressed and fixed by the paper retainer 86 (step S23). When the pressing and fixing of the paper is completed, the stopper 25 of the bin 16 is released (step S2).
4). Since the paper is already fixed in step S23, the paper does not slide down even if the stopper 25 is released.

Next, by moving the mounting table 44 forward, the sheets are set on the table 151 of the punch 40 and the auxiliary table 152 (step S25). Then, the punch 40 is operated to open a hole in the paper (step S26). When the punching to the first punch position (c) is completed, the punch 40 is continuously moved in the forward movement direction and stopped at the second punch position (d) (step S27). And
The punch 40 is operated to open a hole in the paper (step S28). When the punching is completed, the mounting base 44 is retracted to retract the punch 40 to the position (e) and retract from the sheet (step S29).

Then, the stopper 25 of the bottle 16 is returned from the released state to the set state (step S30), and further,
The paper retainer 86 is released (step S31). Then, the punched bin 16 is advanced and returned to the original position (retraction start position) (step S32).

Next, it is determined whether or not the punching process has been performed for all the stages of the bin 16 on which the sheet is placed. If not completed (NO in step S33), the bin 16 is determined.
Is moved by one step (step S35). At this time,
If punching is started from the lower side of the bin 16,
It goes up one step at a time, and goes down one step at the opposite.

Further, the punch 40 is moved back from the position (e) in the width direction of the paper and stopped at the position (a) facing the first punch position (c) (step S36). Then, for the newly moved bin 16, step S22
~ The process of S33 is repeated.

On the other hand, if the punching process has been completed for all required bins (YES in step S33), step S
In step 34, the punch 40 is returned to the initial position (A), and this processing ends.

The method of moving the punch 40 is not limited to the above method. For example, step S3
Position (e) without returning from position (e) to position (a) at 6
Stop at. Then, for the next sheet, a hole is made first from the second position (D). Then, a hole is opened at the first position (c) and the hole is retracted to the position (a). In this way, the order in which the holes are formed in the first position (c) and the second position (d) can be alternately changed every time the sheets are replaced.

Although the punching process has been described here, the stapling process can also be performed by similar control. In this case, since the stapler 41 is placed adjacent to the punch 40, the initial position is different, and therefore the position control in the reciprocal movement direction of the mounting base 42 is required by that distance.

Further, here, the control in the case where there are two processing positions has been described, but the same control can be performed when there are more processing positions, and the processing can be performed for any desired set position. Can be applied.
It is also possible to set the initial position to the rear surface (depth) side of the image forming apparatus 1, and in this case, the second housing 14
An open / close panel is provided on the rear surface for maintenance and inspection.

In the present embodiment, the punch 40 and the stapler 41 are described as an example of the sheet processing device 28, but the present invention is not limited to these, and any device such as a printing device or any other device for processing a sheet may be used.

In the above-described embodiment, when the sheet processing device 28 is positioned at the processing position with respect to the sheet, the rotation amount of the motor 43 is controlled, but the invention is not limited to this. A paper presence / absence detection switch that detects the presence of paper and turns on may be provided near the processing unit 28, and the positioning of the motor 43 may be controlled by turning on / off the switch.

By thus providing the paper presence / absence detection switch, for example, if the paper is removed from the bin 16 after the sort processing and before the paper processing operation, this switch remains off. Paper processing device 2
It is possible to prevent the idle operation of 8.

[0128]

As described above, according to the present invention, the transfer paper loaded in the bin is pressed and fixed, and the stopper is rotated to open the rear end portion of the bin. Since the sorter with a paper processing function for performing a predetermined paper processing on the transfer paper exposed from the section is provided with the bending prevention means for preventing the bending of the bottle by coming into contact with the bottom surface of the bottle, the transfer paper is transferred by the pressing means. Even when pressed, the bin does not bend, the transfer paper is securely fixed between the pressing means and the bin, and stable paper processing can be performed.

Further, since the cylindrical member with which the outer peripheral surface is in contact is provided as the deflection preventing means, the transfer paper is preferably fixed together with the bottle between the pressing means and the cylindrical member.

Further, the stopper rotating means is rotated to open and close the stopper, and the rotary shaft of the stopper rotating means is located at a position below the bin and substantially corresponding to the pressing position of the pressing means. The deflection preventing means is composed of a rotary shaft connected to the rotary shaft and a rod member provided in parallel with the rotary shaft at a predetermined interval and synchronized with the driving of the stopper rotating means. When the rod member is driven to rotate and the stopper is rotated to open the rear end of the bin, the rod member is brought into contact with the bottom surface of the bin. At the same time, it is held between the pressing means and the rod member, and the same effect as described above can be obtained.

[Brief description of drawings]

FIG. 1 is a side view showing an internal configuration of a second housing.

FIG. 2 is a main part plan view showing the structure of a bottle.

FIG. 3 is a perspective view of a main part showing the structure of a connection part of a bottle.

FIG. 4 is a side view showing the structure of a cylinder.

5 is a sectional view taken along line II-II of FIG.

FIG. 6 is a side view showing the structure of a cylinder.

FIG. 7 is a side view showing a moving mechanism of the bottle.

FIG. 8 is a side view showing a state where the bin is moved to a sheet processing position.

FIG. 9 is a diagram showing a paper pressing mechanism.

FIG. 10 is a diagram for explaining the opening operation of the stopper as the bottle moves backward. (A) is a side view of an essential part showing a state where the bin is in the middle of retreating, (b) is a side view of the essential part showing a state where the bin is retracted to a sheet processing position, and (c) is a stopper of the bin being opened. FIG. 3 is a side view of a main part showing a state in the middle of the process.

FIG. 11 is a side view showing a second embodiment of a stay for preventing bending of a transfer sheet. FIG. 7A is a side view of a main part showing a state where the bin is retracted to a sheet processing position, and FIG. 7B is a side view of a main part showing a state where the stopper of the bin is being opened.

FIG. 12 is an external view showing a schematic configuration of a support frame body with a sheet processing device removed.

FIG. 13 is a partial cross-sectional view mainly showing the structure of a support frame, seen from the side surface.

FIG. 14 is an external view showing a schematic configuration of a punch.

FIG. 15 is an external view showing a schematic configuration of a stapler.

FIG. 16 is a schematic configuration diagram showing a state in which a support frame is placed on a sheet processing unit.

FIG. 17 is an external view showing a schematic configuration inside a second housing.

FIG. 18 is a flowchart showing an operation when performing paper processing.

FIG. 19 is a flowchart showing an operation in a specific mode.

FIG. 20 is a flowchart showing an operation in a normal mode.

FIG. 21 is a diagram showing movement of a punch.

FIG. 22 is an external view of the entire image forming apparatus.

[Description of Reference Signs] 1 image forming apparatus 2 first housing 3 automatic document feeding means 4 document placing section 5 document loading section 6 document feeding section 7 document unloading section 9, 10, 11 cabinet 12 operation panel 13 selection key 14 number 2 housing 14a open / close panel 14b carry-in port 14c, 14d transport path 15 sorter 16 bin 17 paper discharge part 20, 21, 22, 254, 262 pin 21a roller 23 column 24 groove 25 stopper 26 flat plate part 27, 59 connection part 28 paper Processing device 29 Support frame 30 Paper processing unit 31 Belts 32, 43, 51, 74, 81, 230 Motor 40 Punch 41 Stapler 42 Sliding table 44 Mounting table 52, 75 Warm wheel 53, 54, 55, 56, 76, 82, 83, 84, 8
5 gears 57, 77 chain wheel 58 working plate 60, 89 guide rail 61, 62, 79, 91 sensor 71 eccentric cam 71a abutting part 73, 73 'stay 78, 90, 144, 235 pulse plate 86 paper retainer 87, 271 Spring 88 Link bar 244 Cutout 210a, 210b Rail 231,234 Timing belt 232,233 Bevel gear 236 Detection sensor 261 Engagement part 251 Water flat plate part 252 Projection piece 253 Engagement claw 581 Restriction part

Claims (3)

[Claims] 1. A bin having a rotatable stopper at its rear end, and a pressing means for pressing a position other than the rear end of this bin to press and fix the transfer paper loaded in the bin, The bin includes a stopper pivoting unit that pivots the stopper to open and close the rear end of the bin, and a paper processing unit that performs a predetermined paper process on the rear end side of the transfer paper loaded in the bin. A sorter with a paper processing function for pressing and fixing the loaded transfer paper, rotating the stopper to open the rear end of the bin, and performing a predetermined paper processing on the transfer paper exposed from the rear end of the bin. A sorter with a sheet processing function, characterized in that the sorter is provided with a deflection preventing means that comes into contact with a bottom surface of the bin substantially corresponding to a pressing position of the pressing means. 2. The sorter with a paper processing function according to claim 1, wherein the deflection preventing means is a cylindrical member with which the outer peripheral surface is in contact. 3. The sorter with a sheet processing function according to claim 1, wherein the stopper is adapted to be opened and closed by rotating the stopper rotating means, and the deflection preventing means is located below the bin. A rotary shaft connected to the rotary shaft of the stopper rotating device at a position substantially corresponding to the position pressed by the pressing device, and the rotary shaft provided in parallel at a predetermined interval. A rod member, the rod member is rotationally driven in synchronization with the driving of the stopper rotating means, and when the stopper is rotated to open the rear end of the bottle, the rod member moves A sorter with a paper processing function, characterized in that it comes into contact with the bottom surface.