JP6841015B2 - 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 the booklet is processed, 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 post-processing 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 transporting a booklet to a 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)).

In the technique described in Patent Document 1, it is necessary to pull out the lifter from the inside of the booklet immediately before clamping the booklet. A temporary fixing part has been proposed to suppress the displacement of the booklet due to the lifter pulling operation.

Japanese Unexamined Patent Publication No. 2013-220940

Since the technique described in Patent Document 1 requires a temporary fixing portion and a dedicated operation, the size of the apparatus increases and the production cost increases.

An object of the present invention is to provide a booklet processing unit and a paper post-processing device capable of suppressing misalignment of a booklet with a simple configuration.

The booklet processing unit includes a pair of rollers, a transport unit, a drive unit, and a brake. The roller pair sandwiches a saddle-stitched or half-folded booklet from both sides in the thickness direction of the booklet. The transport unit transports the booklet by moving while being sandwiched between the booklets. The drive unit moves the transport unit in both the transport direction of the booklet transported by the transport unit and the booklet width direction orthogonal to the transport direction and the thickness direction. The brake idles a pair of rollers while the drive unit moves the transport unit toward the downstream side in the transport direction. The brake regulates the rotation of the roller pair when the drive unit moves the transport unit along the width direction of the booklet and pulls out the transport unit from the booklet.

While the drive unit moves the transport unit toward the downstream side in the transport direction, the brake is released and the roller pair idles, so that the transport unit prevents the booklet from being transported downstream in the transport direction by the roller pair. You can avoid that.

When the transport unit is moved along the width direction of the booklet and the transport unit is pulled out from the booklet, the movement of the booklet with respect to the roller pair is restricted by operating the brake and restricting the rotation of the roller pair. As a result, it is possible to suppress the deviation of the posture of the booklet.

The transport unit transports the booklet from the upstream side to the downstream side in the transport direction with respect to the roller pair. As a result, the roller pair can be passed through the booklet in a state where the position of the tip and the posture of the booklet are appropriately defined.

The booklet processing unit includes a drive source and a drive cutoff unit. The drive source drives a pair of rollers. The drive cutoff unit is provided in a drive force transmission path that transmits power from the drive source to the roller pair. By blocking the drive source and the roller pair, the roller pair can idle without being loaded by the drive source. By connecting the drive source and the roller pair, it is possible to apply a load to the roller pair and regulate the rotation of the roller pair.

The drive source has a motor. As a result, a large load can be applied to the roller pair.

The drive cutoff unit has an electromagnetic clutch. This makes it possible to easily switch between connecting and disconnecting the drive source and the roller pair.

The booklet processing unit further includes a booklet processing unit. The booklet processing unit performs booklet processing on a booklet that is transported by the transport unit and the transport unit is pulled out along the width direction of the booklet. 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 booklet processing unit further includes a transport unit. The transport unit is arranged on the upstream side of the roller pair in the transport direction, and transports the booklet along the transport direction. When the tip of the booklet transported by the transport section is pressed against the roller pair, the brake regulates the rotation of the roller pair. As a result, a space can be formed inside the booklet, and the transport portion can be easily inserted inside the booklet.

The paper post-processing device includes a booklet processing unit and a saddle stitching unit for creating a booklet. This makes it possible to realize a paper post-processing device capable of appropriately performing booklet processing.

It is possible to realize a booklet processing unit and a paper post-processing device that can suppress the displacement of the booklet with a simple configuration.

It is the schematic of the image formation system including the paper post-processing apparatus. It is a schematic diagram of a paper aftertreatment device. This is a booklet that has been saddle-stitched by the saddle-stitching unit. 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 schematic diagram which shows the driving force transmission path which transmits the driving force from a driving source to a roller pair. It is a schematic diagram which shows the state which the roller pair and the drive source are cut off by the drive cutoff part. 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 the transport part was pulled out from a booklet along the width direction of a booklet before the booklet was fixed by the grip part. It is a figure which shows the state which the booklet is fixed by the grip part. It is a figure which shows the state which square fold processing is applied to a booklet. It is a figure which shows the state of transporting a booklet which has been subjected to a square fold process. It is a schematic diagram in the booklet processing unit which performs the edge cutting process.

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 device 100 that forms an image on paper and a paper post-processing device 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 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. 2, 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.

FIG. 3 is a booklet that has been saddle-stitched by the saddle-stitching unit 300. The booklet that has been saddle-stitched or folded in the middle 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.

The booklet S that is saddle-stitched or folded 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 1>
With reference to FIGS. 4 to 15, the flow until the booklet S sent from the saddle stitching unit 300 is square-folded will be described. In the following figures (excluding FIGS. 5, 6 and 7), 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. In addition, among the roller pairs in the figure, those whose rotation direction is shown by a solid line are rotating under the driving force, and those whose rotation direction is shown by a dotted line are idle. Indicates that you are.

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 in FIG. 5 is referred to as the booklet width direction DR3. The booklet width direction DR3 is orthogonal to the transport direction DR1 and the thickness direction DR2. 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 grip unit 13, a booklet processing unit 14a, a drive unit 15, and a brake 19. , Roller vs. 22 and. 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 roller pair 22, the grip portion 13, and the booklet processing unit 14a move from upstream to downstream in the transport direction DR1. , Arranged in this order. The transport unit 10, the roller pair 22, and the grip portion 13 are arranged in the paper passage path c along the transport direction DR1. The transport unit 11, the booklet processing unit 14a, the drive unit 15, and the brake 19 are arranged so as to be out of the paper passage 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 be idled 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 rectangular short side of the transport portion 11 extends along the transport direction DR1. The transport unit 11 can move 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 transport unit 11 transports the booklet S by moving while being sandwiched between the booklets S.

The brake 19 makes the roller vs. 22 rotatable or regulates the roller vs. 22 rotation. When the brake is released, the roller pair 22 can rotate or idle under the driving force. When the brakes are activated, the rollers vs. 22 are restricted in rotation.

The roller pair 22 sandwiches the booklet S from both sides of the DR2 in the thickness direction. The roller pair 22 is arranged downstream of the transport direction DR1 with respect to the transport unit 10.

FIG. 6 is a schematic view showing a driving force transmission path d for transmitting a driving force from the driving source 23 to the roller pair 22. The booklet processing unit 1 includes a drive source 23 and a drive cutoff unit 24. The drive source 23 generates a rotational driving force for rotating the roller pair 22. The drive cutoff unit 24 is provided in the drive force transmission path d from the drive source 23 to the roller pair 22. The drive cutoff unit 24 is configured to be able to switch between connection and cutoff of the drive force transmission path d. In a state where the driving force transmission path d is connected and the roller pair 22 and the driving source 23 are connected, the roller pair 22 can rotate by receiving the rotational driving force generated by the driving source 23. In a state where the roller vs. 22 and the drive source 23 are connected and the drive source 23 does not generate a rotational driving force, a load is applied to the rotation of the roller vs. 22 and the rotation of the roller vs. 22 is regulated.

FIG. 7 is a schematic view showing a state in which the roller pair 22 and the drive source 23 are cut off by the drive cutoff unit 24. The driving force transmission path d is cut off by the drive blocking unit 24, and the roller pair 22 is cut off from the drive source 23, so that the roller pair 22 can idle without being loaded by the drive source 23.

In the present embodiment, the drive source 23 is a stepping motor. The drive cutoff unit 24 is an electromagnetic clutch. In the present embodiment, the stepping motor and the electromagnetic clutch constitute the brake 19. The rotation of the roller vs. 22 is regulated by connecting the drive source 23 and the roller vs. 22 by the drive cutoff unit 24 and exciting the stepping motor to apply a load to the roller vs. 22. By turning on / off the electromagnetic clutch, the connection (clutch ON) and disconnection (clutch OFF) between the roller pair 22 and the stepping motor can be easily switched.

FIG. 8 is a diagram showing a state in which the booklet S is conveyed by the conveying unit 10 in the conveying direction DR1 and pressed against the roller pair 22. The roller pair 22 is formed with a nip portion N in which the outer peripheral surfaces P of the roller pair 22 come into contact with each other. 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 nip portion N. At this time, the rotation of the roller vs. 22 is regulated by turning on the electromagnetic clutch, connecting the roller pair 22 to the stepping motor, and exciting the stepping motor. Since the rotation of the roller vs. 22 is restricted, even if the tip T is pressed against the nip portion N, the booklet S is not transported to the downstream side of the transport direction DR1 with respect to the roller pair 22. The nip portion N of the roller vs. 22 is in a state of sandwiching the tip T, and the transport portion 10 conveys the booklet S in this state, so that the number of sheets of paper is bisected inside the booklet S. A space R is formed at the position. At this time, the transport unit 11 is on standby outside the paper passing path c.

FIG. 9 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 transporting portion 11 can be inserted is formed inside the booklet S. 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 passing 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. 10 is a diagram showing a state in which the transport unit 11 inserted in the space R moves in the transport direction DR1. The drive unit 15 moves the transport unit 11 in the transport direction DR1. At this time, by turning off the electromagnetic clutch and shutting off the roller pair 22 from the stepping motor, the roller pair 22 idles. The brake 19 (stepping motor and electromagnetic clutch) idles the roller pair 22 while the drive unit 15 moves the transport unit 11 toward the downstream side of the transport direction DR1.

When the transporting portion 11 inserted into the space R moves along the transporting direction DR1, the transporting portion 11 comes into contact with the throat portion D located on the back side of the tip T. The transport unit 11 in contact with the throat portion D passes between the roller pairs 22 and transports the booklet S in the transport direction DR1. At this time, the transport unit 10 is idling.

FIG. 11 is a diagram showing a state before the booklet S is fixed by the grip portion 13. The transport unit 10 and the roller pair 22 are idling. The transport unit 11 transports the booklet S from the upstream side to the downstream side of the transport direction DR1 with respect to the roller pair 22, and causes the booklet S to pass the roller pair 22. Since the tip T located on the back side of the throat portion D is guided by the transport portion 11 and transported along the transport direction DR1, the booklet S maintains the position of the tip T and the posture of the booklet S, and the roller pair 22 Will be able to pass through. The transport unit 11 further transports the tip T of the booklet S to a position slightly downstream of the transport direction DR1 with respect to the grip portion 13. The transport unit 11 stops at that position, and the booklet S also stops accordingly.

FIG. 12 is a diagram showing a state in which the transporting portion 11 is pulled out from the booklet S along the booklet width direction DR3 before the booklet S is fixed by the gripping 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 is pulled out from the booklet S along the booklet width direction DR3 and retracts to the outside of the paper passage path c. Before the transport unit 11 is pulled out of the booklet S, the electromagnetic clutch is turned on, the roller pair 22 is connected to the stepping motor, and the stepping motor is excited to regulate the rotation of the roller pair 22. The brake 19 (stepping motor and electromagnetic clutch) regulates the rotation of the roller vs. 22 when the drive unit 15 moves the transport unit 11 along the booklet width direction DR3 and pulls out the transport unit 11 from the booklet S. By restricting the rotation of the roller vs. 22, the posture of the booklet S does not shift when the drive unit 15 moves the transport unit 11 along the booklet width direction DR3 and pulls out the transport unit 11 from the booklet S. ..

FIG. 13 is a diagram showing a state in which the booklet S is fixed by the grip portion 13. After the transport portion 11 is pulled out in the booklet width direction DR3, the grip portion 13 moves in the direction approaching the booklet S along the thickness direction DR2. 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. 14 is a diagram showing a state in which the booklet S is subjected to a 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.

FIG. 15 is a diagram showing a state in which the booklet S subjected to the square fold process is conveyed. The grip portion 13 moves in a direction away from the booklet S along the thickness direction DR2 to release the fixing of the booklet S. The booklet processing unit 14a retracts to the outside of the paper passing path c. By driving the stepping motor while the electromagnetic clutch is ON, the roller pair 22 is rotationally driven to transport the booklet S after the square fold process to the downstream of the transport direction DR1.

4 to 15 show the flow until the booklet S is square-folded. 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. 16 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 roller pair 22, 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 at a position where the edge K is slightly upstream of the grip portion 13 in the transport direction DR1. Similar to 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.

<Effect>
The functions and 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 roller pair 22, a transport unit 11, a drive unit 15, and a brake 19. The roller pair 22 sandwiches the saddle-stitched or saddle-folded booklet S from both sides of the DR2 in the thickness direction. The transport unit 11 transports the booklet S by moving while being sandwiched between the booklets S. The drive unit 15 moves the transport unit 11 in the transport direction DR1 and the booklet width direction DR3. The brake 19 idles the roller pair 22 while the drive unit 15 moves the transport unit 11 toward the downstream side of the transport direction DR1. The brake 19 regulates the rotation of the roller pair 22 when the drive unit 15 moves the transport unit 11 along the booklet width direction DR3 and pulls out the transport unit 11 from the booklet S.

While the drive unit 15 moves the transport unit 11 toward the downstream side in the transport direction DR1, the brake is released and the rollers vs. 22 idle, so that the transport unit 11 transports the booklet S downstream in the transport direction DR1. However, it can be avoided that it is hindered by the roller pair 22.

By operating the brake and restricting the rotation of the roller vs. 22, the movement of the booklet S with respect to the roller vs. 22 is restricted. With a simple configuration in which a brake 19 that regulates the rotation of the roller vs. 22 is provided, when the transport unit 11 is moved along the booklet width direction DR3 and the transport unit 11 is pulled out from the booklet S, the deviation of the posture of the booklet S is suppressed. be able to.

As shown in FIGS. 10 and 11, the transport unit 11 transports the booklet S from the upstream side to the downstream side of the transport direction DR1 with respect to the roller pair 22. Since the booklet S passing through the roller pair 22 is transported by the transport unit 11, the booklet S can be passed through the roller pair 22 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 booklet processing unit 1 includes a drive source 23 and a drive cutoff unit 24. The drive source 23 drives the roller pair 22. The drive cutoff unit 24 is provided in the drive force transmission path d for transmitting the power from the drive source 23 to the roller pair 22. By shutting off the drive source 23 and the roller pair 22, the roller pair 22 can idle without being loaded by the drive source 23. By connecting the drive source 23 and the roller vs. 22, a load can be applied to the roller vs. 22 to regulate the rotation of the roller vs. 22.

The drive source 23 has a motor. As a result, the motor can apply a holding torque to the roller pair, and can give a large load to the roller pair. In this embodiment, a stepping motor is used. By exciting the stepping motor, a large holding torque can be obtained, and a larger load can be applied to the roller pair 22.

The drive cutoff unit 24 has an electromagnetic clutch. In this case, the connection and disconnection between the drive source 23 and the roller pair 22 can be easily switched by switching between energization and de-energization of the electromagnetic clutch.

As shown in FIGS. 14 and 16, the booklet processing unit 1 further includes a booklet processing unit. The booklet processing unit performs booklet processing on the booklet S which is transported by the transporting unit 11 and pulled out along the booklet width direction DR3. By fixing the booklet S 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. By fixing the booklet S to the grip portion 13 in a state where the position of the tip T is appropriately adjusted, the square fold process can be appropriately performed. Further, by fixing the booklet S to the grip portion 13 in a state where the posture of the booklet S is appropriately adjusted, it is possible to perform the edge cutting process without making the cutting portion slanted.

The booklet processing unit 1 further includes a transport unit 10. The transport unit 10 is arranged on the upstream side of the transport direction DR1 with respect to the roller pair 22, and transports the booklet S along the transport direction DR1 with the binding portion B or the folded portion of the booklet S as the tip T. When the tip T of the booklet S transported by the transport unit 10 is pressed against the roller pair 22, the brake 19 regulates the rotation of the roller pair 22.

When the transport portion 10 pushes the tip T into the nip portion N of the roller pair 22, the nip portion N is in a state of sandwiching the tip T. In that state, the transport unit 10 transports the booklet S along the transport direction DR1 to form a space R inside the booklet S. This makes it possible to easily insert the transport unit 11 inside the booklet S.

The paper post-processing device 200 includes a booklet processing unit 1 and a saddle stitching unit 300 for creating a booklet S. By fixing the booklet S 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, it is possible to realize a paper post-processing device capable of appropriately performing the booklet processing.

As a modification, the brake 19 is not limited to the electromagnetic clutch and the stepping motor, and may be any brake such as a disc brake. The booklet processing unit 1 may include both a motor and a clutch and a disc brake. 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.

Although the paper post-processing device 200 that employs the knife bundle folding method has been described above, the present invention can also be applied to the paper post-processing device that employs the saddle-hanging method.

As described above, the above-described embodiment disclosed this time is an example in all respects and is not restrictive. 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 Pamphlet processing unit, 10 transport section, 11 transport section, 12 collision section, 13 grip section, 14a, 14b booklet processing section, 15 drive section, 18 rotation adjustment section, 20 roller pair, 22 roller pair, 23 drive source, 24 Drive cutoff, 50 booklet tray, 100 image forming device, 101 paper feed tray, 102 paper feed roller, 103, 104, 107 transport roller, 105 fixing device, 106 cooling device, 200 paper aftertreatment device, 201 transport roller, 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 passing path, d driving force transmission path, DR1 transport direction, DR2 thickness direction, DR3 booklet width direction.

Claims (11)

A pair of rollers that sandwich a saddle-stitched booklet or a saddle-folded booklet from both sides in the thickness direction of the booklet,
A transport unit that transports the booklet by moving while being sandwiched between the booklets.
The transport unit is configured to move in both the transport direction of the booklet transported by the transport unit and the booklet width direction orthogonal to the transport direction and the thickness direction, and is configured to move the transport unit in one direction in the booklet width direction. The transport unit is moved to sandwich the transport unit in the booklet, and the transport unit is moved in the other direction in the width direction of the booklet to pull out the transport unit from the booklet .
While the drive unit moves the transport unit toward the downstream side in the transport direction, the roller pair is idled, and when the drive unit pulls out the transport unit from the booklet, the rotation of the roller pair is restricted. A booklet processing unit equipped with a brake to be used. The booklet processing unit according to claim 1, wherein the transport unit transports the booklet from the upstream side to the downstream side in the transport direction with respect to the roller pair. The booklet process according to claim 1 or 2, further comprising a drive source for driving the roller pair and a drive cutoff unit provided in a drive force transmission path for transmitting power from the drive source to the roller pair. unit. The booklet processing unit according to claim 3, wherein the drive blocking unit blocks the driving force transmission path while the driving unit moves the transport unit toward the downstream side in the transport direction. Claim 3 or claim 4 in which the drive cutoff unit connects the drive force transmission path when the drive unit moves the transport unit along the booklet width direction and pulls out the transport unit from the booklet. Booklet processing unit described in. The booklet processing unit according to any one of claims 3 to 5, wherein the drive source has a motor. The booklet processing unit according to any one of claims 3 to 6, wherein the drive cutoff unit has an electromagnetic clutch. The booklet processing unit according to any one of claims 1 to 7, further comprising a booklet processing unit that performs booklet processing on the booklet that has been transported by the transport unit and from which the transport unit has been removed. The booklet processing unit according to claim 8, wherein the booklet processing unit performs at least one of a small-edge cutting process and a square fold process. A transport unit that is arranged upstream of the roller pair in the transport direction and that transports the booklet along the transport direction with the binding portion of the saddle-stitched booklet or the folded portion of the saddle-folded booklet as the tip. With
The one according to any one of claims 1 to 9, wherein when the tip of the booklet conveyed by the conveying unit is pressed against the roller pair, the brake regulates the rotation of the roller pair. Booklet processing unit. A paper post-processing apparatus comprising the booklet processing unit according to any one of claims 1 to 10 and a saddle stitching unit for producing the booklet.

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