Post-processing device and image forming device

Abstract

To provide a post-processing device which enables oblique binding by rotating a binding device obliquely, even when a guide rail for moving the binding device is linear, and to provide an image forming device.SOLUTION: A post-processing device includes: a needle binding device 500 for performing binding processing with respect to a paper bundle; a non-needle binding device 600; and a guide rail 450 for moving the needle binding device 500 and the non-needle binding device 600. A rotation mechanism 700 is arranged at a position adjacent to the guide rail 450, rotates rotary tables 504, 604 with respect to pedestals 502, 602, respectively, according to the movement of the needle binding device 500 or the non-needle binding device 600 which has moved on the guide rail 450, and rotates the needle binding device 500 or the non-needle binding device 600.SELECTED DRAWING: Figure 9

Description

[Technical field]

[0001] The present invention relates to a post-processing device and an image forming apparatus. [Background technology]

[0002] Patent Document 1 discloses a post-processing device including a first binding means 90 that binds papers and moves while rotating a first gear 97, a second binding means 70 that binds papers and moves while rotating a second gear 77, a common path 521 which is a path along which the first binding means and the second binding means move, a first rack gear 54 which is provided along the common path and meshes with the first gear, and a second rack gear 53 which is provided along the common path, is provided on the opposite side of the common path from the first rack gear, and meshes with the second gear. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2019-167194 A Summary of the Invention [Problem to be solved by the invention]

[0004] An object of the present invention is to provide a post-processing device and an image forming device that enable oblique binding by rotating the binding device obliquely even if the guide rail for moving the binding device is linear. [Means for solving the problem]

[0005] A post-processing device of a first aspect of the present invention includes a binding device that performs a binding process on a stack of paper, a guide rail for moving the binding device, and a rotation mechanism that is positioned adjacent to the guide rail and rotates the binding device as it moves on the guide rail.

[0006] A second aspect of the post-processing device of the present invention is the post-processing device of the first aspect, wherein the binding device is rotatably attached via a rotating table to a base that moves on the guide rail, and the rotation mechanism receives a guide member provided on the binding device into a guide mechanism as the binding device moves, and moves the received guide member along the guide mechanism, thereby rotating the binding device obliquely.

[0007] A third aspect of the post-processing device of the present invention is the post-processing device of the second aspect, wherein the guide member is a guide pin fixed to the rotating table, and the guide mechanism is a guide groove that guides the guide pin.

[0008] A fourth aspect of the post-processing device of the present invention is a post-processing device of any one of the first to third aspects, further comprising a retraction mechanism that retracts the rotation mechanism to a position that does not rotate the binding device even if the binding device has moved to a preset position.

[0009] A fifth aspect of the post-processing device of the present invention is the post-processing device of the fourth aspect, wherein the retraction mechanism includes a biasing member that biases the rotation mechanism to a position that rotates the binding device that has moved to a preset position, and a cam mechanism that moves the rotation mechanism to a position that does not rotate the binding device that has moved to a preset position.

[0010] A post-processing device of a sixth aspect of the present invention includes a first binding device that performs a binding process on a stack of paper sheets, a second binding device that performs a binding process different from that of the first binding device, a guide rail for keeping either the first binding device or the second binding device waiting in a waiting area and moving the other, and a rotation mechanism that is disposed in a position adjacent to the guide rail and rotates the first binding device or the second binding device moving on the guide rail as it moves.

[0011] A seventh aspect of the post-processing device of the present invention is the post-processing device of the sixth aspect, wherein the first binding device binds the papers using a binding member, and the second binding device binds the papers without using the binding member.

[0012] The image forming apparatus of the first aspect of the present invention comprises an image forming unit that forms an image on paper, and a post-processing device that binds the stack of paper on which the image has been formed by the image forming unit. The post-processing device comprises a binding device that performs a binding process on the stack of paper, a guide rail for moving the binding device, and a rotation mechanism that is positioned adjacent to the guide rail and rotates the binding device as it moves on the guide rail. Effect of the Invention

[0013] According to the post-processing device of the first aspect of the present invention, even if the guide rail for moving the binding device is linear, the binding device can be rotated obliquely to perform oblique binding.

[0014] According to the post-processing device of the second aspect of the present invention, the binding device can be rotated obliquely as the binding device moves, thereby performing oblique binding.

[0015] According to the post-processing device of the third aspect of the present invention, an existing binding device can be used to perform oblique binding by rotating the binding device obliquely.

[0016] According to the post-processing device of the fourth aspect of the present invention, the binding device can be passed over the guide rails without being rotated obliquely.

[0017] According to the post-processing device of the fifth aspect of the present invention, the binding device can be passed over the guide rails without being rotated obliquely due to a simple configuration.

[0018] According to the post-processing device of the sixth aspect of the present invention, even if the guide rail for moving the binding device is linear, the binding device that performs the binding process selected by the operator can be rotated obliquely to perform oblique binding.

[0019] According to the post-processing device of the seventh aspect of the present invention, the operator can select whether to bind the sheets of paper without using a binding member or to bind the sheets of paper with a binding member.

[0020] According to the image forming apparatus of the first aspect of the present invention, even if the guide rail for moving the binding device is linear, the binding device can be rotated obliquely to perform oblique binding. [Brief description of the drawings]

[0021] [Figure 1] 1 is a cross-sectional view of an image forming apparatus used in an embodiment of the present invention. [Diagram 2] 2 is a diagram showing a part of a configuration of a binding processing unit in a post-processing device included in the image forming apparatus shown in FIG. 1. [Diagram 3] 3A and 3B are schematic diagrams illustrating a configuration of guide rails of the binding processing unit illustrated in FIG. 2. [Figure 4] 3 is a diagram showing a binding position of a binding device in the binding processing unit shown in FIG. 2; [Diagram 5] 11 is a schematic diagram for explaining the operation of the binding device when binding a stack of paper sheets at a position P1. FIG. [Figure 6] 13A and 13B are schematic diagrams for explaining the operation of the binding device when binding a stack of paper sheets at positions P2 and P3. [Figure 7] 13 is a schematic diagram for explaining the operation of the binding device when binding a stack of paper sheets at a position P4. FIG. [Figure 8] 5A and 5B are diagrams illustrating a configuration of a rotation mechanism in the binding processing unit according to the embodiment. [Figure 9] 13 is a schematic diagram for explaining the operation of the binding device when binding a stack of paper sheets at a position P4. FIG. [Figure 10] 5A to 5C are schematic diagrams illustrating the operation of the staple binding device. [Figure 11] 5A to 5C are schematic diagrams illustrating the operation of the staple-free binding device. [Figure 12]10A and 10B are schematic diagrams illustrating an operation when a rotation mechanism in the binding processing unit is moved to a retracted position in the embodiment. [Figure 13] 10A and 10B are schematic diagrams for explaining a modified example of the binding processing unit in the embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] Next, an embodiment of the present invention will be described with reference to the drawings. Fig. 1 is a cross-sectional view showing an image forming apparatus 10 used in the embodiment of the present invention from the front side. As shown in Fig. 1, the image forming apparatus 10 has an image forming unit 100, a post-processing unit 300 which is a post-processing device, and a transport unit 900.

[0023] The image forming unit 100 has an image forming unit main body 112, and an image forming section 120 and, for example, two supply devices 140 are arranged in the image forming unit main body 112. Also, a transport path 160 is formed in the image forming unit main body 112.

[0024] Image forming unit 120 forms an image on paper P, which is an example of a recording medium and an example of paper. Image forming unit 120 employs an electrophotographic system, and develops a latent image formed on the surface of photoconductor drum 122 with toner to form a toner image, transfers this toner image to paper P, and fixes the toner image transferred to paper P to paper P, thereby forming an image on paper P. Instead of employing an electrophotographic system in image forming unit 120, another system, such as an inkjet system, may be employed.

[0025] The supply device 140 supplies the paper sheets P stored in a stack to the image forming section 120 one by one.

[0026] The conveying path 160 conveys the paper P supplied from the supply device 140 to the image forming section 120, and conveys the paper P on which an image has been formed in the image forming section 120 so as to be discharged from the image forming unit main body 112.

[0027] The post-processing unit 300 has a post-processing unit body 312, and a binding processing unit 400 is disposed in the post-processing unit body 312. The binding processing unit 400 is a device that binds sheets P, and binds a plurality of sheets P into a bundle. The binding processing unit 400 will be described in detail later.

[0028] The post-processing unit body 312 is provided with a discharge section 314 to which the sheets P stapled by the staple processing unit 400 are discharged.

[0029] Further, a conveying path 320 is formed inside the post-processing unit body 312. The conveying path 320 conveys the paper P conveyed into the post-processing unit body 312 to the binding processing unit 400.

[0030] The transport unit 900 has a transport unit body 912, and a transport path 920 is formed inside the transport unit body 912. The transport path 920 transports the paper P discharged from the image forming unit body 112 into the post-processing unit body 312. A hole punching device (not shown) that punches holes in the paper P may be disposed inside the transport unit 900.

[0031] 1, the binding processing unit 400 has a pair of receiving rolls 410. The pair of receiving rolls 410 is an example of a receiving means, and receives the paper P transported from the transport unit 900. The pair of receiving rolls 410 is also disposed along the transport path 320.

[0032] The binding processing unit 400 further includes a stacking section 420. The stacking section 420 is an example of a stacking means, and multiple sheets P supplied from the receiving roll 410 are stacked on the stacking section 420. The stacking section 420 also includes a stacking plate 422 and a stop member 424.

[0033] The stacking plate 422 is inclined so that the end on the abutting member 424 side is located lower in the direction of gravity than the end on the opposite side to the abutting member 424, and multiple sheets of paper P are stacked on the upper surface in the direction of gravity. The rear ends of the multiple sheets of paper P in the transport direction are abutted against the abutting member 424. The rear ends are abutted against the abutting member 424, so that the multiple sheets of paper P are aligned in the transport direction.

[0034] The binding processing unit 400 further includes an aligning device 426. The aligning device 426 aligns the plurality of sheets P in a direction intersecting with the conveying direction by sandwiching the plurality of sheets P between a pair of aligning plates.

[0035] The binding processing unit 400 further includes a pushing device 430. The pushing device 430 includes, for example, three blade portions 432, and pushes the paper sheets P so that the rear end portions of the paper sheets P abut against the abutting member 424 by rotating the blade portions 432.

[0036] The binding processing unit 400 further includes a discharge device 436. The discharge device 436 includes a pair of rolls, and discharges the plurality of sheets P after the stapled sheets P to the outside of the post-processing unit main body 312 by rotation of the pair of rolls.

[0037] FIG. 2 is a schematic diagram showing a part of the configuration of the binding processing unit 400, with the right side in FIG. 2 showing the front side of the image forming apparatus 10 and the left side in FIG.

[0038] The binding processing unit 400 further includes a staple-containing binding device 500 as a first binding device, a staple-less binding device 600 as a second binding device that performs a binding process different from that of the first binding device, and a support plate 440 that supports the staple-containing binding device 500 and the staple-less binding device 600.

[0039] Here, the staple-containing binding device 500 performs a binding process on a paper stack using a staple, which is an example of a binding member, whereas the staple-less binding device 600 performs a binding process by applying pressure to the paper stack without using a staple.

[0040] A guide rail 450 for moving the staple-containing binding device 500 and the staple-less binding device 600 in a predetermined direction is formed on the support plate 440. The guide rail 450 also has a first guide rail 452 and a second guide rail 454 branching off from the first guide rail 452 to the right (upper side in FIG. 2).

[0041] Fig. 3 is a schematic diagram for explaining the configuration of the back side of support plate 440. As shown in Fig. 3, support plate 440 is provided with rail member 465 having tooth row 464 formed thereon along first guide rail 452, below first guide rail 452 in Fig. 3.

[0042] In addition, a rail member 463 having a tooth row 462 formed thereon is provided on the support plate 440 along the first guide rail 452 and the second guide rail 454 branching off from the first guide rail 452, above the first guide rail 452 and the second guide rail 454 in Figure 3.

[0043] The stapled binding device 500 has a movement drive mechanism, and transmits drive from a movement drive source to the gear member 554 to rotate the gear member 554. The gear member 554 has a tooth row that meshes with a tooth row 462 (see FIG. 3) of a rail member 463 arranged along the first guide rail 452 and the second guide rail 454. When the gear member 554 rotates in the direction of the arrow a1, the stapled binding device 500 moves in the direction of the arrow b1. When the gear member 554 rotates in the direction of the arrow a2, the stapled binding device 500 moves in the direction of the arrow b2.

[0044] The staple-free binding device 600 has a movement drive mechanism that transmits drive from a movement drive source to a gear member 654 to rotate the gear member 654. The gear member 654 has a tooth row that meshes with a tooth row 464 (see FIG. 3) of a rail member 465 that is disposed along the first guide rail 452. When the gear member 654 rotates in the direction of arrow c1, the staple-free binding device 600 moves in the direction of arrow d1. When the gear member 654 rotates in the direction of arrow c2, the staple-free binding device 600 moves in the direction of arrow d2.

[0045] The stapled binding device 500 and the stapleless binding device 600 are rotatably attached via rotating tables 504, 604, which will be described later, to bases 502, 602, which move on guide rails 450. In addition, as will be described in detail later, guide pins 506, 606, which are an example of a guide member, are fixed to the undersides of the rotating tables 504, 604, respectively.

[0046] The guide rail 450 guides the movement of the staple-containing binding device 500 among positions P1, P2, P3, P4, and P5 shown in Fig. 4. The guide rail 450 also guides the movement of the staple-less binding device 600 among positions P1, P2, P3, P4, and P6 shown in Fig. 4.

[0047] The position P5 is an example of a standby location where the staple-containing binding device 500 waits until completion of the binding process by the staple-less binding device 600. For this reason, in the following description, the position P5 will be referred to as the standby location P5.

[0048] Moreover, the position P6 is an example of a standby location where the staple-less binding device 600 waits until completion of the binding process by the staple-containing binding device 500. For this reason, in the following description, the position P6 will be referred to as the standby location P6.

[0049] That is, either the staple-containing binding device 500 or the staple-less binding device 600 waits at the waiting location P5 or the waiting location P6, and the other is moved to any one of the binding positions P1, P2, P3 or P4 to perform the binding process.

[0050] FIG. 5 is a diagram for explaining the positions of the staple-containing binding device 500 and the staple-less binding device 600 when the staple-containing binding device 500 is used to obliquely bind a stack of sheets P on the front side of the image forming apparatus 10. As shown in FIG.

[0051] As shown in FIG. 5, the staple-less binding device 600 waits at a waiting location P6, and the staple-containing binding device 500 moves along the guide rail 450 and stops at a position P1 where the guide rail 450 curves, and performs a binding process on the stack of paper P.

[0052] Similarly, when the staple-less binding device 600 is used to diagonally bind a stack of paper P on the front side of the image forming device 10, the staple-less binding device 500 waits at a waiting location P5, and the staple-less binding device 600 moves along the guide rail 450 and stops at a position P1 where the guide rail 450 curves, and performs the binding process on the stack of paper P.

[0053] FIG. 6 is a diagram for explaining the positions of the staple-containing binding device 500 and the staple-less binding device 600 when a stack of paper sheets P is flat-stitched using the staple-containing binding device 500. As shown in FIG.

[0054] As shown in FIG. 6, the stapleless binding device 600 waits at a waiting location P6, and the stapled binding device 500 moves along the guide rail 450 until the guide rail 450 stops at linear positions P2 and P3, respectively, and performs a binding process on the stack of paper P.

[0055] Similarly, when flat-stitching a stack of paper P using the staple-free binding device 600, the staple-free binding device 500 waits at the waiting location P5, and the staple-free binding device 600 moves along the guide rail 450 until the guide rail 450 stops at linear positions P2 and P3, respectively, and performs the binding process on the stack of paper P.

[0056] FIG. 7 is a diagram for explaining the positions of the staple-containing binding device 500 and the staple-less binding device 600 when the staple-containing binding device 500 is used to obliquely bind a stack of sheets P on the rear side of the image forming apparatus 10. As shown in FIG.

[0057] 7, the staple-free binding device 600 waits in a waiting area P6, and the staple-containing binding device 500 moves from the front side to the rear side along the guide rail 450. At this time, as the staple-containing binding device 500 moves, the guide pin 506 fixed to the underside of the turntable 504 of the staple-containing binding device 500 is rotated while being guided by a rotation mechanism 700, which will be described in detail later, and stops at the binding position P4, and the staple-containing binding device 600 performs the diagonal binding process on the stack of sheets P.

[0058] Similarly, when the staple-free binding device 600 is used to perform diagonal binding on the stack of sheets P on the rear side of the image forming apparatus 10, the staple-free binding device 500 waits at the waiting area P5, and the staple-free binding device 600 moves from the front side to the rear side along the guide rails 450. At this time, as the staple-free binding device 600 moves, a guide pin 606 fixed to the underside of a rotating table 604 of the staple-free binding device 600 is guided and rotated by a rotation mechanism 700, which will be described in detail later, and stops at a binding position P4, and the staple-free binding device 600 performs a diagonal binding process on the stack of sheets P.

[0059] In the image forming apparatus 10 configured as above, a plurality of bundles of paper sheets P can be bound using the staple-containing binding device 500, and a plurality of bundles of paper sheets P can be bound using the staple-less binding device 600.

[0060] The image forming apparatus 10 further includes an opening / closing unit. The opening / closing unit is attached to the surface on the front side (the right side in FIGS. 4 and 5) of the post-processing unit main body 312. When the stapled binding device 500 is disposed at position P1, opening the opening / closing unit makes it possible to visually observe the stapled binding device 500 from outside the post-processing unit main body 312, allowing staples to be replenished to the stapled binding device 500 and the remaining amount of staples in the stapled binding device 500 to be checked.

[0061] FIG. 8 is a diagram showing the rotation mechanism 700 in detail. The rotation mechanism 700 has a rotation mechanism body 702, a biasing member 704 that biases the rotation mechanism body 702 and the support plate 440, a shaft portion 706, a guide groove 708 that guides the guide pin 506 or the guide pin 606, and a limiting portion 707 that limits the movement of the rotation mechanism body 702. The rotation mechanism body 702 and the guide groove 708 are integrally formed.

[0062] The guide groove 708 is an R-shaped groove that is open on one side and closed on the other side, and specifically, is provided so that the front side of the image forming apparatus 10 is open and the rear side is closed. The guide groove 708 is used as a guide mechanism that guides the guide pins 506 and 606 to the binding position at position P4.

[0063] Furthermore, as shown in Figures 9(A) and 9(B), the rotation mechanism 700 is positioned adjacent to the guide rail 450, and is arranged at a position where the guide pin 506 fixed to the rotating table 504 of the staple-containing binding device 500 and the guide pin 606 fixed to the rotating table 604 of the staple-free binding device 600 are guided by the guide groove 708 as the staple-containing binding device 500 or the staple-free binding device 600 moves.

[0064] As the stapled binding device 500 or the stapleless binding device 600 moves on the guide rail 450, the guide pins 506, 606 fixed to the underside of the rotating tables 504, 604 are guided into the guide grooves 708 of the rotating mechanism 700, and the stapled binding device 500 or the stapleless binding device 600 is rotated relative to its respective bases 502, 602 via the rotating tables 504, 604, and the stapled binding device 500 or the stapleless binding device 600 is rotated.

[0065] In addition, the biasing member 704 biases the rotation mechanism body 702 so that the staple-containing binding device 500 or the staple-less binding device 600, which has moved to a preset position, is rotated to position P4, which is a position for performing diagonal binding on the rear side.

[0066] The rotation mechanism 700 further includes a drive source 710 and a cam 712 that is rotated by the drive source 710. The drive source 710 and the cam 712 are configured to move the rotation mechanism body 702 to a position that does not rotate the staple-containing binding device 500 or the staple-less binding device 600 that has moved to a preset position.

[0067] When cam 712 is rotated by driving source 710, the side surface of cam 712 comes into contact with the side wall of guide groove 708 in accordance with the shape of cam 712, and rotation mechanism body 702 is rotated around shaft portion 706 as the center of rotation, and guide groove 708 is retracted to a retracted position where it does not guide guide pins 506, 606. A cam mechanism that rotates rotation mechanism body 702 and guide groove 708 is configured by driving source 710 and cam 712.

[0068] FIG. 10 is a schematic diagram for explaining the operation when the staple binding device 500 passes a position close to the rotation mechanism 700. As shown in FIG.

[0069] As shown in FIG. 10(A), the staple binding device 500 moves along the guide rail 450 from the front side to the rear side.

[0070] 10(B), as the stapled binding device 500 moves, the guide pin 506 fixed to the rotating table 504 is received in the guide groove 708, and the received guide pin 506 moves along the R-shape of the guide groove 708. This allows the stapled binding device 500 to rotate obliquely, making it possible to obliquely staple the stack of paper sheets P on the rear side using staples.

[0071] 11(A), the staple-free binding device 600 moves from the front side to the rear side along the guide rail 450, and as shown in Fig. 11(B), as the staple-free binding device 600 moves, the guide pin 606 fixed to the rotating table 604 is received in the guide groove 708, and the received guide pin 606 moves along the R-shape of the guide groove 708. This causes the staple-free binding device 600 to rotate obliquely, making it possible to obliquely bind a stack of papers P on the rear side without using staples.

[0072] FIG. 12 is a schematic diagram illustrating the operation of the rotation mechanism 700 when moving the guide pins 506 and 606 to a retracted position where the guide grooves 708 do not guide the guide pins 506 and 606. As shown in FIG.

[0073] When the binding process is performed using the binding device at the standby location P5 or P6, the binding device that is not at the standby location P5 or P6 is moved to the standby location P5 or P6. In such a case, as shown in FIG. 12(A) and FIG. 12(B), the drive source 710 is driven in the counterclockwise direction, and the cam 712 is rotated in the counterclockwise direction by the drive source 710. As a result, even if the stapled binding device 500 or the stapleless binding device 600 passes a position close to the rotation mechanism 700 and the guide pin 506 or the guide pin 606 moves to a position where the guide pin 506 or the guide pin 606 is guided by the guide groove 708, the guide groove 708 is retreated by the rotation of the cam 712 to a position where the guide pin 506 or the guide pin 606 is not guided and the stapled binding device 500 or the stapleless binding device 600 is not rotated. In other words, the rotation mechanism 700 functions as a retreat mechanism that moves the guide groove 708 to a retreat position. Then, when the cam 712 is rotated clockwise by the driving source 710, the biasing force of the biasing member 704 moves the rotation mechanism 700 to a position where it rotates the staple-containing binding device 500 or the staple-less binding device 600, which has moved to a preset position, to position P4.

[0074] In other words, the rotation of the cam 712 brings the side surface of the cam 712 into contact with the side wall of the guide groove 708 in accordance with the shape of the cam 712, the rotation mechanism body 702 rotates around the shaft portion 706 as the center of rotation, the opening 708a of the guide groove 708 moves to the upper side in Fig. 12(B) and the guide groove 708 moves to a retracted position where it does not guide the guide pins 506, 606. As a result, as the stapled binding device 500 and the staple-less binding device 600 move, the guide pins 506, 606 are not guided by the guide groove 708, and the stapled binding device 500 or the staple-less binding device 600 moves along the guide rail 450 to the standby location P5 or P6.

[0075] Next, a modified example of the binding unit 400 described above will be described with reference to FIG.

[0076] The guide rail 850 in this modification is different in length and shape from the guide rail 450 in the binding processing unit 400 in the embodiment described above. Specifically, the guide rail 850 in this modification is also linear on the front side, and the above-mentioned rotation mechanism 700 is provided at a position adjacent to the guide rail 850 on the front side. This makes it possible to rotate the stapled binding device 500 or the stapleless binding device 600 using the rotation mechanism 700 on the front side of the image forming apparatus 10 to perform diagonal binding, and makes it possible to replenish staples for the stapled binding device 500. In other words, even if the guide rail is linear, diagonal binding is possible on the front side, making it possible to shorten the length of the guide rail, and making it possible to miniaturize the apparatus.

[0077] In the image forming apparatus 10 described above, an example has been given in which a staple-based binding device 500 that uses a binding member (staple) is used as the first binding device, and a staple-less binding device 600 that does not use a binding member (staple) is used as the second binding device; however, it is also possible for both the first and second binding devices to use binding members, and for example, the binding members used may be of different types.

[0078] In addition, in the image forming apparatus 10 described above, a binding processing unit 400 having two binding devices has been described as an example, but the present invention is not limited to this and can be applied to a binding processing unit having one binding device, and can also be applied to a binding processing unit having three or more binding devices. [Explanation of symbols]

[0079] 10. Image forming device 400···Binding processing unit 450···Guide rail 500 Staple binding device 502...Pedestal 504... Rotating table 506···Guide pin 600 Staple-free binding device 602...Pedestal 604... Rotating table 606···Guide pin 700 Rotation mechanism 702 Rotation mechanism body 704... Urging member 706... Shaft 708···Guide groove 710 Drive source 712···Cam

Claims

1. a binding device that performs a binding process on the paper stack; A guide rail for moving the binding device; a rotation mechanism that is disposed at a position adjacent to the guide rail and rotates the binding device that has moved on the guide rail as the binding device moves, the binding device is rotatably attached to a base that moves on the guide rail via a rotating base, The rotation mechanism rotates the binding device obliquely by moving a guide pin fixed to the rotating table along a guide groove in association with the movement of the binding device and moving the guide pin along the guide groove. Aftertreatment device.

2. The post-processing device according to claim 1 , further comprising a retracting mechanism that retracts the rotation mechanism to a position where the binding device is not rotated even when the binding device has moved to a preset position.

3. A binding device that performs a binding process on a stack of paper; A guide rail for moving the binding device; a rotation mechanism that is disposed at a position adjacent to the guide rail and rotates the binding device that has moved on the guide rail as the binding device moves; a retracting mechanism that retracts the rotation mechanism to a position where the binding device is not rotated even when the binding device has moved to a preset position, The retraction mechanism includes a biasing member that biases the rotation mechanism so that the binding device, which has moved to a preset position, is positioned to rotate, and a cam mechanism that moves the rotation mechanism so that the binding device, which has moved to a preset position, is positioned not to rotate. Aftertreatment device.

4. a first binding device that executes a binding process on a stack of paper sheets; a second binding device that performs a binding process different from that of the first binding device; a guide rail for causing one of the first binding device and the second binding device to wait in a waiting area and for moving the other; a rotation mechanism that is disposed at a position adjacent to the guide rail and rotates the first binding device or the second binding device that has moved on the guide rail, the first binding device and the second binding device are rotatably attached to a base that moves on the guide rail via a rotating base, The rotation mechanism rotates the first binding device or the second binding device obliquely by moving a guide pin fixed to the rotating table along a guide groove in association with the movement of the first binding device or the second binding device and moving the guide pin along the guide groove. Aftertreatment device.

5. A first binding device that performs a binding process on a stack of paper; a second binding device that performs a binding process different from that of the first binding device; a guide rail for causing one of the first binding device and the second binding device to wait in a waiting area and for moving the other; a rotation mechanism that is disposed at a position adjacent to the guide rail and rotates the first binding device or the second binding device that has moved on the guide rail as the first binding device or the second binding device moves; a retraction mechanism that retracts the rotation mechanism to a position where the first binding device or the second binding device is not rotated even when the first binding device or the second binding device has moved to a preset position, The retraction mechanism includes a biasing member that biases the rotation mechanism so that the first binding device or the second binding device that has moved to a preset position is rotated, and a cam mechanism that moves the rotation mechanism so that the first binding device or the second binding device that has moved to a preset position is not rotated. Aftertreatment device.

6. The first binding device binds the sheets of paper using a binding member, The second binding device binds the paper sheets without using the binding member. The post-processing device according to claim 4 or 5.

7. an image forming unit that forms an image on a sheet; a post-processing device that staples a stack of sheets on which images have been formed by the image forming unit; Equipped with The post-treatment device includes: a binding device that performs a binding process on the paper stack; A guide rail for moving the binding device; a rotation mechanism that is disposed at a position adjacent to the guide rail and rotates the binding device that has moved on the guide rail as the binding device moves, the binding device is rotatably attached to a base that moves on the guide rail via a rotating base, The rotation mechanism rotates the binding device obliquely by moving a guide pin fixed to the rotating table along a guide groove in association with the movement of the binding device and moving the guide pin along the guide groove. Image forming device.

8. An image forming unit that forms an image on a sheet of paper; a post-processing device that staples a stack of sheets on which images have been formed by the image forming unit; Equipped with The post-treatment device includes: a binding device that performs a binding process on the paper stack; A guide rail for moving the binding device; a rotation mechanism that is disposed at a position adjacent to the guide rail and rotates the binding device that has moved on the guide rail as the binding device moves; a retracting mechanism that retracts the rotation mechanism to a position where the binding device is not rotated even when the binding device has moved to a preset position, The retraction mechanism includes a biasing member that biases the rotation mechanism so that the binding device, which has moved to a preset position, is positioned to rotate, and a cam mechanism that moves the rotation mechanism so that the binding device, which has moved to a preset position, is positioned not to rotate. Image forming device.

Images