JP2014058368A - Paper binding device, paper processing device and image forming system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a paper binding device capable of suppressing sticking of a paper bundle to which crimp binding is applied onto an unevenly-shaped crimp member, a paper processing device including the paper binding device, and an image forming system including the paper processing device.SOLUTION: In a paper binding device such as a crimp binding device of a crimp binding system for binding a paper bundle such as a paper bundle P by a crimp member such as a pair of crimp teeth 30a, 30b each having an uneven shape, paper peeling means such as a paper peeling member 40a for peeing a paper stuck onto the crimp member is provided.

Description

  The present invention relates to a paper binding device that performs binding processing on paper, a paper processing device including the paper binding device, and an image forming system including the paper processing device.

  2. Description of the Related Art Conventionally, as an image forming system, there is known an image forming system including a sheet processing apparatus provided with a sheet binding apparatus that performs a binding process on a sheet bundle on which an image is formed by an image forming apparatus.

  In the paper processing apparatus described in Patent Document 1, paper fibers are entangled by strongly meshing a bundle of paper with a crimping tooth that is a crimping member having a pair of concave and convex shapes without using a metal needle. There is provided a paper-binding device of a pressure-binding type that binds a paper bundle by pressure bonding. By binding the sheet bundle by crimping without using the metal needle, it is possible to save the trouble of removing the metal needle from the sheet bundle when discarding the sheet bundle or applying a shredder.

  However, when a sheet bundle is strongly meshed with a pair of crimp teeth having a concavo-convex shape, a strong pressurizing force is required, which causes a problem that the sheet bundle subjected to crimp binding sticks to the crimp tooth. . Thus, if the paper sticks to the pressure-bonding teeth, there is a risk of paper jamming, paper damage, or, in the worst case, damage to the device.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a sheet binding device that can suppress sticking of a bundle of sheets subjected to crimp binding to a crimp member having an uneven shape, and the sheet binding device. It is to provide a sheet processing apparatus provided and an image forming system including the sheet processing apparatus.

  In order to achieve the above object, the invention according to claim 1 is a paper-binding device that peels off a paper stuck to the pressure-bonding member in a paper-binding device of a pressure-binding method that binds a paper bundle by a pair of pressure-bonding members having an uneven shape. Is provided.

  In the present invention, the paper stuck on the concave and convex crimping member can be peeled off from the crimping member by the paper peeling means. Thereby, it is possible to prevent the sheet bundle subjected to the crimping binding from sticking to the crimping member. Therefore, it is possible to prevent the sheet bundle from sticking to the pressure-bonding member and causing the paper jam, the paper damage, the paper binding device, or the like.

  As described above, according to the present invention, there is an excellent effect that the sheet bundle subjected to the crimping binding can be prevented from sticking to the uneven crimping member.

FIG. 5 is a diagram used for explaining a sheet peeling operation in the crimping and binding device of Configuration Example 1; 1 is a schematic configuration diagram of an image forming system including an image forming apparatus and a sheet post-processing apparatus. The figure used for description of a crimping binding apparatus. The figure which shows the crimping | compression-bonding tooth | gear and paper peeling member of the crimping | compression-bonding apparatus which concerns on the structural example 1. FIG. FIG. 6 is a diagram used for explaining another example of the sheet peeling operation in the crimping and binding device of Configuration Example 1. FIG. 10 is a diagram used for explaining still another example of the sheet peeling operation in the crimping and binding device of Configuration Example 1; The figure which shows the crimping | compression-bonding tooth | gear and paper peeling member of the crimping | bonding binding apparatus which concern on the example 2 of a structure. FIG. 6 is a diagram used for explaining a sheet peeling operation in the crimping and binding device of Configuration Example 2. FIG. 6 is a diagram illustrating a pressure-bonding tooth and a sheet peeling member of a pressure-binding device according to Configuration Example 3. The figure which shows the crimping | compression-bonding tooth | gear and paper peeling member of the crimping | bonding binding apparatus which concern on the example 4 of a structure.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 2 is a schematic configuration diagram of an image forming system including the image forming apparatus 200 and the sheet post-processing apparatus 100. The sheet post-processing apparatus 100 installed on the side of the sheet discharge side of the image forming apparatus 200 is provided with a receiving port 1 for receiving the sheet conveyed from the image forming apparatus 200, and an inlet roller 2 is disposed downstream of the receiving port 1. And a relay roller 3 is provided further downstream.

  A perforation unit 4 is provided between the entrance roller 2 and the relay roller 3 and is controlled by a not-illustrated perforation processing control unit to perforate the sheet.

  The paper post-processing apparatus 100 has a plurality of transport paths. In the paper post-processing apparatus 100 shown in FIG. 2, a straight transport path for discharging the paper transported from the image forming apparatus 200 to the first paper discharge tray 8 as it is. 101, an end binding conveyance path 102 for performing edge binding on a sheet, and a saddle stitch conveyance path 103 for performing saddle stitching on a sheet.

  A first branch claw 5 is provided immediately after the relay roller 3 to switch between a straight conveyance path 101 provided in the horizontal direction and an end binding conveyance path 102 provided in the downward direction.

  The straight conveyance path 101 is provided with a straight conveyance roller 6, and further, a first paper discharge roller 7 is provided further downstream.

  A first paper discharge tray 8 is provided downstream of the first paper discharge roller 7, and sheets discharged by the first paper discharge roller 7 are stacked.

  A plurality of end binding transport rollers 9 are provided in the end binding transport path 102, and a stacking tray 10 is provided further downstream.

  The stacking tray 10 is provided with a sheet alignment jogger 11 that aligns the width direction of the sheets stacked on the stacking tray 10.

  Further, an end binding crimping binding portion 12 is provided in the vicinity of the stacking tray 10, and is controlled by an end binding crimping binding control unit (not shown) to perform binding processing at a predetermined position on the sheet.

  A second branch claw 13 is provided downstream of the end binding conveyance path 102 to switch between the straight conveyance path 101 provided above and the saddle stitch conveyance path 103 provided below.

  A plurality of saddle stitch conveyance rollers 14 are provided in the saddle stitch conveyance path 103, and a saddle stitch reference fence 15 that is movable in accordance with the sheet size is provided downstream.

  A middle folding blade 16 is provided above the saddle stitching reference fence 15, and a middle folding roller 17 is provided at a position facing the middle folding blade 16.

  Further, a saddle stitch crimping binding portion 18 is provided between the saddle stitch reference fence 15 and the middle folding blade 16, and is controlled by a saddle stitch crimping control unit (not shown) to perform a binding process at a predetermined position on the sheet. ing.

  A second paper discharge roller 19 is provided downstream of the center folding roller 17, and a second paper discharge tray 20 is provided further downstream, on which the paper discharged by the second paper discharge roller 19 is stacked.

Next, the operation of the sheet post-processing apparatus 100 having such a configuration will be described.
For example, when performing edge binding, a sheet printed by the image forming apparatus 200 passes through a paper discharge port of the image forming apparatus 200 (not shown) and then the receiving port 1 of the sheet post-processing apparatus 100, and the sheet post-processing apparatus 100. It is conveyed to.

  The sheet conveyed to the sheet post-processing apparatus 100 is conveyed by the entrance roller 2 and then the relay roller 3, and is conveyed to the end binding conveyance path 102 provided below by the action of the first branch claw 5.

  The sheet transported to the end binding transport path 102 is transported further downstream by the end binding transport roller 9 and stacked on the stacking tray 10.

  When the stacked sheets are aligned in the width direction by the sheet aligning jogger 11 and a specified number of sheets are stacked, the sheets are bound to a predetermined position on the sheet by the end binding crimping binding unit 12 controlled by the crimping binding control unit (not shown). Processing is performed.

  The sheet bundle subjected to the edge binding process is conveyed downstream, and is conveyed to the straight conveyance path 101 by the action of the second branching claw 13.

  The sheet bundle conveyed to the straight conveyance path 101 is discharged and stacked on the first paper discharge tray 8 by the straight conveyance roller 6 and then the first paper discharge roller 7.

  On the other hand, when saddle stitching is performed, the sheet is transported to the stacking tray 10 and then transported further downstream without being stacked on the stacking tray 10 in the same manner as when performing end-stitching. 13 is transported to the saddle stitch transport path 103.

  The sheet conveyed to the saddle stitch conveyance path 103 is further conveyed downstream by the saddle stitch conveyance roller 14 and is abutted and accumulated on the saddle stitch reference fence 15 provided at the end of the saddle stitch conveyance path 103.

  When the designated number of sheets are stacked, the saddle stitch press binding unit 18 controlled by the saddle stitch press binding control means (not shown) performs a binding process at a predetermined position on the sheets.

  The sheet bundle subjected to the saddle stitching process is lifted up to a position determined for each sheet size by the saddle stitching reference fence 15 and subjected to the middle folding process by the middle folding blade 16 and the middle folding roller 17.

  The sheet bundle subjected to the folding process is discharged and stacked on the second discharge tray 20 by the second discharge roller 19.

  Here, the crimping and binding apparatus which is the sheet binding means of the crimping and binding method will be described with reference to FIG. In the crimping and binding apparatus, a pair of crimped teeth 30a and 30b having tooth shapes that are concave and convex are provided movably at a position that is perpendicular to and opposed to the sheet bundle P.

  When performing the crimping binding, first, the printed paper is stacked between the crimping teeth 30a and 30b facing each other at a predetermined interval as shown in FIG. When the designated number of sheets is stacked between the crimping teeth, the crimping teeth 30a and 30b move in the direction of the sheet bundle to sandwich the sheet bundle P as shown in FIG. 3 (b), as shown in FIG. 3 (c). The pressure-bonding teeth 30a and 30b are engaged with each other to pressurize the paper. When crimping and binding is performed with a predetermined pressure and pressing time, the crimping teeth 30a and 30b move away from each other in the direction of separation as shown in FIG. To do.

  To the sheet bundle P bound by the pressure-bonding method, the tooth shape of the pressure-bonding teeth 30a and 30b is transferred, and the binding force is maintained by fitting the unevenness of the tooth shape and entanglement of paper fibers between the sheets.

  Next, features of the sheet post-processing apparatus 100 according to the present embodiment will be described.

[Configuration example 1]
As shown in FIG. 4A, in the crimping binding device of this configuration example, the sheet of the sheet peeling device that peels the sheet stuck to the crimping tooth 30a on the crimping tooth 30a provided on the upper side of the pair of crimping teeth. A peeling member 40a is provided. The crimping tooth 30a and the sheet peeling member 40a are configured to be movable by being controlled by a control unit and a driving unit (not shown), respectively.

  The crimping tooth 30b provided on the lower side of the pair of crimping teeth shown in FIG. 4 (b) includes a tooth pattern that is paired with the tooth pattern of the crimping tooth 30a shown in FIG. In the apparatus, it is provided at a position facing the crimping tooth 30a shown in FIG.

  Further, similarly to the crimping tooth 30a shown in FIG. 4A, a sheet peeling member 40b for peeling the sheet stuck to the crimping tooth 30b is provided. The crimping tooth 30b and the sheet peeling member 40b are configured to be movable by being controlled by a control unit and a driving unit (not shown), respectively.

  The paper peeling member 40a and the paper peeling member 40b of the paper peeling device that peels off the paper stuck to the pressure-bonding teeth 30a and the pressure-bonding teeth 30b may be provided on at least one of the pressure-bonding teeth 30a and the pressure-bonding teeth 30b. However, it is desirable that the sheet peeling members 40a and 40b are provided on both the crimping tooth 30a and the crimping tooth 30b.

  The sheet peeling operation in the crimping and binding device of this configuration example will be described with reference to FIG. FIG. 1A shows a state in which the pressure-bonding teeth 30a and 30b are separated from each other while the sheet bundle P is stuck to the pressure-bonding teeth 30a after performing the pressure-binding to the sheet bundle P by the pressure-binding device.

  With the sheet bundle P stuck to the crimping tooth 30a, as shown in FIG. 1B, the sheet peeling member 40a is controlled by the control means and the drive means (not shown) to move in the sheet bundle direction. As a result, a force in a direction away from the crimping tooth 30a is applied from the sheet peeling member 40a to the sheet bundle P, and the sheet bundle P can be peeled from the crimping tooth 30a.

  With reference to FIG. 5, another example of the sheet peeling operation in the crimping and binding device of this configuration example will be described. FIG. 5A shows a state immediately after the crimping and binding is performed on the sheet bundle P by the crimping and binding apparatus. At this time, the sheet bundle P is stuck to the crimping tooth 30a located above.

  After the crimping and binding, only the crimping teeth 30a are withdrawn from the sheet bundle P as shown in FIG. At this time, since the sheet bundle P is pressed by the sheet peeling member 40a, the sheet bundle P can be peeled from the crimping tooth 30a.

  Next, as shown in FIG. 5C, the sheet peeling member 40 a holding the sheet bundle P and the crimping teeth 30 b positioned below the sheet bundle P are retracted from the sheet bundle P, thereby separating the sheet. Is completed.

  A further example of the sheet peeling operation in the crimping and binding device of the present configuration example will be described with reference to FIG. FIG. 6A shows a state immediately after the crimping and binding is performed on the sheet bundle P by the crimping and binding apparatus. At this time, the sheet bundle P is stuck to the crimping tooth 30a located above.

  After the crimping and binding, the crimping teeth 30a and 30b and the sheet peeling member 40a are retracted from the sheet bundle P as shown in FIG. At this time, the speed at which the crimping tooth 30a retracts from the sheet bundle P is set to be faster than the speed at which the sheet peeling member 40a retracts from the sheet bundle P.

  As a result, as shown in FIG. 6B, while the crimping tooth 30a and the sheet peeling member 40a are retracted, the sheet peeling member 40a protrudes from the crimping tooth 30a in the sheet bundle direction. Therefore, the paper peeling member 40a exerts a force for pushing the paper bundle P in the paper peeling direction, so that the paper bundle P can be peeled from the crimping tooth 30a.

  In addition, the order in which the crimping tooth 30a and the sheet peeling member 40a start to retract from the sheet bundle P may be either, but it is most preferable that the crimping tooth 30a and the sheet peeling member 40a start to retract simultaneously. Next, it is preferable that the crimping tooth 30a starts to be retracted before the sheet peeling member 40a.

  Further, in addition to the effect of the configuration example 1, since the crimping tooth retracting operation and the sheet peeling operation can be performed at the same time, the productivity of the sheet binding process can be improved.

[Configuration example 2]
As shown in FIG. 7A, the crimping tooth 30a of the present configuration example is provided with a sheet peeling device in which a plurality of extrusion pins 41 that can protrude from the crimping tooth surface 31a are provided on the substrate 42. The crimping tooth 30a and the sheet peeling apparatus are configured to be movable by being controlled by a control unit and a driving unit (not shown), respectively.

  When crimping and binding the sheet bundle P, as shown in FIG. 7B, the sheet peeling device is controlled by a control unit and a driving unit (not shown), and the substrate 42 is in a position where the push pin 41 is retracted from the crimping tooth surface 31a. It is comprised so that it may move and wait.

  The sheet peeling operation in the crimping and binding device of this configuration example will be described with reference to FIG. FIG. 8A shows a state where the crimping teeth 30a and 30b are separated from each other while the sheet bundle P is stuck to the crimping tooth 30a after the crimping and binding is performed on the sheet bundle P. At this time, the sheet peeling apparatus waits by moving the substrate 42 to a position where the push pin 41 is retracted from the crimp tooth surface 31a.

  Next, as shown in FIG. 8B, when the substrate 42 of the paper peeling device is controlled by the control means and the driving means (not shown) and moves in the paper bundle direction, the pushing pin 41 of the paper peeling device is crimped by the crimping teeth 30a. It protrudes from the tooth surface 31a. As a result, the sheet bundle P is pushed by the push pin 14, and a force in a direction away from the crimping tooth 30a is applied to the sheet bundle P, and the sheet bundle P can be peeled off from the crimping tooth 30a.

  In this configuration example, the push pin 41 of the paper peeling device protrudes from the pressure-bonding tooth surface 31a to which the paper bundle P is strongly stuck and pushes out the paper bundle P, so that the paper bundle P can be efficiently peeled off from the pressure-bonding teeth 30a. .

[Configuration example 3]
As shown in FIG. 9A, the sheet peeling apparatus of this configuration example forms a part of the crimp tooth surface 31a, and a plurality of push-out teeth 43 that can protrude from the crimp tooth surface 31a are provided on the substrate 44. Yes. The crimping tooth 30a and the substrate 44 of the sheet peeling device are configured to be movable by being controlled by a control means and a driving means (not shown), respectively.

  The push-out teeth 43 of the paper peeling device function as pressure-bonding teeth for binding the paper bundle P together with the pressure-bonding teeth 30a when performing pressure-bonding. It is configured to be movable.

  On the other hand, when the push-out teeth 43 function as a paper peeling device for peeling the paper bundle P from the crimping teeth 30a, as shown in FIG. 9A, the substrate 44 of the paper peeling device is controlled by control means and driving means not shown. Then, the push-out teeth 43 are configured to protrude from the crimp tooth surface 31a.

  The sheet peeling apparatus of this configuration example is the same except that the push pin 41 of the sheet peeling apparatus of Configuration Example 2 is replaced with the pushing teeth 43, and the sheet peeling operation is also the same, so that the description thereof is omitted.

  Further, in this configuration example, in addition to the effect of the configuration example 2, the push-out teeth 43 of the paper peeling device are pushed out in the paper peeling direction along the shape of the crimp binding applied to the paper, so that the paper is scratched or dented. The sheet bundle P can be peeled off from the crimping tooth 30a without any problem.

[Configuration Example 4]
The sheet peeling device of this configuration example includes a plurality of air holes 45 provided on the crimping teeth 30a as shown in FIG. 10 and communicating with the substrate 46, and a blower (not shown) for ejecting air from these air holes 45. Have.

  After crimping and binding the sheet bundle P by the crimping and binding apparatus, air blown from a blower (not shown) of the sheet peeling apparatus is jetted toward the sheet bundle P through the air hole 45 provided in the crimping tooth 30a. Thereby, the sheet bundle P stuck to the crimping tooth 30a can be peeled off from the crimping tooth 30a by the wind pressure of the air ejected from the air hole 45.

  In this way, the sheet bundle P is pushed out in the sheet peeling direction without touching the sheet bundle P stuck to the crimping teeth 30a by the wind pressure of the air, so that the sheet bundle P is removed from the crimping teeth 30a without damaging the sheet. Can be peeled off.

  Up to now, the crimping and binding device described in the configuration example 1 to the configuration example 4 can be mounted on at least one of the end binding and binding portion 12 and the saddle stitching and binding portion 18 of the sheet post-processing apparatus 100 illustrated in FIG. it can. As a result, since the crimping and binding are automatically performed under the control of the control means and the driving means (not shown), it is possible to continuously bind the sheets to the sheet bundle P without bothering the operator.

What has been described above is merely an example, and the present invention has a specific effect for each of the following modes.
(Aspect A)
In a sheet binding apparatus such as a crimping binding apparatus that binds a sheet bundle such as a sheet bundle P by a crimping member such as a pair of crimping teeth 30a and 30b having a concavo-convex shape, a sheet that peels off the paper stuck to the crimping member Paper peeling means such as a peeling member 40a was provided. According to this, as described in the above embodiment, it is possible to suppress the sheet bundle subjected to the crimping binding from sticking to the uneven crimping member.
(Aspect B)
In (Aspect A), the sheet peeling means such as the push pin 41 is provided in the pressure-bonding member, and the sheet peeling means is retracted from the surface of the pressure-bonding member facing the sheet bundle when the pressure-binding is performed. The sheet peeling means moves to a position protruding from the front surface after waiting in position and completing the crimping binding and retracting the crimping member from the sheet bundle. According to this, as described in the above embodiment, the sheet crimping binding portion that is strongly attached to the crimping member is directly pushed out in the sheet peeling direction, so that the sheet can be efficiently peeled from the crimping member.
(Aspect C)
In (Aspect B), the sheet peeling means such as the push-out teeth 43 forms a part of the surface such as the pressure-bonding tooth surface 31a facing the sheet bundle of the pressure-bonding member. According to this, as described in the above embodiment, the paper peeling means pushes the paper sticking to the crimping member along the shape of the surface in the paper peeling direction, so that the paper is scratched or dented. And the sheet can be peeled off from the crimping member.
(Aspect D)
In (Aspect A), the sheet peeling means includes an ejection hole such as an air hole 45 provided in the pressure-bonding member, and gas ejection means such as an air blower that ejects gas from the ejection hole. In addition, after the crimping binding is completed and the crimping member is retracted from the sheet bundle, gas is ejected from the ejection holes by the gas ejection means. According to this, as described in the above embodiment, the paper is pushed in the paper peeling direction without touching the paper stuck to the pressure-bonding member by the wind pressure of the gas ejected from the ejection hole, so that the paper is damaged. The sheet can be peeled off from the crimping member.
(Aspect E)
In (Aspect A), after the crimping and binding are completed, the crimping member is first retracted from the sheet bundle, and then the sheet peeling means is retracted from the sheet bundle. According to this, as described in the above embodiment, since the crimping member is retracted from the sheet bundle while the sheet bundle is pressed by the sheet peeling means, the sheet can be peeled off from the crimping member.
(Aspect F)
In (Aspect A), the speed at which the crimping member retracts from the sheet bundle after the crimping binding is completed is faster than the speed at which the sheet peeling unit retracts from the sheet bundle after the crimping binding is completed. According to this, as described in the above embodiment, the paper peeling means protrudes in the paper bundle direction rather than the crimping member while retreating from the paper bundle, and the force for pushing the paper in the paper peeling direction acts on the paper. Can be peeled off from the crimping member. Further, since the retracting operation of the crimping member and the sheet peeling operation can be performed at the same time, the productivity of the sheet binding process can be improved.
(Aspect G)
In a sheet processing apparatus such as the sheet post-processing apparatus 100 that includes at least a sheet binding unit that performs a binding process on a sheet bundle, as the sheet binding unit, (Aspect A), (Aspect B), (Aspect C), ( The sheet binding apparatus of Aspect D), (Aspect E) or (Aspect F) was used. According to this, as described in the above-described embodiment, it is possible to prevent the sheet bundle subjected to the crimping and binding from sticking to the concavo-convex-shaped crimping member, and continuously without causing a paper jam or damage to the sheet. Thus, the sheet binding process can be performed.
(Aspect H)
An image forming system including an image forming apparatus such as an image forming apparatus 200 that forms an image on a sheet, and a binding processing apparatus that performs a binding process on a bundle of sheets on which images are formed by the image forming apparatus. As the binding processing apparatus, the sheet binding apparatus of (Aspect A), (Aspect B), (Aspect C), (Aspect D), (Aspect E) or (Aspect F) was used. According to this, as described in the above-described embodiment, it is possible to prevent the sheet bundle subjected to the crimping and binding from sticking to the concavo-convex-shaped crimping member, and continuously without causing a paper jam or damage to the sheet. Thus, the sheet binding process can be performed.

DESCRIPTION OF SYMBOLS 1 Reception port 2 Entrance roller 3 Relay roller 4 Punching part 5 1st branch nail | claw 6 Straight conveyance roller 7 1st paper discharge roller 8 1st paper discharge tray 9 Edge binding conveyance roller 10 Stacking tray 11 Paper alignment jogger 12 Edge binding pressure binding Part 13 Second branch claw 14 Saddle stitch conveyance roller 15 Saddle stitch reference fence 16 Saddle folding blade 17 Saddle folding roller 18 Saddle stitch crimping part 19 Second delivery roller 20 Second delivery tray 30a Crimping tooth 30b Crimping tooth 31a Crimping Tooth surface 40a Paper peeling member 40b Paper peeling member 41 Extrusion pin 42 Substrate 43 Extrusion tooth 44 Substrate 46 Substrate 100 Paper post-processing device 101 Straight conveyance path 102 Edge binding conveyance path 103 Saddle stitch conveyance path 200 Image forming apparatus

WO2009 / 110298

Claims (8)

In the paper binding device of the crimping binding method that binds the paper bundle by a pair of crimping members having an uneven shape,
A paper binding apparatus comprising a paper peeling means for peeling the paper stuck to the crimping member. In the paper binding apparatus according to claim 1,
The paper peeling means is provided on the pressure-bonding member;
When the crimping binding is performed, the surface of the crimping member waits at a position where the sheet peeling means is retracted from the surface facing the sheet bundle, and after the crimping binding is completed and the crimping teeth are retracted from the sheet bundle, the surface A sheet binding device, wherein the sheet peeling means moves to a more protruding position. In the paper binding apparatus according to claim 2,
The sheet binding device, wherein the sheet peeling means forms a part of a surface of the crimping member facing the sheet bundle. In the paper binding apparatus according to claim 1,
The paper peeling means has a jet hole provided in the pressure-bonding member and from which gas is jetted, and gas jet means for jetting gas from the jet hole,
A paper binding apparatus, wherein after the crimping is completed and the crimping member is retracted from the paper bundle, gas is ejected from the ejection holes by the gas ejection means. In the paper binding apparatus according to claim 1,
The sheet binding apparatus, wherein after the crimping and binding is completed, the crimping member is first retracted from the sheet bundle, and then the sheet peeling unit is retracted from the sheet bundle. In the paper binding apparatus according to claim 1,
A sheet bundle binding apparatus, wherein a speed at which the crimping member retracts from the sheet bundle after the completion of the crimping binding is faster than a speed at which the sheet peeling unit retracts from the sheet bundle after the completion of the crimping binding. In a paper processing apparatus including at least paper binding means for performing a binding process on a paper bundle,
7. A sheet processing apparatus using the sheet binding apparatus according to claim 1, 2, 3, 4, 5 or 6 as the sheet binding means. An image forming apparatus for forming an image on paper;
An image forming system including a binding processing device that performs a binding process on a bundle of sheets on which images are formed by the image forming device.
An image forming system using the sheet binding device according to claim 1, as the binding processing device.

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