JP6822092B2 - Booklet processing unit and paper aftertreatment device - Google Patents

Description

The present invention relates to a booklet processing unit and a paper aftertreatment device.

One of the functions of the paper aftertreatment device is saddle stitching and saddle stitching of booklets. In order to improve the quality of the booklet, after the saddle stitching or folding process of the booklet, a booklet process such as a square fold process for shaping the back of the booklet into a square shape or a small edge cutting process for cutting the edge of the booklet is performed. The booklet is clamped when processing the booklet, but the position of the tip of the booklet and the posture of the booklet at that time are very important, and the booklet is in a state where the booklet is inflated and the position of the tip of the booklet is not specified. When clamping is performed, distortion at the tip of the booklet and deviation from a predetermined position of the booklet may occur. When the above-mentioned booklet processing is performed in this state, there is a problem that the cut portion is slanted or the square fold processing cannot be performed properly.

The method of saddle stitching or folding the booklet includes the so-called saddle-stitching method used in production machines and the so-called knife bundle folding method generally used in office machines. In a paper aftertreatment device that employs a saddle method, in order to solve the above problems, a lifter member is inserted inside a saddle-stitched or folded booklet to maintain the position of the tip of the booklet and the posture of the booklet. However, a technique for carrying the booklet to the clamp portion and performing booklet processing such as square folding and edge cutting is disclosed (see, for example, Japanese Patent Application Laid-Open No. 2013-220940 (Patent Document 1)).

Japanese Unexamined Patent Publication No. 2013-220940

However, it is difficult to apply the booklet processing technique in the paper aftertreatment device that adopts the saddle method to the paper aftertreatment device that adopts the knife bundle folding method. Therefore, there still exists a problem that distortion occurs at the tip of the booklet or deviation from a predetermined position of the booklet occurs.

An object of the present invention is to provide a booklet processing unit and a paper aftertreatment device capable of appropriately defining the position of the tip of the booklet at the time of clamping and the posture of the booklet.

In the course of development, it is difficult for the present inventor to insert the lifter member used in the paper aftertreatment device that adopts the saddle method into the inside of the booklet in the paper aftertreatment device that adopts the knife bundle folding method. It was confirmed. When the booklet processing is performed by the paper post-processing device adopting the saddle method, since the booklet is configured to move in the vertical direction, there is a space inside the booklet in advance, and it is easy to insert the lifter member. On the other hand, when the booklet processing is performed by the paper post-processing device that adopts the knife bundle folding method, the space inside the booklet is small because the booklet moves in the horizontal direction, and the lifter member can be inserted. difficult.

Therefore, the present inventor has further studied so that a space can be formed inside a booklet that moves horizontally, and has completed the present invention.

The booklet processing unit includes a transport unit and a collision unit. The transport section sandwiches a saddle-stitched or saddle-folded booklet in the thickness direction. The transport unit transports the booklet with the binding portion or folding portion of the booklet as the tip. The collision portion is arranged downstream of the transport portion in the transport direction of the booklet. By pressing the tip conveyed by the conveying portion against the collision portion, a space is formed at a position where the number of booklets is bisected. The booklet processing unit further includes a transport unit and a drive unit. The transport unit can be moved in both the booklet width direction and the transport direction, which are orthogonal to the transport direction and the thickness direction. The drive unit moves the transport unit from the outside of the space to the space along the width direction of the booklet.

The booklet processing unit described above makes it possible to easily insert the transport unit inside the booklet. When the transport unit transports the booklet in the transport direction, the booklet can be transported while maintaining the position of the tip and the posture of the booklet.

The collision portion has a recess that is recessed toward the inside of the surface facing the upstream side in the transport direction. As a result, a space can be surely formed inside the booklet.

The recess has a V-shaped portion that is V-shaped. As a result, a space can be surely formed inside the booklet.

The collision portion has a pair of rollers. The transport portion presses the tip against the contact portion where the outer peripheral surfaces of the roller pair come into contact with each other. As a result, a space can be surely formed inside the booklet. Further, since the roller pair functions as a guide, the booklet can be conveyed in a state where the position of the tip and the posture of the booklet are appropriately defined.

The collision portion has a rotation adjusting portion capable of stopping the rotation of the roller pair when the tip is pressed against the contact portion by the transport portion. As a result, it is possible to prevent the booklet from being transported to the downstream side in the transport direction with respect to the collision portion, so that a space can be more reliably formed inside the booklet.

The booklet processing unit further includes a booklet processing unit that performs booklet processing. The drive unit moves the transport unit that has moved into the space downstream in the transport direction. The booklet transported to the downstream in the transport direction by the transport unit is subjected to booklet processing by the booklet processing unit. As a result, the booklet processing can be appropriately performed.

The booklet processing unit performs at least one of the edge cutting process and the square fold process. As a result, square fold processing can be performed appropriately. In addition, the small-lot cutting process can be performed without the cutting portion being slanted.

The paper post-processing device includes the above-mentioned booklet processing unit and a saddle stitching unit for creating a booklet. As a result, it is possible to carry the booklet while maintaining the position of the tip and the posture of the booklet, and it is possible to realize a paper post-processing device capable of appropriately performing the booklet processing.

It is possible to realize a booklet processing unit and a paper post-processing device that can appropriately define the position of the booklet tip at the time of clamping and the posture of the booklet.

It is the schematic of the image formation system including a booklet processing unit. This is a booklet that has been saddle-stitched by a paper post-processing device. It is the schematic of the paper aftertreatment apparatus. It is a schematic diagram in the booklet processing unit which performs square fold processing. It is a top view in the booklet processing unit shown in FIG. It is a figure which shows the state which the booklet is conveyed by the conveying part in the carrying direction, and is pressed against the collision part. It is a figure which shows the state which the transport part is inserted in the space. It is a figure which showed the state which the transport part inserted into a space moves in a transport direction. It is a figure which shows the state before the booklet is fixed by the grip part. It is a figure which shows the state which a booklet is fixed by a grip part. It is a figure which shows the state which square fold processing is applied to a booklet. It is a schematic diagram in the booklet processing unit which performs the edge cutting process. It is a figure which shows the case where the collision part shown in FIG. 6 is a roller pair. It is a figure which shows the roller pair which has a rotation adjustment part.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the embodiments shown below, the same or common parts are designated by the same reference numerals in the drawings, and the description thereof will not be repeated.

<Outline configuration of image formation system>
FIG. 1 is a diagram showing a schematic configuration of an image forming system including a paper aftertreatment device 200. The image forming system is mainly composed of an image forming apparatus 100 that forms an image on paper and a paper post-processing apparatus 200 that performs post-processing such as folding of the paper on which an image is formed.

In the image forming apparatus 100, the paper contained in the paper feed tray 101 is conveyed to an image forming portion (not shown) by the paper feeding rollers 102 and the conveying rollers 103 and 104 to form an image, and then the image is transferred to the fixing apparatus 105. After being fixed and cooled by the cooling device 106, the paper is transported to the paper aftertreatment device 200 by the transport roller 107.

<Rough configuration of paper aftertreatment device 200>
The paper post-processing apparatus 200 performs various processes such as staple processing, punch processing, sorting, non-sort processing, folding processing (Z folding), and bookbinding processing (saddle stitching, center folding, tri-folding) on the paper bundle. be able to. The saddle stitching process and the saddle stitching process will be described below.

FIG. 2 is a booklet that has been saddle-stitched by the paper post-processing apparatus 200. The booklet that has been saddle-stitched or folded is referred to as booklet S. The booklet S is composed of a plurality of sheets of paper folded in half. For example, five sheets of paper form a booklet consisting of one front cover, one back cover, and eight sheets sandwiched between them.

The booklet S includes a binding portion B, a throat portion D, and a fore edge K. In the middle-folded booklet S, the portion corresponding to the binding portion B is referred to as a folded portion. The binding portion B and the folding portion form the spine of the booklet S. The throat portion D is inside the booklet S and is located on the back side of the binding portion B or the folding portion.

The edge K is the end of the booklet S and is located on the opposite side of the binding portion B or the folding portion. Since the booklet S is made by stacking multiple sheets of paper and folding them in half, the paper located inside the booklet S has a larger length protruding from the edge K in the direction opposite to the spine, and is outside the booklet S. The position of the paper has a smaller length protruding from the edge K in the direction opposite to the spine. The portion protruding from the edge K is cut by the edge cutting process described later, and the edge K is prepared.

FIG. 3 is a schematic view of the paper aftertreatment device 200. The paper aftertreatment device 200 includes a transport roller 201, a transport path switching member 202, and a paper output tray 401.

The transfer roller 201 sends the paper sent from the image forming apparatus 100 to the transfer path switching member 202. The transport path switching member 202 has a path for discharging the paper sent from the image forming apparatus 100 to the output tray 401 as it is without performing post-processing, and a saddle stitch accommodation described later for performing post-processing. The paper transport route is switched between the route for feeding to the unit 301. By repeating the above operation, a required number of sheets of paper are accommodated in the saddle stitch accommodating section 301.

The paper post-processing device 200 further includes a booklet processing unit 1, a booklet tray 50, and a saddle stitching unit 300. The saddle stitching unit 300 includes a saddle stitching accommodating portion 301, a folding roller 302, and a folding knife 303. In the saddle stitching unit 300, a saddle stitching process, a saddle stitching process, or the like is performed. In the saddle stitching unit 300 shown in FIG. 3, a knife bundle folding method is adopted. The knife bundle folding method is a method in which a folding roller 302 and a folding knife 303 are used to fold the central portion of the paper stored in the saddle stitch accommodating portion 301 to create a booklet. The saddle-stitched or half-folded booklet S in the saddle-stitching unit 300 is conveyed to the booklet processing unit 1. The booklet processing unit 1 is subjected to square fold processing, edge cutting processing and the like, which will be described later. The booklet S processed by the booklet processing unit 1 is then discharged to the booklet tray 50.

<Booklet processing unit>
The flow until the booklet S sent from the saddle stitching unit 300 is square-folded will be described with reference to FIGS. 4 to 12. In the figure (excluding FIG. 5), those existing inside the paper passing path c, which will be described later, are represented by solid lines, and those existing outside the paper passing path c are represented by dotted lines.

FIG. 4 is a schematic view of the inside of the booklet processing unit 1 that is subjected to the square fold processing. In the present specification, the direction indicated by the left arrow on the paper surface in FIG. 4 is referred to as the transport direction DR1, and the direction indicated by the vertical double arrow on the paper surface is referred to as the thickness direction DR2. FIG. 5 is a plan view of the booklet processing unit 1 shown in FIG. Note that FIG. 5 schematically shows a perspective booklet S. In the present specification, the direction indicated by the vertical double-headed arrow on the paper surface orthogonal to the transport direction DR1 and the thickness direction DR2 in FIG. 5 is referred to as a booklet width direction DR3. The area sandwiched by the alternate long and short dash line in the figure is the paper passage path c through which the booklet S is conveyed.

With reference to FIGS. 4 and 5, the booklet processing unit 1 to be subjected to the square fold processing includes a transport unit 10, a transport unit 11, a collision unit 12, a grip unit 13, a booklet processing unit 14a, and a drive unit 15. And, including. When the booklet S is not transported by the transport unit 10, in the booklet processing unit 1, the transport unit 10, the transport unit 11, the collision unit 12, the grip unit 13, and the booklet processing unit 14a move from upstream to downstream in the transport direction DR1. , Arranged in this order. The transport portion 10, the collision portion 12, and the grip portion 13 are arranged on the paper passage path c along the transport direction DR1. The transport unit 11, the booklet processing unit 14a, and the drive unit 15 are arranged so as to be separated from the paper passing path c.

The transport unit 10 has a pair of rollers 20. The transport unit 10 sandwiches the saddle-stitched or saddle-folded booklet S by the saddle-stitching unit 300 in the thickness direction DR2. The transport unit 10 transports the booklet S in the transport direction DR1 with the binding portion B or the folded portion as the tip T. The roller pair 20 is driven by a driving means (for example, a motor) (not shown). The roller pair 20 can also idle by blocking the driving force transmission path by, for example, a clutch provided in the driving force transmission path from the driving means to the roller pair 20.

The transport unit 11 has a rectangular flat plate shape. The thickness direction of the flat plate-shaped transport portion 11 is the thickness direction DR2. The long side of the rectangle of the transport portion 11 extends along the DR3 in the booklet width direction. The short side of the rectangle of the transport portion 11 extends along the transport direction DR1. The transport unit 11 is movable in the transport direction DR1 and the booklet width direction DR3. The drive unit 15 moves the transport unit 11 in the transport direction DR1 and the booklet width direction DR3.

The collision portion 12 has a recess 16 in which the surface facing the upstream side of the transport direction DR1 is recessed inward. In the present embodiment, the collision portion 12 has a V-shaped portion 17 in which a surface facing the upstream side in the transport direction DR1 is recessed inward. The collision portion 12 is movable in the booklet width direction DR3. The collision portion 12 is arranged downstream of the transport portion 10 in the transport direction DR1.

FIG. 6 is a diagram showing a state in which the booklet S is transported by the transport unit 10 in the transport direction DR1 and pressed against the collision portion 12. The transport unit 10 transports the booklet S in the transport direction DR1 with the booklet S sandwiched in the thickness direction DR2, and presses the tip T against the collision portion 12. The V-shaped portion 17 of the collision portion 12 is in a state of sandwiching the tip T. When the transport unit 10 conveys the booklet S in this state, a space R is formed inside the booklet S at a position that bisects the number of sheets of paper. At this time, the transport unit 11 is on standby outside the paper passing path c.

FIG. 7 is a diagram showing a state in which the transport unit 11 is inserted into the space R. By forming the space R inside the booklet S, a space into which the transport unit 11 can be inserted is formed. The drive unit 15 moves the transport unit 11 in the booklet width direction DR3. The transport unit 11 that has been waiting outside the paper passage path c moves from the outside of the space R to the space R along the booklet width direction DR3 without contacting the booklet S.

FIG. 8 is a diagram showing a state in which the transport unit 11 inserted in the space R moves in the transport direction DR1. The collision portion 12 moves along the booklet width direction DR3 and retracts to the outside of the paper passage path c before the transport portion 11 moves in the transport direction DR1. The drive unit 15 moves the transport unit 11 in the transport direction DR1. When the transport portion 11 inserted into the space R moves along the transport direction DR1, it comes into contact with the throat portion D located on the back side of the tip T. The transport unit 11 that comes into contact with the throat portion D transports the booklet S as it is in the transport direction DR1. At this time, the transport unit 10 is idling. Since the tip T located on the back side of the throat portion D is transported along the transport direction DR1, the booklet S can be transported while maintaining the position of the tip T and the posture of the booklet S.

FIG. 9 is a diagram showing a state before the booklet S is fixed by the grip portion 13. The transport unit 11 transports the tip T to a position slightly downstream of the transport direction DR1 with respect to the grip portion 13.

FIG. 10 is a diagram showing a state in which the booklet S is fixed by the grip portion 13. After the transport unit 11 transports the tip T to a position slightly downstream of the transport direction DR1 with respect to the grip portion 13, the drive unit 15 moves the transport unit 11 to the booklet width direction DR3. The transport unit 11 retracts to the outside of the paper passage path c along the DR3 in the booklet width direction. After the transport portion 11 is retracted, the booklet S is sandwiched and fixed by the grip portion 13 from the thickness direction DR2 direction. As a result, the booklet S is fixed by the grip portion 13 in a state where the position of the tip T and the posture of the booklet S are appropriately defined. The transport unit 11 retracts along the DR3 in the booklet width direction and then returns to the position shown in FIG.

FIG. 11 is a diagram showing a state in which the booklet S is subjected to the square fold process. The booklet processing unit 14a has a substantially cylindrical shape. The booklet processing unit 14a, which has been waiting outside the paper passing path c, moves into the paper passing path c along the booklet width direction DR3, and square-folds the tip T fixed by the grip portion 13. The booklet processing unit 14a is pressed against the tip T and moves along the booklet width direction DR3 to shape the tip T into a square shape. The booklet processing unit 14a may reciprocate in the booklet width direction DR3 a plurality of times depending on the number of booklets S.

The flow until the booklet S is square-folded is described with reference to FIGS. 4 to 11. When the booklet S is subjected to the edge cutting process, the booklet processing section 14a is replaced with the booklet processing section 14b described later. The booklet processing unit 14b has a blade-like shape.

FIG. 12 is a schematic view of the inside of the booklet processing unit 1 that is subjected to the edge cutting process. In the booklet processing unit 1 that performs the edge cutting process, the transport unit 10, the transport unit 11, the collision unit 12, the booklet processing unit 14b, and the grip unit 13 are arranged in this order from upstream to downstream in the transport direction DR1. The grip portion 13 has a larger length in the transport direction DR1 than the grip portion 13 in the booklet processing unit 1 that performs the square fold process. The booklet S is fixed by the grip portion 13 in a state where the edge K is located slightly upstream of the transport direction DR1 with respect to the grip portion 13. As in the case of the square fold process described above, the booklet S is fixed by the grip portion 13 in a state where the position of the tip T and the posture of the booklet S are appropriately defined. After that, the booklet processing unit 14b cuts the edge K.

FIG. 13 is a diagram showing a case where the collision portion 12 shown in FIG. 6 is a roller pair 21. The form of the collision portion 12 is not limited, and any shape may be used as long as it can regulate the movement of the tip T of the booklet S conveyed by the conveying portion 10. For example, it may be a flat plate, a member including a U-shape, or a pair of rollers 21. The roller pair 21 is formed with a nip portion N in which the outer peripheral surfaces P of the roller pair 21 come into contact with each other. The nip portion N sandwiches the tip T in the same manner as the V-shaped portion 17 shown in FIG. When the transport unit 10 conveys the booklet S with the tip T sandwiched therein, a space R is formed inside the booklet S at a position that bisects the number of booklets.

FIG. 14 is a diagram showing a roller pair 21 having a rotation adjusting unit 18. The rotation adjusting unit 18 can change the rotation speed of the roller pair 21. The rotation adjusting unit 18 can also stop the rotation of the roller pair 21. When the transport unit 10 presses the tip T against the nip portion N, the rotation adjusting unit 18 stops the rotation of the roller pair 21.

<Effect>
The effects of the booklet processing unit 1 of the embodiment will be summarized as follows. A reference number is added to the configuration of the embodiment, which is an example.

As shown in FIG. 4, the booklet processing unit 1 of the present embodiment includes a transport unit 10 and a collision unit 12. The transport unit 10 sandwiches the saddle-stitched or saddle-folded booklet S in the thickness direction DR2. The transport unit 10 transports the booklet S with the binding portion B or the folding portion as the tip T. The collision portion 12 is arranged downstream of the transport unit DR1 with respect to the transport unit 10. By pressing the tip T transported by the transport unit 10 against the collision unit 12, a space R is formed at a position that bisects the number of booklets S. The booklet processing unit 1 further includes a transport unit 11 and a drive unit 15. The transport unit 11 can move in both the booklet width direction DR3 and the transport direction DR1. The drive unit 15 moves the transport unit 11 from the outside of the space R to the space R along the DR3 in the booklet width direction.

The transport unit 10 presses the tip T of the booklet S against the collision portion 12, and transports the booklet S along the transport direction DR1 with the booklet S sandwiched between the thickness directions DR2. As a result, the booklet S that is no longer transported to the downstream side of the transport direction DR1 bends with respect to the collision portion 12, and a space R is formed at a position that bisects the number of booklets. This makes it possible to easily insert the transport unit 11 inside the booklet S. The transport unit 11 inserted into the space R moves along the transport direction DR1. The transport unit 11 contacts the throat portion D and directly transports the booklet S in the transport direction DR1.

As a result, the tip T located on the back side of the throat portion D is transported along the transport direction DR1, so that the booklet S can be transported to the grip portion 13 while maintaining the position of the tip T and the posture of the booklet S. It will be possible. Therefore, the booklet S can be fixed to the grip portion 13 in a state where the position of the tip T and the posture of the booklet S are appropriately defined.

As shown in FIG. 6, the collision portion 12 has a recess 16 that is recessed toward the inside of a surface facing the upstream side in the transport direction DR1. When the conveying portion 10 pushes the tip T into the recess 16, the recess 16 is in a state of sandwiching the tip T of the booklet S. In that state, the transport unit 10 transports the booklet S along the transport direction DR1, so that the space R can be reliably formed inside the booklet S.

The recess 16 has a V-shaped portion 17 having a V-shaped shape. When the conveying portion 10 pushes the tip T into the V-shaped portion 17 of the collision portion 12, the V-shaped portion 17 is in a state of sandwiching the tip T of the booklet S. In that state, the transport unit 10 transports the booklet S along the transport direction DR1, so that the space R can be more reliably formed inside the booklet S.

As shown in FIG. 13, the collision portion 12 has a roller pair 21. The transport portion 10 presses the tip T against the nip portion N in which the outer peripheral surfaces P of the roller pair 21 come into contact with each other. Similar to the case where the collision portion 12 is the recess 16, the nip portion N is in a state of sandwiching the tip T. By transporting the booklet S along the transport direction DR1 in that state, the space R can be reliably formed inside the booklet S.

Further, the booklet S can be transported to the downstream side of the transport direction DR1 without retracting the roller pair 21 (collision portion 12) to the outside of the paper path c. Therefore, a space for retracting the collision portion 12 to the outside of the paper path c becomes unnecessary, and the dead space in the booklet processing unit can be reduced. Further, since the time for the collision portion 12 to retract is not required, the productivity is also improved. Further, when the booklet S is transported to the downstream side of the transport direction DR1 with respect to the collision portion 12, the roller pair 21 supports the booklet S, so that the position of the tip T and the posture of the booklet S are appropriately defined. The booklet S can be transported in the state of being closed.

As shown in FIG. 14, the collision portion 12 has a rotation adjusting portion 18 capable of stopping the rotation of the roller pair 21 when the tip T is pressed against the nip portion N by the transport portion 10. Since the booklet S whose tip T is pressed against the nip portion N can be prevented from being transported to the downstream side of the transport direction DR1 with respect to the collision portion 12, the space R is more reliably formed inside the booklet S. be able to.

The booklet processing unit 1 further includes a booklet processing unit 14a or a booklet processing unit 14b for performing booklet processing. The drive unit 15 moves the transport unit 11 that has moved into the space R downstream of the transport direction DR1. As shown in FIGS. 11 and 12, the booklet S transported to the grip portion 13 by the transport unit 11 is subjected to booklet processing by the booklet processing unit 14a or the booklet processing unit 14b. When the booklet S is fixed to the grip portion 13 in a state where the position of the tip T and the posture of the booklet S are appropriately defined, the booklet processing can be appropriately performed.

The booklet processing unit performs at least one of the edge cutting process and the square fold process. When the booklet S is fixed to the grip portion 13 in a state where the position of the tip T and the posture of the booklet S are appropriately adjusted, the square fold process can be appropriately performed. In addition, the small-lot cutting process can be performed without the cutting portion being slanted.

The paper post-processing device 200 includes a booklet processing unit 1 and a saddle stitching unit 300 for creating a booklet S. As a result, it is possible to realize a paper post-processing device capable of carrying the booklet S while maintaining the position of the tip T and the posture of the booklet S, and appropriately performing the booklet processing.

As a modification, the transport unit 10 may be transported by a belt. Alternatively, the transport unit 10 may transport the booklet S in the transport direction DR1 while sandwiching the edge K of the booklet S.

As described above, the above-described embodiment disclosed this time is an example in all respects and is not limiting. The technical scope of the present invention is defined by the scope of claims and includes all modifications within the meaning and scope equivalent to the description of the scope of claims.

1 Booklet processing unit, 10 transport section, 11 transport section, 12 collision section, 13 grip section, 14a, 14b booklet processing section, 15 drive section, 16 recesses, 17 V-shaped section, 18 rotation adjustment section, 20 roller pairs, 21 roller pairs, 50 booklet trays, 100 image forming devices, 101 paper feed trays, 102 paper feed rollers, 103, 104, 107 transport rollers, 105 fixing devices, 106 cooling devices, 200 paper aftertreatment devices, 201 transport rollers, 202 Transport path switching member, 300 saddle stitching unit, 301 saddle stitching housing, 302 folding roller, 303 folding knife, 401 paper ejection tray, B binding part, K edge, P outer peripheral surface, N nip part, R space, S booklet, T tip, c Paper path, DR1 transport direction, DR2 thickness direction, DR3 booklet width direction.

Claims (8)

A saddle-stitched booklet having a binding portion or a saddle-stitched booklet having a folding portion is sandwiched in the thickness direction, and the binding portion or the folding portion is used as a tip to convey the booklet.
A collision portion arranged on the downstream side of the transport portion in the transport direction of the booklet, and a collision portion .
A transport unit located between the transport unit and the collision portion and including a drive unit that is movable in both the booklet width direction and the transport direction, which are orthogonal to the transport direction and the thickness direction.
A clamp portion arranged on the downstream side of the booklet in the transport direction with respect to the collision portion,
One of the square fold processing portion arranged on the downstream side of the booklet in the transport direction with respect to the clamp portion and the small edge cutting treatment arranged on the upstream side of the booklet in the transport direction with respect to the clamp portion. Processing unit equipped with
With
In the booklet whose tip is pressed against the collision portion, a space is formed at a position where the number of the booklets is bisected.
The drive unit moves the transport unit from the outside of the space to the space along the booklet width direction.
The drive unit moves at least the transport unit that has moved into the space downstream in the transport direction, and the movement of the transport unit in the transport direction transports the booklet to the clamp portion to clamp the booklet. ,
The processing unit performs at least one of the square fold processing unit and the edge cutting process on the booklet.
Booklet processing unit. The booklet processing unit according to claim 1, wherein the collision portion has a recess that is recessed toward the inside of a surface facing the upstream side in the transport direction. The booklet processing unit according to claim 2, wherein the recess has a V-shaped portion having a V-shape. The collision portion has a pair of rollers and has a pair of rollers.
The booklet processing unit according to any one of claims 1 to 3, wherein the transport portion presses the tip against a contact portion where the outer peripheral surfaces of the roller pair come into contact with each other. The booklet processing unit according to claim 4, wherein the collision portion has a rotation adjusting portion capable of stopping the rotation of the roller pair when the tip is pressed against the contact portion by the transport portion. The drive unit moves the transport unit that has moved into the space downstream in the transport direction.
The booklet processing unit according to any one of claims 1 to 5, further comprising a booklet processing unit that performs booklet processing on the booklet transported by moving the transport unit in the transport direction. The booklet processing unit according to claim 6, wherein the booklet processing unit performs at least one of a small-edge cutting process and a square fold process. A paper post-processing apparatus comprising the booklet processing unit according to any one of claims 1 to 7 and a saddle stitching unit for producing the booklet.

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