JP4151869B2 - Recording paper post-processing device of image forming apparatus - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording paper post-processing apparatus of an image forming apparatus that can be used by being attached to an image forming apparatus such as a copying machine, a facsimile machine, a printer, or a complex machine thereof, and particularly capable of performing saddle stitching processing on a bundle of recording paper.
[0002]
[Prior art]
A recording sheet alignment tray that bundles and aligns a plurality of recording sheets on which images are recorded by an image forming apparatus, and a saddle stitching processing unit that can perform a saddle stitching process on the aligned recording sheet bundle with a stapler. For example, JP-A-7-48062 is known as a recording paper post-processing apparatus.
[0003]
In this recording paper post-processing apparatus, a stapler provided at a predetermined distance on the surface side of the recording paper alignment tray is used as the saddle stitching processing means.
[0004]
The stapler used as the saddle stitching processing means fixes the center portion of the recording paper bundle between the recording paper alignment trays and directs the recording paper alignment tray toward the recording paper alignment tray so as to penetrate the recording paper bundle. A saddle stitching process is performed by driving a binding needle.
[0005]
[Problems to be solved by the invention]
By the way, this recording paper post-processing apparatus is provided with a guide member for guiding the recording paper conveyance direction when conveying the recording paper along the recording paper alignment tray toward the saddle stitching processing means. ing.
[0006]
This guide member is installed so as to guide the recording paper toward the stapler along the recording paper alignment tray surface side, but prevents the recording paper from jumping out of the recording paper alignment tray. Therefore, the recording paper alignment tray is installed in a state where the surface side of the recording paper alignment tray is closed from end to end except for the entrance / exit portion of the recording paper.
[0007]
Therefore, in this recording paper post-processing apparatus, when a paper jam occurs between the recording paper alignment tray and the saddle stitching processing means in the closed interior of the recording paper alignment tray, the recording of the paper jam is recorded. It is difficult to remove the paper.
[0008]
Therefore, in view of the above circumstances, the present invention can prevent a paper jam occurring between the recording paper alignment tray and the saddle stitching processing means, and even if a paper jam occurs in this portion, the recording is performed. It is an object of the present invention to provide a recording paper post-processing device of an image forming apparatus that can easily remove paper at a low cost.
[0009]
[Means for Solving the Problems]
Therefore, according to the first aspect of the present invention, a recording paper alignment tray that sequentially stacks and aligns recording sheets on which images are recorded by the image forming apparatus, and a saddle stitching process that is performed by a stapler at the center folding position of the recording sheet bundle. A recording paper post-processing apparatus of an image forming apparatus including a binding processing unit,
A main part containing main components for driving the binding needle of the saddle stitching processing means is attached to the back side opposite to the surface of the recording paper alignment tray on which the recording paper is stacked and aligned,
The binding needle driven in from the main part is configured to protrude from the back side to the front side of the recording paper alignment tray and pierce the recording paper bundle ,
When the saddle stitching processing operation is performed, the recording paper alignment tray is located near the saddle stitching position of the saddle stitching processing means so that the end portion for driving the staple of the main portion protrudes from the surface of the recording paper alignment tray. The front surface side is formed in a substantially square shape bent in a convex shape .
[0011]
According to a second aspect of the present invention, in the first aspect of the present invention, a recess that is recessed toward the back side is formed near the saddle stitching position of the saddle stitching processing means of the recording paper alignment tray. Is.
[0012]
The invention according to claim 3 is the invention according to claim 1 or 2 , wherein the stapler used as the saddle stitching processing means comprises:
A main portion having a stapler main body attached to the back side of the recording paper alignment tray, and a pusher that is rotatably attached to the stapler main body and from which a binding needle protrudes toward the aligned recording paper bundle;
A receiving portion having a clincher provided on the surface side of the recording paper alignment tray facing the pusher so as to be able to advance and retreat toward the recording paper alignment tray;
In this configuration, a bundle of recording sheets is sandwiched between the clincher and the pusher, and the saddle stitching process is performed.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the accompanying drawings.
FIG. 1 shows an overall schematic diagram of a recording paper post-processing apparatus of an image forming apparatus according to the present invention.
[0014]
The recording paper post-processing apparatus 1 of the image forming apparatus according to this embodiment is used by being attached to the image forming apparatus. As post-processing means, end face binding processing means 4, saddle stitching processing means 5, and center folding processing are performed. Means 6 are provided. On the other hand, all these post-processing means are installed so as to share the post-processing tray 3 which is a recording paper alignment tray. As the image forming apparatus of this embodiment, the copying machine 2 is used, but other than this, for example, a facsimile, a printer, and other appropriate devices can be used.
[0015]
An entrance guide plate 11 is provided between the recording paper post-processing apparatus 1 and the copying machine 2, and the recording paper on which an image has been recorded by the copying machine 2 is guided by the entrance guide plate 11 to It is sent into the processing device 1.
[0016]
The recording paper post-processing apparatus 1 is provided with conveying rollers 12A and 12B in the vicinity of the inlet guide plate 11, and a separation claw 13 that is operated by a solenoid (not shown) and sorts the conveying direction in the vicinity thereof. Yes. The separation claw 13 diverts the conveyance direction in two directions depending on whether or not post-processing is performed on the recording paper conveyed via the conveyance rollers 12A and 12B.
[0017]
In the recording paper post-processing apparatus 1 of this embodiment, when the recording paper on which an image is recorded is conveyed leftward in the horizontal direction in FIG. 1, the recording paper post-processing apparatus 1 shifts to a non-post processing mode in which no post processing is performed. The recording paper that has shifted to the non-post-processing mode is transported as it is along the substantially straight non-post-processing transport path α by the transport roller 12C and the paper discharge roller 12D, and is discharged to the outside of the recording paper post-processing apparatus 1. The Further, when the recording paper is conveyed downward, the post-processing mode is entered.
[0018]
That is, in the recording paper post-processing apparatus 1 of this embodiment, in the post-processing mode, this recording paper is substantially U via the conveying rollers 12E to 12G, the post-processing discharge roller 12H, and a guide plate (not shown). After being conveyed along the letter-shaped post-processing transport path β, it is discharged to the post-processing tray 3. The post-processing discharge roller 12H is integrally provided with a brush roller (not shown), and a tapping roller 12I is provided in the vicinity of the post-processing discharge roller 12H and downstream in the recording paper conveyance direction. Is provided.
[0019]
As shown in FIG. 2, the post-processing tray 3 includes a rear end reference fence 31 provided in parallel to the horizontal direction X and a jogger fence 32 provided in the Y direction orthogonal to the rear end reference fence 31. Yes. Prior to performing post-processing on the recording paper bundle P, the post-processing tray 3 aligns the lower end portion of the recording paper bundle P with the rear end reference fence 31 and also uses the jogger fence 32 operated by the jogger fence drive motor 32A. The left and right end portions of the recording paper bundle P are aligned.
[0020]
In the post-processing toilet 3 of the present invention, a conventional guide member serving as a guide when the recording paper bundle moves is not provided on the surface side along the post-processing toilet 3. That is, the surface side of the post-processing tray 3 is opened.
[0021]
Further, as shown in FIG. 3, a recess 33 is formed in the vicinity of the intermediate portion in the vertical direction in the post-processing toilet 3. Further, in the post-processing tray 3 of this embodiment, the lower side 3D portion with respect to the recess 33 is inclined by 75 ° with respect to the horizontal direction, and the upper side 3U is similarly inclined by 65 °. The overall shape is a substantially square shape (a shape in which the central portion protrudes in a convex shape). Note that these inclination angles are not particularly limited to those in this embodiment, and various suitable inclination angles may be used.
[0022]
Further, an endless belt (not shown) and a discharge claw 34 (see FIG. 8) attached to the endless belt and moving in the vertical direction along the postprocessing tray 3 are attached to the postprocessing tray 3. .
[0023]
The end face binding processing means 4 shown in FIG. 1 performs end face binding processing with a stapler in the vicinity of the lower end face of the recording paper bundle conveyed to the post processing tray 3 and aligned in the post processing tray 3. A stapler (not shown) is provided at the lower end of the post-processing tray 3 near the fence 31.
[0024]
Note that the lower side of the post-processing tray 3 provided with the end surface binding processing means 4 is directed toward the lower portion of the post-processing tray 3 by the staple discharge roller 12H and the guide plate or tapping roller 12I as described above. Since it is configured to feed out, a conventional guide member for guiding the end face binding processing means 4 is not particularly installed. Therefore, the lower part on the surface side of the post-processing tray 3 is also opened.
[0025]
The saddle stitching processing means 5 performs a saddle stitching process collectively with a pair of left and right staples at the center of the recording paper bundle conveyed to the post-processing tray 3 and aligned in the post-processing tray 3. As shown in FIG. 4, the saddle stitching processing means 5 of this embodiment includes a support member 51, an eccentric cam 52, and a saddle stitching stapler 53.
[0026]
As shown in FIG. 2, the support member 51 is suspended in a pivotable manner on a support shaft 51 </ b> A attached between the side wall surfaces 3 </ b> A standing on both sides of the post-processing tray 3. . The support member 51 is urged by an elastic force in a direction away from the post-processing tray 3 by a spring (not shown), for example, counterclockwise in FIG. 3 in this embodiment.
[0027]
The eccentric cam 52 is formed in a perfect circle shape, and is fixed to a rotating shaft 52A provided in parallel with the support shaft 51A. In particular, the mounting position of the rotating shaft 52A in the eccentric cam 52 is the center. It is in the vicinity of the peripheral edge deviated from. The distal end portion of the support member 51 is always in contact with the outer peripheral surface of the eccentric cam 52 by the elastic force of the spring described above.
[0028]
The rotation shaft 52A is rotatably attached to the side wall surface 3A, and is rotated by a cam driving motor 52B shown in FIGS. 3 is a trajectory drawn by the tip (free end) of the support member 51, that is, on the circumference of a constant radius centered on the support shaft 51A, and the post-processing tray 3 It is provided at a position separated from the recess 33 by a predetermined distance. Since this separation distance affects the number of sheets of recording paper bundle P that can pass, it is preferable to ensure a certain length.
[0029]
As shown in FIG. 3, the stapler 53 for saddle stitching processing maintains a predetermined interval (120 mm in this embodiment) in the vicinity of the recess 33 on the center side of the post-processing tray 3, and is attached to the rear end reference fence 31. Two are provided in parallel.
[0030]
The stapler 53 has a main part M of the saddle stitching processing means 5 for storing a staple and a main component for driving the binding needle, and a receiving part S provided separately from the main part M. is doing.
[0031]
Of these, the main part M is structurally complex and occupies most of the stapler in terms of volume, and when installed on the surface side of the post-processing tray 3, the conveyance of the recording paper passing therethrough Operation may be obstructed, and recording paper may be blocked and paper jams may occur. Therefore, in the present invention, the main part M is provided not on the front surface side of the post-processing tray 3 but on the back surface side.
[0032]
Specifically, as shown in FIG. 3, the main portion M includes a stapler main body 53A containing a pusher mechanism (not shown) such as a motor and a link, and the stapler main body 53A when binding the recording paper bundle P. And a pusher 53B that is pressed and pushed by the above-described pushing mechanism to pop out the binding needle.
[0033]
The stapler main body 53 </ b> A is fixed to the back surface side of the post-processing tray 3 above the portion where the recess 33 of the post-processing tray 3 is formed.
[0034]
The pusher 53B is attached to the stapler main body 53A so as to be able to advance and rotate in the direction of the clincher 53C. That is, the pusher 53B is rotatably connected to the stapler main body 53A by a rotation shaft 53D, and is usually retracted in a direction away from the clincher 53C and the post-processing tray 3 by an elastic force by a spring not shown. ing.
[0035]
In the case of performing the saddle stitching processing operation, the pusher 53B is pushed toward the clincher 53C as shown by a one-dot chain line in FIG. Advancing by being pressed, and the binding needle is pierced while the recording paper bundle P is sandwiched between the gap formed between the clincher 53C, that is, the binding portion 53E.
[0036]
On the other hand, the receiving portion S is provided on the surface side of the post-processing tray 3 so as to face the pusher 53B. In this embodiment, the clincher 53C provided so as to be able to advance and retract toward the surface side of the post-processing tray 3 is provided. I have. As shown in FIG. 3, the clincher 53C firmly fixes and holds the recording paper bundle P from the side opposite to the pusher 53B with respect to the recording paper bundle P, and has been driven by the pusher 53B. The both ends of the binding needle are received and folded inward to be bound.
[0037]
The clincher 53C of this embodiment is fixed to the leading end side of the support member 51 that rotates toward the recess 33 of the post-processing tray 3, and a binding portion that sandwiches the recording paper bundle by the rotating operation of the eccentric cam 52. The opening amount of 53E can be changed. The clincher 53C is simpler and simpler than the stapler main body 53A and the pusher 53B, and occupies a small volume. Therefore, the conveying operation is hardly disturbed when the recording paper is conveyed.
[0038]
That is, when binding the recording paper bundle P, the clincher 53C of this embodiment is pushed by the rotating operation of the eccentric cam 52 and moves / advances toward the pusher 53B, and is closest to the pusher 53B. The position is temporarily fixed and held.
[0039]
In this way, the cam driving motor 52B rotates the eccentric cam 52 by 180 degrees via the rotating shaft 52A, thereby bringing the clincher 53C closest to the pusher 53B or retracting it to the most separated position. be able to.
[0040]
As described above, the main portion of the saddle stitching processing means 5 (the stapler main body 53A and the stapler main body 53A and the like) which may interfere with the transport operation when transporting the recording paper bundle is disposed on the surface side of the post-processing toilet 3 of the present invention. Since the pusher 53B) is not installed, it is not necessary to provide a guide member along the post-processing tray 3. Therefore, the vicinity of the saddle stitching means on the surface side of the post-processing tray 3 is also opened.
[0041]
The center folding processing unit 6 performs the center folding process on the central portion where the center binding is performed on the recording sheet bundle which has been subjected to the center binding processing at the center by the saddle stitching processing unit 5. As shown in FIG. 3, the middle folding processing means 6 of this embodiment includes a pair of middle folding rollers 61 that are in contact with each other by the elastic force of a spring (not shown) and rotated by a drive motor (not shown), Toward the nip portion between the half-folding rollers 61 by another drive motor, that is, in the direction X perpendicular to the recording paper transport direction Y in FIG. 2 and substantially perpendicular to the surface of the post-processing tray 3 And a half-folded plate 63 that moves forward and backward.
[0042]
Next, the operation of this embodiment will be described.
(1) When the post-processing is not performed on the recording paper on which the image is transferred by the copying machine 2 and discharged from the copying machine 2, the non-post-processing mode is selected and set. Then, in FIG. 1, each recording sheet is conveyed as it is along the non-post-processing conveyance path α by the separation / separation operation of the separation claw 13, and is discharged from the recording sheet post-processing apparatus 1 to the outside by the paper discharge roller 12D. , Discharged onto the tray 1A.
[0043]
Note that the non-post-processing transport path α does not have a structure in which a guide member or the like is installed on the surface side, and constitutes an open transport path. Paper can be prevented from jamming. Further, for example, even when a paper jam occurs at the nip portion of the conveyance roller 12C provided in the non-post-processing conveyance path α, the front and rear of the conveyance roller 12C are opened in an open state, so that the recording can be easily performed. The paper can be removed.
[0044]
(2) On the other hand, when post-processing is performed on the recording paper, for example, when an end-face binding processing mode is selected and set, a solenoid (not shown) is actuated to rotate the separation claw 13 and each recording paper is post-processed. It is sequentially conveyed toward the conveyance path β. As a result, a predetermined number of recording sheets (for example, a maximum of about 50 sheets) are stacked on the post-processing tray 3, and the recording sheet alignment operation is performed prior to the end-face binding operation in the post-processing tray 3.
[0045]
The recording paper bundle P stacked and aligned on the post-processing tray 3 is subjected to binding processing at the end face position by a stapler (not shown) provided in the end face binding processing means 4 and is moved upward by the discharge claw 34 (see FIG. 8). And is discharged onto the tray 1A by a paper discharge roller 12D (see FIG. 1).
[0046]
When the recording paper is transported to the post-processing tray 3 and the recording paper bundle is discharged from the post-processing tray 3, the saddle-stitching clincher 53C is provided with a post-processing tray to prevent the recording paper from being jammed. 3 is moved back to a position farthest from the recess 33 and stands by (corresponding to the solid line portion in FIG. 3).
[0047]
Accordingly, since a binding portion 53E having a large gap is formed between the clincher 53C in the retracted state and the recess 33 of the post-processing tray 3, the recording paper that passes through this and is discharged to the outside. It is possible to effectively prevent the bundle P from causing a paper jam at the binding portion 53E. Further, even if a part of the recording paper bundle P is jammed at the binding portion 53E, the recording paper can be easily removed because the post-processing tray 3 is widely open on the front side.
[0048]
(3) When the saddle stitching processing mode is selected and set, the clincher 53C is moved back to the position farthest from the stapler main body 53A and the desired plurality of recording sheets as in the end face processing mode. The bundles are aligned and stacked on the post-processing tray 3.
[0049]
That is, even when the recording paper bundle is transported to the post-processing tray 3, as shown in FIG. 3, the saddle stitch clincher 53C is farthest from the recess 33 of the post-processing tray 3 (shown by a solid line in FIG. 3). Since a large gap as a binding portion 53E is formed between the clincher 53C and the recess 33 of the post-processing tray 3, a bundle of recording sheets made up of a large number of sheets is formed. Even when P is stacked, it is possible to effectively prevent the paper jam at the binding portion 53E.
[0050]
In this way, a series of alignment / alignment operations are performed on a plurality of recording sheets discharged from the copying machine 2, and then the operation proceeds to the saddle stitching operation.
[0051]
When the saddle stitching process is completed, the eccentric cam 52 rotates, so that the clincher 53C moves back to the original position, that is, the home position farthest from the recess 33, and waits for the next saddle stitching operation.
[0052]
As shown in FIG. 8, the recording paper bundle P that is saddle-stitched in this way is further lifted above the post-processing tray 3 by the discharge claw 34, and the center of the recording paper bundle P that has been subjected to the saddle stitching process. The raising operation stops when the portion P0 coincides with the traveling direction of the half-folded plate 63.
[0053]
Thereafter, the half-fold plate 63 moves forward toward the nip portion between the half-fold rollers 61 and pushes the center portion where the recording paper bundle P is saddle-stitched. As a result, the saddle-stitched recording paper bundle P is folded between the middle folding roller 61 from the center portion P0 and folded into two. The recording paper bundle P sandwiched between the center folding rollers 61 is discharged onto the tray 1A outside the recording paper post-processing apparatus 1.
[0054]
In this way, a booklet in which a plurality of recording sheets are bundled together can be bound.
[0055]
Therefore, according to this embodiment, when the recording paper bundle P is stacked, the binding portion 53E between the recess 33 and the clincher 53C is opened to the maximum, and only when the binding needle is driven into the recording paper bundle P. Since the gap is configured to narrow, it is possible to effectively prevent the recording paper bundle P from being jammed at the binding portion 53E.
[0056]
Furthermore, according to this embodiment, since the clincher 53C can be moved in the direction of retreating from the recess 33, even if the recording paper bundle P is curled, the binding portion between the pusher 53B and the clincher 53C is used. It is also possible to prevent the trouble that the recording paper bundle P is locked to 53E. As a result, even a curled recording paper bundle can be bound reliably.
[0057]
【The invention's effect】
As described above, according to the present invention, the main part containing the main constituent parts for driving the staples of the saddle stitching processing means is arranged on the surface of the recording paper alignment tray on which the recording papers are stacked and aligned. Since the binding needle that is driven in from the main part protrudes from the back side to the front side of the recording paper alignment tray and pierces the recording paper bundle, If this is done, the main part of the saddle stitching processing means, which may cause a paper jam due to locking of the recording paper bundle, is not installed on the front side of the recording paper alignment tray, but is installed on the back side. Thus, it is possible to effectively prevent a trouble that a bundle of recording sheets fed to the surface of the recording sheet alignment tray and subjected to saddle stitching is locked to the main part and causes a paper jam.
[0058]
Moreover, according to the present invention, since the main part of the saddle stitching processing means is removed from the surface of the recording paper alignment tray, the guide member that has been conventionally provided adjacent to the saddle stitching processing means is provided on the surface of the recording paper alignment tray. Since the front side of the recording paper alignment tray is now widely opened, even if a paper jam occurs in this area, it is easy to start from the front side of the opened recording paper alignment tray. The recording paper can be removed.
[0059]
Furthermore, according to the present invention, when performing the saddle stitching processing operation, the recording paper alignment tray has the saddle stitching processing means so that the end portion into which the main staple is driven protrudes from the surface of the recording paper alignment tray. Since the front side is bent in a convex shape in the vicinity of the saddle stitching position where the main part is provided, the end part for driving the binding needle of the main part when performing the saddle stitching processing operation Is easy to protrude from the front surface of the recording paper alignment tray, and even if the main part is installed on the back side of the recording paper alignment tray, only by devising the shape of the recording paper alignment tray, in other words, With a simple configuration, the saddle stitching processing operation can be surely realized.
[0060]
Further, according to the second aspect of the present invention, since the recess recessed toward the back side is formed near the saddle stitching position of the saddle stitching processing means of the recording paper alignment tray, the back side of the recording paper alignment tray is formed. Even when the main part is installed in the main part, when performing the saddle stitching processing operation, the part into which the binding needle of the main part is driven easily protrudes from the recess surface of the recording paper alignment tray. Even in such a case, it is possible to provide a recording paper post-processing tray that can reliably perform the saddle stitching processing operation.
[0061]
According to the third aspect of the invention, the stapler used as the saddle stitching processing means is attached to the back side of the recording paper alignment tray, and is attached to the recording paper bundle so as to be rotatable on the stapler main body. A main portion having a pusher from which the binding needle jumps out, and a receiving portion having a clincher provided so as to be able to advance and retreat toward the recording paper alignment tray on the surface side of the recording paper alignment tray facing the pusher. Since the recording paper bundle is sandwiched at the binding portion between the pusher and the saddle stitching process is performed, when the recording paper is fed into the recording paper alignment tray, the clincher is greatly separated from the surface of the recording paper alignment tray. Paper jam can be prevented, and even if a paper jam occurs in the scale, it can be easily removed, resulting in a simple configuration , High recording paper post-processing apparatus reliability can be realized.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram showing a recording paper post-processing apparatus of an image forming apparatus according to the present invention.
FIG. 2 is a perspective view showing the internal mechanism.
FIG. 3 is an explanatory diagram illustrating a post-processing operation of recording paper in a subsequent processing tray.
FIG. 4 is an explanatory view showing staples used for the saddle stitching processing means.
FIG. 5 is an explanatory diagram showing the saddle stitching operation.
FIG. 6 is an explanatory diagram of the same.
FIG. 7 is an explanatory diagram of the same.
FIG. 8 is an explanatory diagram showing the middle folding operation.
[Explanation of symbols]
1 Recording paper post-processing device 2 Copier (image forming device)
3 Post-processing tray (recording paper alignment tray)
4 End surface binding processing means 5 Saddle binding processing means M Main part S Receiving part 51 Support member 51A Support shaft 52 Eccentric cam 52A Rotating shaft 53 Stapler 53A Stapler main body 53B Pusher 53C Clincher 53D Rotating shaft 53E Binding part 6 Middle folding processing means

Claims (3)

An image forming apparatus comprising: a recording sheet alignment tray that sequentially stacks and aligns recording sheets on which images have been recorded by the image forming apparatus; and a saddle stitching processing unit that performs a saddle stitching process with a stapler at a center folding position of the recording sheet bundle. A recording paper post-processing device,
A main part containing main components for driving the binding needle of the saddle stitching processing means is attached to the back side opposite to the surface of the recording paper alignment tray on which the recording paper is stacked and aligned,
The binding needle driven in from the main part is configured to protrude from the back side to the front side of the recording paper alignment tray and pierce the recording paper bundle ,
When the saddle stitching processing operation is performed, the recording paper alignment tray is located near the saddle stitching position of the saddle stitching processing means so that the end portion for driving the staple of the main portion protrudes from the surface of the recording paper alignment tray. A recording paper post-processing apparatus of an image forming apparatus, wherein the surface side is formed in a substantially square shape bent in a convex shape . 2. A recording paper post-processing apparatus of an image forming apparatus according to claim 1, wherein a recess is formed in the vicinity of the saddle stitching processing means in the saddle stitching processing section of the recording paper alignment tray. . A stapler used as the saddle stitching processing means,
A main portion having a stapler main body attached to the back side of the recording paper alignment tray, and a pusher that is rotatably attached to the stapler main body and from which a binding needle protrudes toward the aligned recording paper bundle;
A receiving portion having a clincher provided so as to be able to advance and retreat toward the recording paper alignment tray on the surface side of the recording paper alignment tray facing the pusher;
3. The recording paper post-processing apparatus according to claim 1, wherein the recording paper bundle is sandwiched between the clincher and the pusher to perform the saddle stitching process.

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