Media processing device and image forming system

Abstract

To provide a medium processing device that changes a posture of a binding processing unit with a small and simple configuration.SOLUTION: A movable wall of a medium processing device: maintains a blocking posture and guides a part to be guided to a second passage when the part to be guided moving from an end side to a center side in a main scanning direction comes into contact with a first passage; is movable to an open position to allow the part to be guided to pass through when the part to be guided moving from the end side to the center side in the main scanning direction comes into contact with the second passage; maintains the blocking posture and guides the part to be guided to the first passage when the part to be guided moving from the center side to the end side in the main scanning direction comes into contact with the second passage; is movable to an open position to allow the part to be guided to pass through when the part to be guided moving from the center side to the end side in the main scanning direction comes into contact with the first passage.SELECTED DRAWING: Figure 12

Description

[Technical Field]

[0001] The present invention relates to a media processing device and an image forming system. [Background technology]

[0002] Conventionally, media processing devices have been known that bundle and bind sheet-like media on which images have been formed by an image forming device. Because paper is a widely known example of sheet-like media, this specification uses a "sheet stack" of multiple sheets of paper as an example of a bundle of sheet-like media. Such media processing devices include, for example, a staple binding processing unit that uses staples to bind a bundle of sheets, or a pressure binding processing unit that pressurizes and deforms a bundle of sheets to bind them (hereinafter, these will be collectively referred to as a "binding processing unit").

[0003] Furthermore, some media processing devices with the above configuration have a mechanism that changes the position of the binding processing unit between a diagonal binding position, in which the binding is performed diagonally relative to the width direction (main scanning direction) of the medium, and a parallel binding position, in which the binding is performed parallel to the width direction of the medium (see, for example, Patent Document 1). Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the technology of Patent Document 1, the binding processing unit rotates significantly, so a large space is required to change the position of the binding processing unit, which results in an increase in the size of the media processing device.

[0005] The present invention has been made to solve such problems, and has an object to provide a medium processing device that changes the posture of a binding processing section with a small and simple configuration. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems, one aspect of the present invention includes a conveying unit that conveys media in a conveying direction, a tray that can support a plurality of the media conveyed by the conveying unit, a binding processing unit that binds the plurality of media supported by the tray, a movement mechanism that moves the binding processing unit in a main scanning direction that is perpendicular to the conveying direction along the surfaces of the media supported by the tray, and a switching mechanism that guides guided portions provided in the binding processing unit to switch between an oblique binding posture in which a longitudinal direction of a binding area to be bound by the binding processing unit is inclined with respect to the main scanning direction and a parallel binding posture in which the longitudinal direction of the binding area faces the main scanning direction, the switching mechanism including: a first passage that extends in the main scanning direction and into which the guided portions enter when the binding processing unit is in the oblique binding posture; a second passage that extends in the main scanning direction upstream of the first passage in the conveying direction and into which the guided portions enter when the binding processing unit is in the parallel binding posture; the movable wall is movable between a blocking position where the first passage and the second passage are blocked and the first passage and the second passage are connected to each other, and an open position where at least one of the first passage and the second passage is opened; and a biasing member that biases the movable wall toward the blocking position, wherein when the guided portion moving through the first passage from an end side to a center side in the main scanning direction abuts the movable wall, the movable wall maintains the blocking position to guide the guided portion into the second passage, when the guided portion moving through the second passage from an end side to a center side in the main scanning direction abuts the movable wall, the movable wall moves to the open position to allow the guided portion to pass, when the guided portion moving through the second passage from a center side to an end side in the main scanning direction abuts the movable wall, the movable wall maintains the blocking position to guide the guided portion into the first passage, and when the guided portion moving through the first passage from a center side to an end side in the main scanning direction abuts the movable wall, the movable wall moves to the open position to allow the guided portion to pass. [Effects of the Invention]

[0007] According to the present invention, it is possible to obtain a medium processing device that changes the posture of a binding processing section with a small and simple configuration. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a diagram showing the overall configuration of an image forming system. [Figure 2] FIG. 2 is a diagram showing the internal structure of the post-processing device. [Figure 3] FIG. 2 is a side view of the edge binding mechanism according to the first embodiment. [Figure 4] FIG. 2 is a plan view of the edge binding mechanism according to the first embodiment. [Figure 5] 10A and 10B are diagrams showing the staple binding processing section as viewed from above and below. [Figure 6] 3A and 3B are perspective and plan views of a cam; [Figure 7] 3A and 3B are perspective and plan views of a boss and a restriction wall; [Figure 8] 3A and 3B are cross-sectional and bottom views of a base plate; [Figure 9] FIG. [Figure 10] 10A and 10B are a perspective view and a plan view showing a state in which a movable member is attached to a boss. [Figure 11] FIG. 2 is a hardware configuration diagram of a control block that controls the operation of the post-processing device. [Figure 12] 10A and 10B are diagrams illustrating the movement of the cam when the binding portion in the diagonal binding position at the end side is changed to the parallel binding position at the center side. [Figure 13] 10A and 10B are diagrams illustrating the movement of the cam when the binding portion in the parallel binding position at the center side is changed to the oblique binding position at the end side. [Figure 14] 10A and 10B are diagrams illustrating the movement of the cam when the binding portion in the diagonal binding position at the end side is changed to the parallel binding position at the end side. [Figure 15] 10A and 10B are diagrams illustrating the movement of the cam when the binding portion in the parallel binding position at the end side is changed to the parallel binding position at the center side. [Figure 16] 10A and 10B are diagrams showing the positions and orientations of staples that bind a stack of paper sheets; [Figure 17] FIG. 10 is a diagram illustrating the role of the guide wall. [Figure 18] FIG. 10 is a plan view of an edge binding mechanism according to a second embodiment. [Figure 19] 10A and 10B are diagrams showing the movement of a movable wall according to the third embodiment. [Figure 20] 10A and 10B are diagrams showing the movement of a movable wall according to the fourth embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] [First embodiment] An image forming system 1 according to the present invention will be described below with reference to the drawings. Fig. 1 is a diagram showing the overall configuration of the image forming system 1. The image forming system 1 has the function of forming an image on a sheet P (medium) and performing post-processing on the sheet P on which the image has been formed. As shown in Fig. 1, the image forming system 1 is made up of an image forming device 2 and a post-processing device 3 (medium processing device).

[0010] The image forming device 2 forms an image on a sheet P and discharges the sheet P with the image formed thereon to the post-processing device 3. The image forming device 2 mainly comprises a tray in which the sheet P is stored, a transport unit that transports the sheet P stored in the tray, and an image forming unit that forms an image on the sheet P transported by the transport unit. The image forming unit may be of an inkjet type that forms an image using ink, or of an electrophotographic type that forms an image using toner. The configuration of the image forming device 2 is already well known, so a detailed description will be omitted.

[0011] FIG. 2 is a diagram showing the internal structure of the post-processing device 3. The post-processing device 3 performs post-processing on the sheets P on which images have been formed by the image forming device 2. The post-processing according to the first embodiment is a staple process that binds a bundle of multiple sheets P on which images have been formed (hereinafter referred to as a "sheet bundle"). More specifically, the staple process according to the first embodiment is so-called "staple binding" in which staples are passed through the sheet bundle to bind it. Furthermore, staple binding includes an end binding process that binds the end of the sheet bundle in the transport direction, and a saddle binding process that binds the center of the sheet bundle.

[0012] The post-processing device 3 includes conveyance roller pairs 10-19 (conveyance section) and a switching claw 20. The conveyance roller pairs 10-19 convey the paper P supplied from the image forming device 2 inside the post-processing device 3. More specifically, the conveyance roller pairs 10-13 convey the paper P along a first conveyance path Ph1. Furthermore, the conveyance roller pairs 14-15 convey the paper P along a second conveyance path Ph2. Furthermore, the conveyance roller pairs 16-19 convey the paper P along a third conveyance path Ph3.

[0013] The first transport path Ph1 is a path that leads from the supply port of the paper P from the image forming device 2 to the discharge tray 21. The second transport path Ph2 is a path that branches off from the first transport path Ph1 between the pairs of transport rollers 11 and 14 in the transport direction, and leads to the discharge tray 26 via the internal tray 22. The third transport path Ph3 is a path that branches off from the first transport path Ph1 between the pairs of transport rollers 11 and 14 in the transport direction, and leads to the discharge tray 30.

[0014] The switching claw 20 is disposed at a branching position of the first transport path Ph1 and the second transport path Ph2. The switching claw 20 is configured to be switchable between a first position where the sheet P is discharged to the discharge tray 21 via the first transport path Ph1, and a second position where the sheet P transported along the first transport path Ph1 is guided to the second transport path Ph2. Furthermore, when the trailing edge of the sheet P that has entered the second transport path Ph2 passes the pair of transport rollers 11, the pair of transport rollers 14 is rotated in the reverse direction, thereby guiding the sheet P to the third transport path Ph3. The post-processing device 3 also includes multiple sensors that detect the position of the sheet P on each of the transport paths Ph1, Ph2, and Ph3. The sensors that detect the position of the sheet P during transport are indicated by solid black triangles (▲) in FIG. 2.

[0015] The post-processing device 3 includes a discharge tray 21. The discharge tray 21 supports the paper sheets P discharged through the first conveying path Ph1. Of the paper sheets P supplied from the image forming device 2, those that are not to be stapled are discharged to the discharge tray 21.

[0016] The post-processing device 3 also includes an internal tray 22 (tray), an end fence 23, side fences 24L and 24R, an edge-stitching mechanism 25, and an output tray 26. The internal tray 22, the end fence 23, the side fences 24L and 24R, and the edge-stitching mechanism 25 perform edge-stitching processing on the sheets P transported through the second transport path Ph2. A stack of sheets P supplied from the image forming device 2 that has been edge-stitched is output to the output tray 26. Hereinafter, the direction from the transport roller pair 15 toward the end fence 23 is defined as the "conveyance direction of the sheets P." Furthermore, the thickness direction of the sheets P supported by the internal tray 22 and the direction perpendicular to the conveyance direction of the sheets P are defined as the "main scanning direction (width direction of the sheets P)." The conveyance direction, thickness direction, and main scanning direction are perpendicular to one another.

[0017] The internal tray 22 temporarily supports multiple sheets of paper P that are transported sequentially through the second transport path Ph2. The end fence 23 aligns the position of the stack of sheets supported by the internal tray 22 in the transport direction. The side fences 24L, 24R align the position of the stack of sheets supported by the internal tray 22 in the main scanning direction. The edge binding mechanism 25 binds the edges of the stack of sheets aligned by the end fence 23 and the side fences 24L, 24R. Then, the transport roller pair 15 discharges the stack of sheets that has been edge-stitched onto the discharge tray 26. The configuration of the edge binding mechanism 25 will be described later with reference to FIGS. 3 to 10.

[0018] The post-processing device 3 further includes an end fence 27, a binding processing section 28, a paper folding blade 29, and a discharge tray 30. The end fence 27, the binding processing section 28, and the paper folding blade 29 perform saddle stitching on the paper sheets P transported through the third transport path Ph3. A bundle of paper sheets P that has been saddle stitched is discharged to the discharge tray 30 from among the paper sheets P supplied from the image forming device 2.

[0019] The end fence 27 aligns the positions in the conveying direction of multiple sheets P that are conveyed sequentially through the third conveying path Ph3. The end fence 27 is also configured to be movable between a binding position where the center of the sheet stack faces the binding processing unit 28, and a folding position where the center faces the paper folding blade 29. The binding processing unit 28 staples the center of the sheet stack aligned by the end fence 27 at the binding position. The paper folding blade 29 folds the sheet stack supported by the end fence 27 at the folding position in half and sandwiches it between the conveying roller pair 18. The conveying roller pairs 18 and 19 discharge the sheet stack that has been saddle-stitched onto the discharge tray 30.

[0020] FIG. 3 is a side view of the edge binding mechanism 25 according to the first embodiment. FIG. 4 is a plan view of the edge binding mechanism 25 according to the first embodiment. As shown in FIGS. 3 and 4, the edge binding mechanism 25 mainly includes a staple binding processing unit 40, which is an example of a binding processing unit, a movement mechanism 60, and a switching mechanism 70. The staple binding processing unit 40 performs staple binding on a plurality of sheets P supported by the internal tray 22. The movement mechanism 60 moves the staple binding processing unit 40 in the main scanning direction along the surfaces of the sheets P supported by the internal tray 22. The switching mechanism 70 switches the staple binding processing unit 40 (more specifically, the binding unit 42, which will be described later) between an inclined binding posture and a parallel binding posture.

[0021] Fig. 5 is a view of the staple binding processing unit 40 as seen from the top side (A) and the bottom side (B). Fig. 6 is a perspective view (A) and a plan view (B) of the cam 43. As shown in Figs. 3 to 6, the staple binding processing unit 40 mainly includes a base 41, a binding unit 42, a cam 43, and a transmission mechanism 44.

[0022] The base 41 is a plate-shaped member that supports the binding unit 42, the cam 43, and the transmission mechanism 44. The binding unit 42 is supported on the upper surface side of the base 41 so as to be rotatable around a rotation shaft 45 (first rotation axis) that extends in the thickness direction of the paper P. An externally toothed gear 46 is attached to the binding unit 42 and rotates integrally therewith. The binding unit 42 includes, for example, a magazine that stores a plurality of staples, and a clamping mechanism that presses the staples stored in the magazine against a stack of paper sheets to clamp the stack of paper sheets from both sides. The configuration of the binding unit 42 is already well known, so a detailed description will be omitted.

[0023] The cam 43 is supported on the underside of the base 41 so as to be rotatable around a rotation shaft 52 (second rotation axis) extending in the thickness direction of the paper P. As shown in FIG. 6, the cam 43 mainly includes a cylindrical portion 47, a protruding portion 48, and a guided portion 49. The cylindrical portion 47 is a bottomed cylinder that is closed on one axial side and open on the other. An internal gear 50 is formed on the inner peripheral surface of the cylindrical portion 47. The protruding portion 48 protrudes radially outward from a portion of the outer peripheral surface of the cylindrical portion 47. The guided portion 49 protrudes from the tip of the protruding portion 48 in the direction opposite to the base 41. The guided portion 49 is guided by the switching mechanism 70 to rotate the cam 43.

[0024] The transmission mechanism 44 transmits the rotation of the cam 43 to the binding unit 42. The transmission mechanism 44 mainly includes rotation shafts 51 and 52, a first gear 53, a second gear 54, and a third gear 55. The components 51 to 55 of the transmission mechanism 44 are disposed inside the cylindrical portion 47 (i.e., the internal gear 50).

[0025] The rotating shafts 51 and 52 extend in the thickness direction of the paper P. The rotating shaft 51 is rotatably supported by the cam 43 (more specifically, the cylindrical portion 47) on the underside of the base 41. The rotating shaft 52 is rotatably supported by the base 41 and penetrates the base 41 in the thickness direction. The rotating shaft 52 also rotatably supports the cam 43. However, the cam 43 and the rotating shaft 52 rotate independently of each other. In other words, the cam 43 and the rotating shaft 52 do not rotate together.

[0026] The first gear 53 is supported by the rotating shaft 51 on the underside of the base 41 and rotates integrally therewith. The first gear 53 meshes with the internal gear 50 and the second gear 54. The second gear 54 is supported by the rotating shaft 52 on the underside of the base 41 and rotates integrally therewith. The second gear 54 meshes with the first gear 53. The third gear 55 is supported by the rotating shaft 52 on the upper side of the base 41 and rotates integrally therewith. That is, the rotating shaft 52, the second gear 54, and the third gear 55 rotate integrally therewith. The third gear 55 meshes with the external gear 46.

[0027] That is, the rotation of the cam 43 is transmitted to the binding unit 42 via the internal gear 50, the first gear 53, the second gear 54, the rotating shaft 52, the third gear 55, and the external gear 46. As a result, when the staple binding processing unit 40 is viewed in a plan view, the binding unit 42 rotates in the direction opposite to the rotation direction of the cam 43. As a result, the binding unit 42 can be switched between the diagonal binding posture and the parallel binding posture.

[0028] As shown in Fig. 16(A), the oblique binding posture is the posture of the staple binding processing unit 40 (binding unit 42) that binds a stack of paper sheets with the longitudinal direction of the staples S1 and S2 inclined with respect to the main scanning direction. As shown in Fig. 16(B) and Fig. 16(C), the parallel binding posture is the posture of the staple binding processing unit 40 (binding unit 42) that binds a stack of paper sheets with the longitudinal direction of the staples S1 and S2 facing the main scanning direction. The area on the stack of paper sheets where the staples S1 and S2 are arranged is an example of a binding area.

[0029] The movement mechanism 60 mainly includes a guide shaft 61 and a movement motor 62 (see FIG. 11). The guide shaft 61 extends in the main scanning direction downstream of the internal tray 22 in the conveying direction. The guide shaft 61 supports the stapling processing unit 40 so that it can move in the main scanning direction. The movement motor 62 generates a driving force for moving the stapling processing unit 40 in the main scanning direction. The driving force of the movement motor 62 is transmitted via pulleys 63 and 64, a timing belt 65, etc., so that the stapling processing unit 40 moves along the guide shaft 61 in the main scanning direction.

[0030] Fig. 7 is a perspective view (A) and a plan view (B) of the bosses 73L, 73R and the restriction walls 74L, 74R. Fig. 8 is a cross-sectional view (A) and a bottom view (B) of the base plate 71. Fig. 9 is a perspective view of the movable members 75L, 75R. Fig. 10 is a perspective view (A) and a plan view (B) of the movable members 75L, 75R attached to the bosses 73L, 73R.

[0031] The switching mechanism 70 switches the staple binding processing section 40 (more specifically, the staple binding section 42) between the diagonal binding posture and the parallel binding posture by guiding the guided portion 49 and rotating the cam 43. The switching mechanism 70 mainly includes a base plate 71, guide walls 72a, 72b, 72c, 72d, and 72e, bosses 73L and 73R, restriction walls 74L and 74R, movable members 75L and 75R, and coil springs 76L and 76R (biasing members).

[0032] As shown in Fig. 4, the base plate 71 is a plate-like member that is located below the stapling processing unit 40 and extends across the entire range of movement of the stapling processing unit 40. A recess 77 is formed in the base plate 71. The guide walls 72a to 72e are arranged inside the recess 77 at predetermined intervals in the main scanning direction. The guide walls 72a to 72e divide the recess 77 into a first passage 77a and a second passage 77b. The first passage 77a and the second passage 77b communicate with each other through gaps between the adjacent guide walls 72a to 72e.

[0033] The first passage 77a extends in the main scanning direction downstream of the second passage 77b in the conveying direction. The guided portion 49 enters the first passage 77a when the binding unit 42 is in the diagonal binding position. The second passage 77b extends in the main scanning direction upstream of the first passage 77a in the conveying direction. The guided portion 49 enters the second passage 77b when the binding unit 42 is in the parallel binding position. In other words, when the staple binding processing unit 40 moves in the main scanning direction, the guided portion 49 moves along the first passage 77a or the second passage 77b.

[0034] The bosses 73L and 73R are disposed in the recess 77, spaced apart in the main scanning direction. More specifically, the boss 73L is disposed between the guide walls 72a and 72b, and the boss 73R is disposed between the guide walls 72d and 72e. The bosses 73L and 73R are disposed at the boundary between the first passage 77a and the second passage 77b in the transport direction. As shown in FIG. 7, the bosses 73L and 73R have cylindrical outer shapes that protrude from the recess 77 in the thickness direction of the paper P. Furthermore, as shown in FIG. 8, the internal spaces of the bosses 73L and 73R penetrate to the rear surface side of the base plate 71. The bosses 73L and 73R rotatably support the shafts 78L and 78R of the movable members 75L and 75R, which will be described later.

[0035] 7, the restricting walls 74L, 74R extend from the bosses 73L, 73R on both sides in the conveying direction. The restricting walls 74L, 74R are disposed in positions where they can come into contact with contact walls 80L, 70R of the movable members 75L, 75R, which will be described later. The restricting walls 74L, 74R restrict the rotation of the movable members 75L, 75R in a first direction and allow the rotation of the movable members 75L, 75R in a second direction. On the other hand, the restricting walls 74L, 74R are disposed in positions where they do not come into contact with the guided portion 49.

[0036] The movable members 75L, 75R are supported by the bosses 73L, 73R so as to be rotatable (one example of movable) around a rotation axis extending in the thickness direction of the paper P. The movable members 75L, 75R have the same shape except that they are reversed left and right (in the main scanning direction), so the following will describe the movable member 75L in detail. As shown in Figure 9, the movable member 75L mainly includes a shaft portion 78L, a movable wall 79L, a contact wall 80L, and a locking portion 81L.

[0037] As shown in FIG. 8, the shaft 78L is inserted into the boss 73L and rotatably supported. One end of the shaft 78L protrudes toward the upper surface of the base plate 71, and the other end of the shaft 78L protrudes toward the lower surface of the base plate 71. The movable wall 79L is attached to one end of the shaft 78L. The movable wall 79L is disposed in a position where it can contact the guided portion 49 but does not contact the regulating wall 74L. The longitudinal direction of the movable wall 79L faces the transport direction in a blocking position (FIG. 12(A)) described later, and faces the main scanning direction in an opening position (FIG. 12(C)) described later.

[0038] The contact walls 80L protrude from both sides of the movable wall 79L in the main scanning direction toward the base plate 71. When the movable member 75L attempts to rotate in a first direction (counterclockwise in FIG. 10(B)), the contact walls 80L come into contact with the restriction wall 74L to prevent the rotation of the movable member 75L. On the other hand, when the movable member 75L attempts to rotate in a second direction (clockwise in FIG. 10(B)), the contact walls 80L move away from the restriction wall 74L to allow the rotation of the movable member 75L.

[0039] As shown in FIG. 8 , the locking portion 81L is attached to the other end of the shaft portion 78L. One end of a coil spring 76L disposed on the underside of the base plate 71 is locked to the locking portion 81L. One end of the coil spring 76L is locked to the locking portion 81L, and the other end is fixed to the base plate 71. The coil spring 76L biases the movable member 75L so that the movable wall 79L moves toward the blocking position. That is, the contact wall 80L contacts the restriction wall 74L under the biasing force of the coil spring 76L, thereby maintaining the movable wall 79L in the blocking position.

[0040] The blocking position is a position of the movable wall 79L when the movable wall 79L blocks the first passage 77a and the second passage 77b and allows the first passage 77a and the second passage 77b to communicate with each other. The longitudinal direction of the movable wall 79L in the blocking position faces the conveyance direction. As a result, when the movable wall 79L is in the blocking position, the guided portion 49 moving through the first passage 77a or the second passage 77b cannot cross the movable wall 79L. On the other hand, when the movable wall 79L is in the blocking position, the guided portion 49 can move from one of the first passage 77a and the second passage 77b to the other.

[0041] The open position is the position of the movable wall 79L when at least one of the first passage 77a and the second passage 77b (in the first embodiment, both) is open. The longitudinal direction of the movable wall 79L in the open position faces the main scanning direction. That is, the movable wall 79L rotates 90° around a rotation axis (shaft 78L) extending in the thickness direction of the paper P between the blocking position and the open position. As a result, the guided portion 49 moving through the first passage 77a or the second passage 77b can clear the movable wall 79L.

[0042] When the guided portion 49, which moves from the end side to the center side in the main scanning direction (to the right in FIG. 10B ) on the first passage 77a, comes into contact with the movable wall 79L in the blocking position, the contact wall 80L comes into contact with the regulating wall 74L, and the movable wall 79L is maintained in the blocking position. Then, the guided portion 49 is guided from the first passage 77a to the second passage 77b along the side surface of the movable wall 79L maintained in the blocking position. As a result, the position of the binding unit 42 changes from the diagonal binding position to the parallel binding position.

[0043] Furthermore, when the guided portion 49 moving through the second passage 77b from the end side toward the center in the main scanning direction (to the right in FIG. 10(B)) comes into contact with the movable wall 79L, the movable wall 79L rotates from the blocking position to the open position. Then, the movable wall 79L in the open position allows the guided portion 49 of the second passage 77b to pass toward the center in the main scanning direction. Furthermore, after the guided portion 49 has passed, the movable wall 79L returns to the blocking position due to the biasing force of the coil spring 76L.

[0044] Furthermore, when the guided portion 49 moving in the second passage 77b from the center side to the end side in the main scanning direction (to the left in FIG. 10B) abuts against the movable wall 79L in the blocking position, the contact wall 80L contacts the regulating wall 74L, and the movable wall 79L is maintained in the blocking position. Then, the guided portion 49 is guided from the second passage 77b to the first passage 77a along the side surface of the movable wall 79L maintained in the blocking position. As a result, the position of the binding unit 42 changes from the parallel binding position to the diagonal binding position.

[0045] Furthermore, when the guided portion 49 moving through the first passage 77a from the center toward the end in the main scanning direction (to the left in FIG. 10(B)) comes into contact with the movable wall 79L, the movable wall 79L rotates from the blocking position to the open position. Then, the movable wall 79L in the open position allows the guided portion 49 of the first passage 77a to pass toward the end in the main scanning direction. Furthermore, after the guided portion 49 has passed, the movable wall 79L returns to the blocking position due to the biasing force of the coil spring 76L.

[0046] Fig. 11 is a hardware configuration diagram of a control block that controls the operation of post-processing device 3. As shown in Fig. 11, post-processing device 3 includes a central processing unit (CPU) 101, a random access memory (RAM) 102, a read only memory (ROM) 103, a hard disk drive (HDD) 104, and an interface (I / F) 105, all of which are connected via a common bus 109.

[0047] The CPU 101 is a computing means and controls the overall operation of the post-processing device 3. The RAM 102 is a volatile storage medium that can read and write information at high speed, and is used as a work area when the CPU 101 processes information. The ROM 103 is a read-only non-volatile storage medium that stores programs such as firmware. The HDD 104 is a non-volatile storage medium that can read and write information and has a large storage capacity, and stores an OS (Operating System), various control programs, application programs, etc.

[0048] The post-processing device 3 processes a control program stored in the ROM 103, an information processing program (application program) loaded into the RAM 102 from a storage medium such as the HDD 104, and the like using the arithmetic functions of the CPU 101. This processing constitutes a software control unit including various functional modules of the post-processing device 3. The combination of the software control unit thus constituted and the hardware resources installed in the post-processing device 3 constitutes a functional block that realizes the functions of the post-processing device 3. In other words, the CPU 101, RAM 102, ROM 103, and HDD 104 constitute a controller 100 that controls the operation of the post-processing device 3.

[0049] The I / F 105 is an interface that connects the conveying roller pairs 10, 11, 14, and 15, the switching claw 20, the side fences 24L and 24R, the binding unit 42, the movement motor 62, and the operation panel 110 to the common bus 109. The controller 100 operates the conveying roller pairs 10, 11, 14, and 15, the switching claw 20, the side fences 24L and 24R, the binding unit 42, and the movement motor 62 through the I / F 105. The controller 100 also grasps the position of the stapling processing unit 40 in the main scanning direction using position sensors (such as a rotary encoder for the movement motor 62 and a linear encoder arranged on the movement path of the stapling processing unit 40). Note that while FIG. 11 illustrates only the components that perform the edge binding process, the components that perform the saddle stitching process are also similarly controlled by the controller 100.

[0050] The operation panel 110 includes an operation unit that accepts operations from the user and a display (notification unit) that notifies the user of information. The operation unit includes, for example, hard keys, a touch panel superimposed on the display, etc. The operation panel 110 acquires information from the user through the operation unit and provides the information to the user through the display. Note that the notification unit is not limited to a display, and may be an LED lamp, a speaker, etc.

[0051] Fig. 12 is a diagram showing the movement of the cam 43 when the binding portion 42 in the diagonal binding position at the end side is changed to the parallel binding position at the center side. Fig. 13 is a diagram showing the movement of the cam 43 when the binding portion 42 in the parallel binding position at the center side is changed to the diagonal binding position at the end side. Fig. 14 is a diagram showing the movement of the cam 43 when the binding portion 42 in the diagonal binding position at the end side is changed to the parallel binding position at the end side. Fig. 15 is a diagram showing the movement of the cam 43 when the binding portion 42 in the parallel binding position at the end side is changed to the parallel binding position at the center side. Fig. 16 is a diagram showing the positions and orientations of the binding needles S1 and S2 (i.e., the binding area) that bind the paper stack.

[0052] 12A, when the guided portion 49 is positioned on the first passage 77a at the end side in the main scanning direction of the movable wall 79L, the binding unit 42 is in a diagonal binding position. When the binding unit 42 binds a stack of paper sheets in this state, the bottom left corner of the stack of paper sheets is bound by the staple S1 that is inclined with respect to the main scanning direction, as shown in FIG.

[0053] Next, when the controller 100 drives the movement motor 62 to move the staple binding processing unit 40 toward the center in the main scanning direction, the guided portion 49, which moves toward the center in the main scanning direction along the first passage 77a, abuts against the movable wall 79L in the blocking position, as shown in FIG. 12(B). Then, the guided portion 49 is guided from the first passage 77a to the second passage 77b along the side surface of the movable wall 79L, which maintains the blocking position. This causes the position of the binding unit 42 to change from the diagonal binding position to the parallel binding position.

[0054] When the controller 100 further moves the staple binding processing unit 40 toward the center in the main scanning direction, the movable wall 79L, pressed by the guided portion 49, rotates from the blocking position to the open position, as shown in FIG. 12(C). Then, as shown in FIG. 12(D), the guided portion 49 moves toward the center in the main scanning direction from the movable wall 79L through the opened second passage 77b. When the binding unit 42 binds the stack of sheets in this state, the center of the stack of sheets is stapled with staples S1 and S2 parallel to the main scanning direction, as shown in FIG. 16(B). Note that the positions and number of staples S1 and S2 are not limited to the example shown in FIG. 16(B).

[0055] Furthermore, as shown in FIG. 13(A), when the guided portion 49, which is located closer to the center in the main scanning direction than the movable wall 79L of the second passage 77b, is moved toward the end in the main scanning direction, the guided portion 49 abuts against the movable wall 79L in the blocking position, as shown in FIG. 13(B). The guided portion 49 is then guided from the second passage 77b to the first passage 77a along the side surface of the movable wall 79L, which maintains the blocking position. This causes the binding unit 42 to change position from the parallel binding position to the diagonal binding position. When the controller 100 further moves the staple binding processing unit 40 toward the end in the main scanning direction, the movable wall 79L, which is pushed by the guided portion 49, rotates from the blocking position to the open position, as shown in FIG. 13(C). Then, as shown in FIG. 13(D), the guided portion 49 moves toward the end in the main scanning direction than the movable wall 79L through the opened first passage 77a.

[0056] 14(A) and 14(B), when the guided portion 49, which is located on the end side of the movable wall 79L of the first passage 77a in the main scanning direction, is moved toward the center in the main scanning direction, the guided portion 49 moves to the second passage 77b, and the movable wall 79L changes its posture to the open posture. As a result, the posture of the binding unit 42 changes from the diagonal binding posture to the parallel binding posture. This operation is common to FIGS. 12(A) to 12(C). Then, when the controller 100 moves the staple binding processing unit 40 toward the end side in the main scanning direction before the guided portion 49 passes through the movable wall 79L, the guided portion 49 moves to the end side in the main scanning direction along the second passage 77b, as shown in FIG. 14(C). As a result, the staple binding processing unit 40 moves toward the end side in the main scanning direction of the movable wall 79L, with the binding unit 42 still in the parallel binding posture. When the binding unit 42 binds the stack of paper sheets in this state, the bottom left corner of the stack of paper sheets is bound by the staple S1 parallel to the main scanning direction, as shown in FIG. 16(C).

[0057] Furthermore, as shown in Fig. 15(A), when the guided portion 49, which is located on the end side in the main scanning direction of the movable wall 79L of the second passage 77b, is moved toward the center in the main scanning direction, the movable wall 79L, which is pushed by the guided portion 49, rotates from the blocked position to the open position, as shown in Fig. 15(B). Then, as shown in Fig. 15(C), the guided portion 49 moves toward the center in the main scanning direction of the movable wall 79L through the opened second passage 77b. As a result, the staple binding processing portion 40 reaches the center in the main scanning direction of the movable wall 79L, with the binding unit 42 remaining in the parallel binding position.

[0058] 12 to 15 can be applied not only to the movement between the guided portion 49 and the movable wall 79L, but also to the movement between the guided portion 49 and the movable wall 79R. As an example, when the guided portion 49 and the movable wall 79R move in a manner that is a left-right inversion of the movements in FIGS. 13(A) to 13(D) and then the binding unit 42 binds the stack of sheets, the lower right corner of the stack of sheets is bound by the staple S2 that is inclined with respect to the main scanning direction, as shown in FIG. 16(A). As another example, when the guided portion 49 and the movable wall 79R move in a manner that is a left-right inversion of the movements in FIGS. 14(A) to 14(C) and then the binding unit 42 binds the stack of sheets, the lower right corner of the stack of sheets is bound by the staple S2 that is parallel to the main scanning direction, as shown in FIG. 16(C).

[0059] FIG. 17 is a diagram illustrating the role of the guide wall 72c. As shown in FIG. 17, the guide wall 72c is disposed closer to the center in the main scanning direction than the movable walls 79L and 79R. Furthermore, the length of the guide wall 72c in the transport direction is longer than the other guide walls 72a, 72b, 72d, and 72e. The guide wall 72c blocks the first passage 77a and opens the second passage 77b. Furthermore, the first passage 77a and the second passage 77b communicate with each other at both ends of the guide wall 72c in the main scanning direction.

[0060] As shown in Fig. 17(A), the guide wall 72c allows the guided portion 49 to pass through the second passage 77b. As shown in Fig. 17(B), the guide wall 72c prevents the guided portion 49 from passing through the first passage 77a. As shown in Fig. 17(C), the guided portion 49 moving through the first passage 77a abuts against the guide wall 72c, thereby guiding the guided portion 49 into the second passage 77b.

[0061] According to the above embodiment, for example, the following advantageous effects are achieved.

[0062] According to the above embodiment, the posture of the staple binding processing unit 40 (binding unit 42) can be switched by allowing the movable walls 79L, 69R to rotate to one side and restricting their rotation to the other side. This makes it possible to change the posture of the staple binding processing unit 40 with a small and simple configuration. Furthermore, when the guided portions 49 pass the movable walls 79L, 69R, the coil springs 76L, 66R immediately change the posture of the movable walls 79L, 69R to the blocking posture, thereby shortening the processing time when the posture of the staple binding processing unit 40 is changed continuously.

[0063] Furthermore, according to the above embodiment, by arranging the bosses 73L, 73R, the regulating walls 74L, 74R, the movable members 75L, 75R, and the coil springs 76L, 76R at two locations spaced apart in the main scanning direction, it is possible to achieve diagonal binding and parallel binding on both sides of the main scanning direction.

[0064] Furthermore, according to the above embodiment, it is possible to downsize the mechanism for changing the posture of the binding portion 42 by accommodating the transmission mechanism 44 inside the internal gear 50. Furthermore, by using the transmission mechanism 44 instead of directly transmitting the rotation of the cam 43 to the binding portion 42, it is possible to amplify or reduce the amount of rotation of the cam 43 and transmit it to the binding portion 42.

[0065] Furthermore, according to the above embodiment, when the binding processing unit 40 passes between the movable members 75L and 75R, the guide wall 72c can forcibly change the posture of the binding unit 42 to the parallel binding posture. As a result, even if the oblique binding posture is maintained due to insufficient rotation of the cam 43 when passing through the movable walls 79L and 69R, the binding unit 42 can be switched to the parallel binding posture.

[0066] [Second embodiment] 18 is a plan view of an end binding mechanism 25A according to the second embodiment. Note that a detailed description of the commonalities with the first embodiment will be omitted, and the description will focus on the differences. The end binding mechanism 25A according to the second embodiment differs from the first embodiment in that it further includes a pressure binding processing unit 82 (second binding processing unit). The pressure binding processing unit 82 performs so-called "pressure binding," which binds a stack of sheets by pressurizing and deforming the stack of sheets in the thickness direction. The configuration of the pressure binding processing unit 82 is already well known, so a detailed description will be omitted.

[0067] The staple binding processing unit 40 and the pressure binding processing unit 82 are disposed at positions spaced apart in the main scanning direction. The movement mechanism 60 moves the staple binding processing unit 40 and the pressure binding processing unit 82 independently of each other in the main scanning direction. The standby position of the staple binding processing unit 40 is the end on one side in the main scanning direction (the left side in the example of FIG. 18), and the standby position of the pressure binding processing unit 82 is the end on the other side in the main scanning direction (the right side in the example of FIG. 18).

[0068] 18(B), while the staple binding processing unit 40 is waiting at the standby position (a state in which the staple binding processing unit 40 is not stapling a stack of sheets), the binding unit 42 is in the parallel binding position. At this time, the end portion (FIG. 18(B)) on the central side in the main scanning direction of the staple binding processing unit 40 in the parallel binding position is positioned closer to the end portion in the main scanning direction than when the staple binding processing unit 40 is in the diagonal binding position (FIG. 18(A)). In other words, by having the staple binding processing unit 40 in the parallel binding position wait at the standby position, the movement range of the pressure binding processing unit 82 in the main scanning direction is larger compared to when the staple binding processing unit 40 in the diagonal binding position waits at the standby position.

[0069] According to the second embodiment, it is possible to widen the range in the main scanning direction in which pressure binding can be performed by the pressure binding processing unit 82. Note that specific examples of combinations of the first binding processing unit and the second binding processing unit are not limited to the example in Fig. 18. As another example, both the first binding processing unit and the second binding processing unit may be the staple binding processing unit 40.

[0070] [Third embodiment] 19 is a diagram showing the movement of the movable wall 83L according to the third embodiment. Note that a detailed description of the commonalities with the first embodiment will be omitted, and the description will focus on the differences. The movable wall 83L according to the third embodiment differs from the movable wall 79L, which rotates around a rotation axis extending in the thickness direction of the paper P, in that it slides in the transport direction (another example of movement).

[0071] As shown in Fig. 19, of the side surfaces of the movable wall 83L facing the center in the main side chain direction (the right side in Fig. 19), a portion that is located within the first passage 77a in the blocking posture is inclined with respect to the main scanning direction, and the other portion is perpendicular to the main scanning direction. Also, of the side surfaces of the movable wall 83L facing the end side in the main scanning direction (the left side in Fig. 19), a portion that is located within the second passage 77b in the blocking posture is inclined with respect to the main scanning direction, and the other portion is perpendicular to the main scanning direction. Although not shown, a movable wall 83R having a shape obtained by mirror-mirroring the movable wall 83L is provided at a position separated in the main scanning direction.

[0072] 19(A), when the guided portion 49 moving toward the center in the main scanning direction through the first passage 77a abuts against the movable wall 83L in the blocking posture, the movable wall 83L maintains the blocking posture and guides the guided portion 49 into the second passage 77b. Also, as shown in FIG. 19(B), when the guided portion 49 moving toward the center in the main scanning direction through the second passage 77b abuts against the movable wall 83L in the blocking posture, the movable wall 83L slides downstream in the conveying direction and changes its posture to the open posture, thereby opening the second passage 77b. This allows the guided portion 49 to move toward the center in the main scanning direction through the second passage 77b relative to the movable wall 83L.

[0073] 19(C), when the guided portion 49 moving toward the end of the second passage 77b in the main scanning direction abuts against the movable wall 83L in the blocking position, the movable wall 83L maintains the blocking position and guides the guided portion 49 into the first passage 77a. Also, as shown in FIG. 19(D), when the guided portion 49 moving toward the end of the first passage 77a in the main scanning direction abuts against the movable wall 83L in the blocking position, the movable wall 83L slides toward the upstream side in the conveying direction and changes its position to the open position, thereby opening the first passage 77a. This allows the guided portion 49 to move toward the end of the first passage 77a in the main scanning direction relative to the movable wall 83L.

[0074] [Fourth embodiment] 20 is a diagram showing the movement of movable wall 84L according to the fourth embodiment. Note that a detailed description of commonalities with the first embodiment will be omitted, and the following description will focus on differences. Movable wall 84L according to the fourth embodiment differs from movable wall 79L, which rotates about a rotation axis extending in the thickness direction of paper P, in that it is made up of first rollers 85a and second rollers 85b that rotate about a rotation axis extending in the conveyance direction (another example of movement). Also, although not shown, movable wall 84R, which has a shape obtained by mirror-inverting movable wall 84L, is provided at a position separated in the main scanning direction.

[0075] The first roller 85a is disposed within the first passage 77a. As shown in FIG. 20A, when the guided portion 49 moving toward the center in the main scanning direction through the first passage 77a abuts against the first roller 85a, the first roller 85a maintains the closed position and guides the guided portion 49 into the second passage 77b. On the other hand, as shown in FIG. 20D, when the guided portion 49 moving toward the end in the main scanning direction through the first passage 77a abuts against the first roller 85a, the first roller 85a rotates about a rotation axis extending in the conveyance direction and changes its position to the open position. This allows the guided portion 49 to move toward the end in the main scanning direction of the movable wall 84L within the opened first passage 77a.

[0076] The second roller 85b is disposed within the second passage 77b. As shown in FIG. 20(B), when the guided portion 49 moving toward the center in the main scanning direction through the second passage 77b abuts against the second roller 85b, the second roller 85b rotates about a rotation axis extending in the conveyance direction and changes its posture to an open posture. This allows the guided portion 49 to move toward the center in the main scanning direction through the opened second passage 77b relative to the movable wall 84L. On the other hand, as shown in FIG. 20(C), when the guided portion 49 moving toward the end in the main scanning direction through the second passage 77b abuts against the second roller 85b, the second roller 85b maintains the closed posture and guides the guided portion 49 into the first passage 77a.

[0077] The control method described above may be realized, for example, by a program. That is, the control method is a method executed by a computer by causing an arithmetic unit, a storage unit, an input unit, an output unit, and a control unit to cooperate with each other based on the program. The program may be written to a storage unit or a storage medium and distributed, or distributed via a telecommunications line, etc.

[0078] The present invention is not limited to the above-described exemplary embodiments, and various modifications are possible without departing from the technical gist thereof. The present invention covers all technical matters included in the technical concept described in the claims. The above-described embodiments are preferred examples, but a person skilled in the art can realize various modifications from the disclosed content. Such modifications are also included in the technical scope described in the claims.

[0079] For example, aspects of the present invention are as follows. <1> a transport unit that transports the medium in a transport direction; a tray capable of supporting the plurality of media transported by the transport unit; a binding processing unit that binds the plurality of media supported on the tray; a moving mechanism that moves the binding processing unit in a main scanning direction perpendicular to the conveying direction along the surface of the medium supported by the tray; a switching mechanism that guides a guided portion provided in the binding processing portion to switch between an oblique binding posture in which a longitudinal direction of a binding area bound by the binding processing portion is inclined with respect to the main scanning direction and a parallel binding posture in which the longitudinal direction of the binding area faces the main scanning direction, The switching mechanism is a first passage extending in the main scanning direction, into which the guided portion enters when the binding processing portion is in the diagonal binding posture; a second passage extending in the main scanning direction upstream of the first passage in the conveying direction, into which the guided portion enters when the binding processing portion is in the parallel binding posture; a movable wall that is movable between a blocking position in which the first passage and the second passage are blocked and the first passage and the second passage are communicated with each other, and an opening position in which at least one of the first passage and the second passage is opened; a biasing member that biases the movable wall toward the blocking position, The movable wall is When the guided portion moves from an end side to a center side in the main scanning direction in the first passage and abuts against the first passage, the guided portion is guided into the second passage while maintaining the blocking posture. When the guided portion moving from the end side to the center side in the main scanning direction in the second passage abuts against the second passage, the guided portion is allowed to pass through the second passage by moving to the open position. When the guided portion moving from the center side to the end side in the main scanning direction in the second passage abuts against the second passage, the guided portion is guided into the first passage while maintaining the blocking posture. This media processing device is characterized in that when the guided portion moving from the center to the end in the main scanning direction along the first passage abuts it, it moves to the open position to allow the guided portion to pass. <2> The movable wall and the biasing member are disposed at two locations spaced apart in the main scanning direction. <1> 2 is a media processing device according to the first embodiment. <3> The binding processing unit includes: a binding unit that rotates between the parallel binding position and the diagonal binding position around a first rotation axis that extends in a thickness direction of the medium supported by the tray; a cam having the guided portion and an internal gear and rotating around a second rotation axis extending in the thickness direction; and a transmission mechanism disposed inside the internal gear for transmitting the rotation of the cam to the binding portion. <1> or <2> 2 is a media processing device according to the first embodiment. <4> the binding processing section has a base that rotatably supports the binding section on an upper surface and rotatably supports the cam on a lower surface, The binding portion has an externally toothed gear, The transmission mechanism includes: a first gear that rotates in mesh with the internal gear on the lower surface side of the base; a second gear that rotates in mesh with the first gear on the lower surface side of the base; a third gear that rotates in mesh with the external gear on the upper surface side of the base; a rotation shaft that penetrates the base in the thickness direction and rotates integrally with the second gear and the third gear. <3> 2 is a media processing device according to the first embodiment. <5> The switching mechanism includes a guide wall disposed closer to the center in the main scanning direction than the movable wall, blocking the first passage and guiding the guided portion located in the first passage to the second passage. <1> ~ <4> The media processing device is any one of the above. <6> the binding processing section includes a first binding processing section and a second binding processing section that are disposed at positions spaced apart from each other in the main scanning direction and are moved independently of each other by the movement mechanism, When the first binding processing section is moved to the end in the main scanning direction by the movement mechanism, an end portion of the first binding processing section in the parallel binding posture on the center side in the main scanning direction is positioned closer to the end in the main scanning direction than when the first binding processing section is in the diagonal binding posture. <1> ~ <5> The media processing device is any one of the above. <7> The moving mechanism includes: the first binding processing portion, which is in the diagonal binding posture and is located on the end side of the movable wall in the main scanning direction, is moved toward the center in the main scanning direction to change its posture to the parallel binding posture; the first binding processing section is moved to an end side in the main scanning direction before the guided portion passes through the movable wall in the open posture, and the first binding processing section is set to the parallel binding posture at an end side in the main scanning direction from the movable wall. <6> 2 is a media processing device according to the first embodiment. <8> the first binding processing unit is a staple binding processing unit that staples the plurality of media supported on the tray with staples, The second binding processing section is a pressure binding processing section that binds the plurality of media supported on the tray by applying pressure and deforming the media. <6> 2 is a media processing device according to the first embodiment. <9> an image forming device for forming an image on the medium; The plurality of media on which the images are formed by the image forming device are crimped and bound. <1> ~ <8> and a media processing device according to any one of the above. [Explanation of symbols]

[0080] 1: Image forming system 2: Image forming device 3: Post-processing device 10 to 19: Transport roller pair 20: Switching claw 21, 26, 30: Output tray 22: Internal tray 23,27: End fence 24L, 24R: Side fence 25, 25A: Edge binding mechanism 28: Binding processing section 29: Paper folding blade 40: Staple binding processing section 41: Bass 42: Binding section 43: Cam 44: Transmission mechanism 45, 51, 52: Rotating shaft 46: External gear 47: Cylindrical part 48:Protrusion 49: Guided part 50: Internal gear 53: First gear 54: Second gear 55: Third gear 60: Movement mechanism 61: Guide shaft 62: Travel motor 63,64: Pulley 65: Timing belt 70: Switching mechanism 71: Base plate 72a~72e: Guide wall 73L, 73R: Boss 74L, 74R: Restriction wall 75L, 75R: Movable parts 76L, 76R: Coil spring 77: Recess 77a: First passage 77b:Second passage 78L,78R:Shaft part 79L,79R,83L,83R,84L,84R: Movable wall 80L,80R: Contact wall 81L, 81R: Locking part 82: Pressure binding processing section 85a: First Colon 85b: Second Colonel 100: Controller 101: CPU 102: RAM 103:ROM 104: HDD 105: Interface 109: Common bus 110: Operation panel [Prior art documents] [Patent documents]

[0081] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-216492

Claims

1. a transport unit that transports the medium in a transport direction; a tray capable of supporting the plurality of media transported by the transport unit; a binding processing unit that binds the plurality of media supported on the tray; a moving mechanism that moves the binding processing unit in a main scanning direction perpendicular to the conveying direction along the surface of the medium supported by the tray; a switching mechanism that guides a guided portion provided in the binding processing portion to switch between an oblique binding posture in which a longitudinal direction of a binding area bound by the binding processing portion is inclined with respect to the main scanning direction and a parallel binding posture in which the longitudinal direction of the binding area faces the main scanning direction, The switching mechanism is a first passage extending in the main scanning direction, into which the guided portion enters when the binding processing portion is in the diagonal binding posture; a second passage extending in the main scanning direction upstream of the first passage in the conveying direction, into which the guided portion enters when the binding processing portion is in the parallel binding posture; a movable wall that is movable between a blocking position in which the first passage and the second passage are blocked and the first passage and the second passage are communicated with each other, and an opening position in which at least one of the first passage and the second passage is opened; a biasing member that biases the movable wall toward the blocking position, The movable wall is When the guided portion moves from an end side to a center side in the main scanning direction in the first passage and abuts against the first passage, the guided portion is guided into the second passage while maintaining the blocking posture. When the guided portion moving from the end side to the center side in the main scanning direction in the second passage abuts against the second passage, the guided portion is allowed to pass through the second passage by moving to the open position. When the guided portion moving from the center side to the end side in the main scanning direction in the second passage abuts against the second passage, the guided portion is guided into the first passage while maintaining the blocking posture. a media processing device that moves to the open position to allow the guided portion to pass when the guided portion moves from the center to the end in the main scanning direction along the first passage and abuts against the first passage;

2. 2. The media processing device according to claim 1, wherein the movable wall and the biasing member are disposed at two locations spaced apart in the main scanning direction.

3. The binding processing unit includes: a binding unit that rotates between the parallel binding position and the diagonal binding position around a first rotation axis that extends in a thickness direction of the medium supported by the tray; a cam having the guided portion and an internal gear, the cam rotating about a second rotation axis extending in the thickness direction; 2. The media processing device according to claim 1, further comprising a transmission mechanism disposed inside the internal gear for transmitting the rotation of the cam to the binding portion.

4. the binding processing section has a base that rotatably supports the binding section on an upper surface and rotatably supports the cam on a lower surface, The binding portion has an externally toothed gear, The transmission mechanism includes: a first gear that rotates in mesh with the internal gear on the lower surface side of the base; a second gear that rotates in mesh with the first gear on the lower surface side of the base; a third gear that rotates in mesh with the external gear on the upper surface side of the base; The media processing device according to claim 3 , further comprising a rotation shaft that penetrates the base in the thickness direction and rotates integrally with the second gear and the third gear.

5. 2. The media processing device according to claim 1, wherein the switching mechanism is positioned closer to the center in the main scanning direction than the movable wall, blocks the first passage, and has a guide wall that guides the guided portion located in the first passage to the second passage.

6. the binding processing section includes a first binding processing section and a second binding processing section that are disposed at positions spaced apart from each other in the main scanning direction and are moved independently of each other by the movement mechanism, 2. The media processing device according to claim 1, characterized in that, when the first binding processing section is moved to the end of the main scanning direction by the moving mechanism, the end section of the first binding processing section in the parallel binding position that is closer to the center in the main scanning direction than when in the diagonal binding position.

7. The moving mechanism includes: the first binding processing portion, which is in the diagonal binding posture and is located on the end side of the movable wall in the main scanning direction, is moved toward the center in the main scanning direction to change its posture to the parallel binding posture; The media processing device according to claim 6, characterized in that the first binding processing section is moved to the end side of the main scanning direction before the guided section passes through the movable wall in the open position, and the first binding processing section is brought into the parallel binding position at the end side of the main scanning direction from the movable wall.

8. the first binding processing unit is a staple binding processing unit that staples the plurality of media supported on the tray with staples, The media processing device according to claim 6 , wherein the second binding processing section is a pressure binding processing section that binds the plurality of media supported on the tray by applying pressure and deformation thereto.

9. an image forming device for forming an image on the medium; An image forming system comprising: the medium processing device according to claim 1 , which crimps and binds a plurality of the media on which images have been formed by the image forming device.

Images