KR101924726B1 - Sheet binding apparatus including a plurality of staplers - Google Patents

Abstract

Provided is a sheet binding apparatus including a plurality of staplers. The apparatus comprises: a first stapler being movable along a path including at least one stapling position by a driving part; and a second stapler being movable along a path including at least one stapling position by the first stapler. The first stapler and the second stapler are able to perform docking and undocking while moving in an identical path. The second stapler is waiting in a waiting position such that movement of the first stapler is not interfered during operation of the first stapler. The second stapler is towed by the first stapler and is moved to the stapling position.

Description

[0001] SHEET BINDING APPARATUS INCLUDING A PLURALITY OF STAPLERS [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper bookbinding apparatus, and more particularly, to a paper bookbinding apparatus including a plurality of staplers for bending a paper bundle processed and discharged in an image forming apparatus such as a copying machine, a printer, a facsimile machine or the like.

In many cases, an image forming apparatus such as a copier, a facsimile machine, a scanner, a printer and the like is further provided with a post-processing device called a " finisher ". Such a post-processing apparatus performs bookbinding operations such as aligning, folding, or stapling the paper processed and discharged by the image forming apparatus.

The paper bookbinding apparatus employed in the image forming apparatus or the post-processing apparatus moves the stapler to the stapling operation position automatically and staples the paper bundle processed and discharged in the image forming apparatus or the post-processing apparatus. For example, the sheet bundle moves to the desired position (set position) while moving in the lateral direction of the upper end of the stack of sheets to be stapled, and performs the stapling operation at the corresponding position.

On the other hand, the stapler generally uses an iron core to iron sheet bundles. Since the iron core is not recycled after being used but discarded, it is not only a waste of resources itself, but also has a problem that it is troublesome to remove the iron core individually in the recycling process of waste paper.

In order to solve this problem, a stapler having no iron core has been recently developed and used. Instead of using an iron core, the ironless stapler presses the stapling portion of the paper so that the paper bundle is bundled. Such an ironless stapler is applied to stapling a relatively small amount of paper because the sheets are tied by the imprinted mark.

The iron-free stapler has the advantage of not having the iron core removed at the time of recycling the waste paper because the iron core is not used at all, but there is a limit to provide a relatively loose binding force. Accordingly, as described above, the post-treatment apparatus is provided with a stapler using an iron core rather than a single iron-core stapler, as described above, and is selectively used when necessary.

There are some limitations in installing a plurality of staplers including the iron core stapler and the iron core stapler in the post-processing apparatus. When a plurality of staplers are employed in the post-processing apparatus as described above, the staplers use the same movement path. For the stapling operation, the other stapler must be in a position avoided from the movement path, since the selected stapler must move laterally to the stapling position. Furthermore, when a plurality of staplers are provided with separate driving units, the apparatus becomes complicated.

Japanese Patent Publication No. 2015-124084

The present invention provides a paper binding apparatus including a plurality of staplers and having a simple overall apparatus configuration.

The present invention provides a paper binding apparatus including a plurality of staplers including a iron-core stapler.

The present invention provides a paper binding apparatus including a plurality of staplers, comprising: a first stapler movable along a path including one or more stapling positions by a driving unit; And a second stapler movable along the path including the at least one stapling position by the first stapler.

The first stapler and the second stapler may be movable on the same movement path.

The first stapler and the second stapler can be docked and undocked so that the first stapler moves alone or the first stapler and the second stapler move together.

When the first stapler moves solely for the stapling operation, the second stapler can wait at a standby position outside the movement range for the stapling operation of the first stapler.

The first stapler and the second stapler can be docked at the standby position.

One of the first stapler and the second stapler is provided with a hook, and the remainder may be provided with a link portion capable of engaging and disengaging with the hook.

The link portion includes: a rotating shaft; A linker which is installed on the rotary shaft and rotates between an engagement posture and a release posture which are engaged with the hook, and which is inserted into the groove of the hook in the engagement posture; And a spring for resiliently rotating the linker in the engagement posture, wherein when the hook approaches the link portion, the hook is moved forward while contacting and pushing the engagement unit to rotate the linker backward to the release posture, The linker may be elastically rotated by the spring in the engagement posture by the spring after the end of the link unit is inserted into the groove of the hook by the spring.

The linker may have an unlocking contact portion for performing a reverse rotation for release when an external force is applied.

The first stapler may be disposed on a first LM bush installed to be movable on the guide rail, and the second stapler may be disposed on a second LM bush installed movably on the guide rail.

Wherein the link portion comprises: a base plate provided on the second LM bush; A link guide rod provided on the base plate in the guide rail direction; A link body movably installed in the link guide rod and moving between a docking position where the hook and the linker are engaged and an undocking position where the link is released; The rotation shaft provided on the link body; The linker provided on the rotating shaft; An undocking spring for pushing the link body elastically into the undocking position; And a link pusher for supporting the link body to stop when the second stapler is in the standby position.

When the link body is in the undocking position, the hook of the first stapler and the base plate of the second stapler can be contactable.

The hook of the first stapler pushes the base plate of the second stapler at the standby position and the link body is supported by the link pusher when the base plate and the link guide bar are pushed, The hooking unit of the linker can be inserted into the groove of the hook.

Wherein a stopper is provided at a position spaced a predetermined distance away from the waiting position at the stapling position of the second stapler, the second stapler is pulled by the first stapler, and the releasing contact portion of the linker When the stopper is brought into contact with the stopper, the linker may be rotated reversely to release the engagement.

The second stapler can be pushed by the first stapler and moved to the standby position with the hook and the base plate in contact when the link body is in the undocking position.

According to the present invention, there is provided a stapling apparatus including a plurality of staplers using the same movement path. It is possible to simplify the structure of the apparatus by using a method of towing the other stapler using the stapler connected to the driving unit. In particular, in the stapler apparatus employing a non-iron core stapler which does not use an iron core, it is possible to adopt a configuration in which a non-iron core stapler having a relatively low frequency of use is placed in a standby position.

1 is a perspective view of a paper binding apparatus including a plurality of staplers according to a preferred embodiment of the present invention.
FIGS. 2 and 3 are plan views showing a state where the stapler is removed in FIG.
4A to 4F are diagrams for explaining the docking operation of the paper binding apparatus including a plurality of staplers according to the present invention.
5A to 5G are diagrams for explaining an undocking operation of a paper binding apparatus including a plurality of staplers of the present invention.
FIG. 6 is an exploded perspective view of the main part of FIG. 1; FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

First, the present invention relates to a stapling apparatus or a sheet binding apparatus which is provided in a post-processing apparatus of an image forming apparatus such as a copying machine and a scanner and automatically staples (discharges) a discharged sheet bundle. Such a paper bookbinding apparatus can move to a position at which the stapler performs the stapling operation (hereinafter referred to as a " stapling position ") and performs a stapling operation at the corresponding position. The paper binding apparatus of the present invention is provided with a plurality of staplers using the same moving path. For example, one of the plurality of staplers provided may be a stapler using an iron core, and the other may be a non-iron core stapler without an iron core. The iron-free stapler does not have a separate driving part, but is pulled or pushed by the iron-stapler. Further, the iron-free stapler does not interfere with the movement operation on the movement path of the iron-core stapler which is mainly used by waiting at the standby position during non-use. For this purpose, the iron core stapler and the iron core stapler employ a docking configuration capable of docking / undocking. When the iron core stapler in the standby position performs the stapling operation, the iron core stapler approaches the standby position to pull the iron core stapler, and the docking operation of the iron core stapler and the iron core stapler is performed at the standby position. The iron core stapler tows the iron core stapler to the stapling position, and the iron core stapler performs the stapling operation at the corresponding stapling position. When the use of the iron core stapler is completed, the iron core stapler moves the iron core stapler to the standby position. In this case, after the undocking operation is performed before moving the iron core stapler to the standby position, the iron core stapler can push and move the iron core stapler.

In the above description, the iron core stapler and the iron core stapler are shown as an example, and it goes without saying that a plurality of staplers may be applied to other stapler combinations.

Hereinafter, a paper binding apparatus including a plurality of staplers according to a preferred embodiment of the present invention will be described in detail with reference to the drawings.

1 is a perspective view of a paper binding apparatus including a plurality of staplers according to a preferred embodiment of the present invention. 2 and 3 are plan views showing a state in which the staplers are removed in Fig. 4A to 4F are diagrams for explaining the docking operation of the paper binding apparatus including a plurality of staplers according to the present invention. 5A to 5G are diagrams for explaining an undocking operation of a paper binding apparatus including a plurality of staplers of the present invention. FIG. 6 is an exploded perspective view of the main part of FIG. 1; FIG.

For reference, FIGS. 2 to 6 show staplers removed for convenience of understanding, and reference numerals for the first stapler and the second stapler virtually indicate corresponding portions.

A paper binding apparatus including a plurality of staplers according to a preferred embodiment of the present invention includes a frame 11, a guide rail 12 provided on the frame 11, And a driving unit 15 for moving the first stapler 13 on the guide rail 12. The first stapler 13 and the second stapler 13 are mounted on the guide rails 12, The driving unit 15 includes a stepping motor 151 and a belt 152 and is provided to transversely move the first stapler 13 to a set position in accordance with a control signal of the control unit . The second stapler 14 is not provided with a separate driving unit but is pulled and moved by the first stapler 13 by being docked with the first stapler 13. [ As described above, the first stapler 13 may be an 'iron core stapler' using an iron core, and the second stapler 14 may be a 'iron core stator' But it is not limited thereto.

The frame 11 is an element that supports other components. However, the frame 11 employed in the present invention may be used to support the link pusher 164, in which the support element 111 or a separately provided element is provided on the second stapler 14, And the frame 11 may be provided with a portion of the stopper 112 for rotating the linker 166 in the reverse direction by releasing the contact with the releasing contact portion 1662 of the linker 166. [

The guide rail 12 is in the form of a rod provided on the frame 11 as shown in the figure, but is not limited thereto. The first stapler 13 and the second stapler 14 are movably installed on the guide rail 12 through the guide bushes 131 and 141 and the brackets 132 and 142, The first stapler 13 and the second stapler 14 have the same movement path.

The driving unit 15 is mounted on the frame 11 and moves the first stapler 13 according to a control signal of the control unit. The belt 152 of the driving unit 15 is connected to the first LM guide bush 131 of the first stapler 13 as shown in FIG. The belt 152 is moved by the rotation of the stepping motor 151 so that the first stapler 13 moves while the first LM guide bush 131 is moved. The movement of the first stapler 13 includes movement to its own stapling position and movement to pull the second stapler 14.

As described above, the first stapler 13 moves to the stapling position of its own, and also performs the movement for traction of the second stapler 14. Movement for traction may include movement to approach the second stapler 14 at the standby position, movement to pull the second stapler 14 to the stapling position after docking, use of the second stapler 14 to terminate And then moving the second stapler 14 to the standby position.

As described above, during the stapling operation of the first stapler 13, the second stapler 14 does not interfere with the movement of the first stapler 13 on the guide rails 12 by waiting at the standby position. For example, the standby position may be the right end or the left end region which is out of the range in which the first stapler 13 moves for its stapling operation as in the figure.

For the stapling operation of the second stapler 14, the first stapler 13 approaches the stand-by position and is docked with the second stapler 14 and pulled. When the stapling operation of the second stapler 14 is completed and the second stapler 14 is returned to the standby position, the first stapler 13 pushes the second stapler 14 to the standby position Is returned.

As described above, in the present invention, the first stapler 13 and the second stapler 14 move on the guide rail 12 for the stapling operation. However, only one driving unit 15 can move the first stapler 13 and the second stapler 14, Both the first stapler 13 and the second stapler 14 can be moved.

The first stapler 13 can dock / undock the first stapler 13 and the second stapler 14 in order to pull the second stapler 14, And is installed on the guide rail (12).

A first LM guide bush 131 and a second LM guide bush 141 are provided on the guide rail 12 so as to allow the first stapler 13 and the second stapler 14 to be movable .

The first LM guide bush 131 is provided with a first bracket 132 and the first bracket 132 is provided with a first stapler 13. The first stapler 13 is rotatably coupled to the first bracket 132 so as to be stapled in a direction parallel or diagonally with respect to the upper side of the sheet bundle, but a description thereof will be omitted here.

The second LM guide bush 141 is provided with a second bracket 142 and the second bracket 142 is provided with a second stapler 14. The second stapler 14 installed in the second bracket 142 may be a non-iron stapler.

A hook 133 is provided at one end of the first LM guide bush 131 or the first bracket 132 of the first stapler 13. The hook 133 on the side of the first stapler 13 can be engaged and disengaged with the engaging unit 1661 on the side of the second stapler 14 so that the first stapler 13 and the second stapler 14 To be docked and undocked.

The hook 133 of the first stapler 13 has a groove 1332 into which a latching unit 1661 provided at the side of the second stapler 14 can be inserted and has an inclined surface 1331 at its outer end . The inclined surface 1331 is provided so that the engaging unit 1661 can be smoothly inserted into the groove 1332 of the hook 133 as will be described later.

The second bracket 142 to which the second stapler 14 is coupled is provided with a link portion 16. The link portion 16 includes a linker 166 that is rotatably installed on the rotation shaft 165 and is elastically supported to maintain the engagement posture by a torsion spring 168 provided on the rotation shaft 165. And the engagement unit 1661 of the linker 166 is inserted into the groove 1332 of the hook 133 in the engagement posture. Therefore, it can be said that the torsion spring 168 elastically rotates the linker 166 in the coupling posture direction. Here, the torsion spring 168 is an example, and if the linker 166 is an element that maintains the coupling posture or returns the coupling posture to the engaged posture when the forced force is released in the unlocked posture, Applicable. The linker 166 can be disengaged in a state in which the linker 166 is engaged with or coupled to the hook 133 along the direction of rotation.

When the engaging unit 1661 provided at one end rotates in the direction of being inserted into the groove 1332 of the hook 133 and the engaging unit 1661 is inserted into the groove 1332, As described above, the elastic rotation of the linker 166 for engagement is made by the torsion spring 168, and the engagement of the coupled state after the engagement is also achieved by the torsion spring 168. The fact that the linker 166 is in the engaged state with the hook 133 can be referred to as a binding posture as described above.

When the linker 166 rotates in a direction away from the groove 1332 of the hook 133 of the engaging unit 1661 in the engaged state, the engagement is released. The posture in which the linker 166 is not engaged with the hook 133 can be referred to as the release posture.

As described above, in the sheet binding apparatus including the plurality of staplers of the present invention, the plurality of staplers can use the same moving path and the plurality of staplers can be driven by one driving unit 15. The docking / undocking configuration is docked or undocked depending on whether the hook 133 and the linker 166 are engaged or disengaged.

The inclined surface 1331 of the end portion of the hook 133 allows the engaging unit 1661 of the linker 166 to be smoothly inserted into the groove 1332 of the hook 133. [ The engaging unit 1661 may have the same shape as the roller.

The linker 166 also has a release contact portion 1662 for allowing the engagement unit 1661 inserted in the groove 1332 of the hook 133 to be easily disengaged to release the engagement. When the second stapler 14 is pulled and moved in the leftward direction (from the stapling position to the left) in the drawing, the releasing contact portion 1662 is brought into contact with the stopper 112 formed in the frame 11 And the linker 166 is rotated in the reverse direction by this contact, thereby becoming the release position.

In a preferred embodiment of the paper bookbinding apparatus including a plurality of staplers of the present invention, the docking and undocking operations are performed mechanically and automatically. For example, the docking operation is performed at the standby position, and the undocking operation is performed at the position past the stapling position of the second stapler 14. [ After undocking, the first stapler 13 pushes and moves the second stapler 14 to the standby position.

To this end, the link portion 16 includes a base plate 161, a link guide rod 162, an undocking spring 167, a link body 163, a link pusher 164, a rotary shaft 165, a torsion spring 168 ), And a linker 166.

The base plate 161 is provided with the elements of the link portion 16 and the base plate 161 is coupled to the second bracket 142.

The link guide rods 162 are installed on the base plate 161 in the same direction as the guide rails 12. A link body 163 is movably installed on the link guide rod 162. [ When the link body 163 is located on the link guide rod 162 in the vicinity of the hook 133 of the first stapler 13 in the docked position. The link guide rod 162 is provided with an undocking spring 167 to push the link body 163 away from the docking position (undocking position). In the undocking state by the undocking spring 167, the link body 163 of the second stapler 14 and the linker 166 installed therein are in the undocking position. Further, the link body 163 and the linker 166 are also in the undocking position in the standby position.

The above-described rotation shaft 165, torsion spring 168, and linker 166 are provided on the link body 163.

The base plate 161 is provided with a link pusher 164 so that the link body 163 is pushed to the docking position when the second stapler 14 is engaged with the linker 166 and the hook 133 at the stand- do. The link pusher 164 may be supported by, for example, a support element 111. The operation of the link pusher 164 to push the link body 163 is substantially such that when the base plate 161 of the second stapler 14 is pushed by the hook 133 of the first stapler 13, The pusher 164 supports the link body 163 so that the link body 163 is in the docked position.

The hook 133 of the first stapler 13 can be brought into contact with the base plate 161 when the link body 163 is in the undocking position deviated from the docking position.

When the hook 133 of the first stapler 13 pushes the base plate 161 when the second stapler 14 is in the standby position and the link body 163 is in the undocking position, 164 are supported by the supporting element 111 to support the link body 163 so that the link body 163 is brought into the docking position.

When the second stapler 14 is located at a position other than the standby position in the undocking state, the first LM guide bush 131 of the first stapler 13 is engaged with the second LM The link body 163 is still in the undocking position even if the guide bush 141 is pushed, in which case the second stapler 14 can be moved to the standby position.

Hereinafter, an operation of a paper binding apparatus including a plurality of staplers according to a preferred embodiment of the present invention will be described. In the following description, docking and undocking operations of a plurality of staplers are mainly described.

<Docking operation>

Figs. 4A and 4 are diagrams for signing the docking operation of the first stapler 13 and the second stapler 14. Fig.

The first stapler 13 and the second stapler 14 are docked when the second stapler 14 is in the standby position. The standby position of the second stapler 14 is disposed outside the lateral movement range for the stapling operation of the first stapler 13, for example. Thus, when the second stapler 14 is in the standby position, the first stapler 13 moves to its own stapling position determined on the guide rails and performs the stapling operation.

As shown in FIG. 4A, when a control signal for use of the second stapler 14 is generated, the first stapler 13 approaches the second stapler 14 waiting at the standby position. The link body 163 of the second stapler 14 waiting in the standby position is in the undocking position by the undocking spring 167. [

The hook 133 of the first stapler 13 contacts the base plate 161 of the second stapler 14 as shown in Fig.

4C and 4D, as the hook 133 continues to push the base plate 161, the elements of the second stapler 14, i.e., the second LM guide bush 141, the second bracket 142 The base plate 161, and the link guide rod 162 are pushed together. At this time, the link body 163 and the linker 166 installed therein are held in place by the link pusher 164 supported by the support element 111, thereby becoming the docking position. In this process, the hook 133 comes into contact with the engaging unit 1661 of the linker 166, and the linker 166 is slightly rotated in the reverse rotation direction as the release posture so that the inclined surface 1331 of the hook 133 contacts the linker 166 The linker 166 rotates naturally. When the end of the hook 133 completely passes through the engaging unit 1661, the linker 166 is elastically rotated toward the engaging posture by the torsion spring 168 so that the engaging unit 1661 is engaged with the groove 133 of the hook 133 1332 to complete the docking of the first stapler 13 and the second stapler 14 (Fig. 4D).

4E and 4F, the first stapler 13 moves the second stapler 14 to the stapling position of the second stapler 14 so that the stapling position (Fig. 4F) 2 stapler 14 can perform the stapling operation.

<Undocking and Moving to Standby Position>

5A to 5H are views for explaining an undocking operation of the docked first stapler 13 and the second stapler 14. Fig.

When the use of the second stapler 14 is completed and no further use is required, the second stapler 14 is moved to the standby position after undocking.

To this end, as shown in FIG. 5A, the first stapler 13 pulls the second stapler 14 to the opposite side of the stand-by position at the stapling position and moves it.

The release contact portion 1662 of the linker 166 contacts the stopper 112 provided on the frame 11 during movement. Then, as shown in FIG. 5C, the linker 166 reversely rotates toward the release posture, and the engagement unit 1661 is disengaged from the groove 1332 of the hook 133 to release the engagement. At this time, as shown in FIG. 5D, the undocking spring 167 pushes the link body 163 to the undocking position.

5D, 5E, and 5F, the link body 163 is pushed by the undocking spring 167 to the undocking position while the link pusher 164 is pushed by the support element 111 And is not supported by the link pusher 164. In this state, as shown in Figs. 5E and 5F, the first stapler 13 pushes the second stapler 14 to the standby position. That is, even if the hook 133 of the first stapler 13 contacts the base plate 161 and pushes the base plate 161, the link body 163 is moved to the undocking position by the undocking spring 167 The second stapler 14 and its subsidiary elements together with the base plate 161 are all pushed and moved to the standby position.

Thereafter, as shown in Fig. 5G, the first stapler 13 moves to its own stapling position.

As described above, the paper binding apparatus including a plurality of staplers of the present invention can move staplers without substantially interfering with each other while using the same movement path. Further, the present invention can be implemented with a configuration including only a single driving unit including a plurality of staplers, thereby simplifying the entire apparatus. Particularly, in the case of including the iron core stapler and the iron core stapler having a relatively low frequency of use, the effect described above can be obtained when the iron core stapler is placed in the standby position and if necessary, Can be maximized.

In addition, the above-described preferred embodiments are only examples, and the following modifications are applicable.

It is also possible that the hook and the link portion are provided on the opposite sides, for example, the hook is connected to the second stapler and the link portion is provided on the first stapler. In addition, the first stapler and the second stapler may be installed in a plurality of guide rails other than the same guide rail.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments.

11: frame 12: guide rail
13: first stapler 14: second stapler
15: driving part 16: link part
111: Support element 112: Stopper
131: first LM guide bush 132: first bracket
133: hook 141: second LM guide bush
142: second bracket 151: stepping motor
152: Belt 161: Base plate
162: link guide rod 163: link body
164: Link pusher 165:
166: linker 167: undocking spring
168: Torsion spring 1332: Home
1661: Jam unit 1662: Release contact area

Claims (14)

A paper binding apparatus comprising a plurality of staplers, comprising:
A first stapler movable along a path including one or more stapling positions by a driving unit; And
And a second stapler movable along a path including one or more stapling positions by the first stapler,
Wherein the first stapler and the second stapler are capable of being docked and undocked such that the first stapler moves alone on the same path or the first and second staplers move together A paper binding apparatus comprising a stapler.
delete delete The method according to claim 1,
Wherein when the first stapler moves solely for stapling operation, the second stapler waits at a standby position outside the movement range for the stapling operation of the first stapler. Wherein the paper binding apparatus comprises:
The method of claim 4,
Wherein the first stapler and the second stapler are docked at the standby position.
The method according to any one of claims 1, 4, and 5,
Wherein one of the first stapler and the second stapler is provided with a hook,
And the remaining portion is provided with a link portion capable of engaging and disengaging with the hook.
7. The apparatus of claim 6,
A rotating shaft;
A linker which is installed on the rotary shaft and rotates between an engagement posture and a release posture which are engaged with the hook and which is inserted into the groove of the hook in the engagement posture; And
And a spring for elastically rotating the linker in the engagement posture,
When the hook approaches the link portion, the linker is advanced while contacting and pushing the engagement unit to rotate the linker backward to the release posture, and after the end portion of the hook passes the engagement unit, And the engaging unit is engaged with the groove of the hook so as to be in the engaged state.
The method of claim 7,
Wherein the linker has a releasing contact portion where a reverse rotation is performed for release when an external force is applied.
The method of claim 8,
Wherein the first stapler is disposed in a first LM bush installed movably in a guide rail,
Wherein the second stapler is disposed in a second LM bush installed movably in the guide rail.
[12] The method of claim 9,
A base plate installed on the second LM bush;
A link guide rod provided on the base plate in the guide rail direction;
A link body movably installed in the link guide rod and moving between a docking position where the hook and the linker are engaged and an undocking position where the link is released;
The rotation shaft provided on the link body;
The linker provided on the rotating shaft;
An undocking spring for pushing the link body elastically into the undocking position; And
And a link pusher for supporting the link body to stop when the second stapler is in the standby position.
The method of claim 10,
Wherein the hook of the first stapler and the base plate of the second stapler are in contact with each other when the link body is in the undocking position.
The method of claim 11,
The hook of the first stapler pushes the base plate of the second stapler at the standby position and the link body is supported by the link pusher when the base plate and the link guide bar are pushed, Wherein the hooking unit of the linker is inserted into the groove of the hook.
The method of claim 12,
A stopper is provided at a position spaced apart from the stapling position of the second stapler by a predetermined distance,
Wherein when the second stapler is pulled by the first stapler and the releasing contact portion of the linker contacts the stopper, the linker is rotated reversely to release the engagement. Bookbinding device.
14. The method of claim 13,
Wherein the second stapler is pushed by the first stapler and moved to the standby position while the hook and the base plate are in contact with each other when the link body is in the undocking position, Wherein the paper binding apparatus comprises:

Images