JP2017105569A - Binding device, sheet processing device, and image formation system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve cost reduction of a device and enhance the productivity in a case of performing binding processing to plural spots of a sheet bundle.SOLUTION: A binding device includes: first binding means such as a needle binding unit 30; second binding means such as a needleless binding unit 40; a drive source such as a drive motor 71 of moving the first binding means and the second binding means; and drive transmission means such as a movement mechanism 70. The first binding means and the second binding means are configured to be movable independently of each other. The drive transmission means is configured to transmit the driving force to the first binding means when the drive source is rotated in one direction, and to transmit the driving force to the second binding means when the drive source is rotated in the direction opposite to the one direction.SELECTED DRAWING: Figure 10

Description

  The present invention relates to a binding device, a sheet processing device, and an image forming system.

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

  For example, Patent Literature 1 describes a binding device that includes a stapler that is a first binding unit and a needleless binding mechanism that is a second binding unit. The stapler is connected to the stapleless binding mechanism by a joint, and the stapler and the stapleless binding mechanism are integrated. Further, the stapler and the stapleless binding mechanism are integrally configured to be movable in the direction along one end of the sheet bundle by a motor, and the binding process can be performed at an arbitrary position on one end of the sheet bundle. An integrated object of the stapler and the stapleless binding mechanism is moved by a motor to a binding processing position designated by the user. Then, the stapler or the needleless binding mechanism is driven, and the binding process is performed at the position where the sheet bundle is bound.

  In the binding device described in Patent Document 1, since the stapler and the needleless binding mechanism are moved by one motor as a driving source, a motor for moving the stapler, a motor for moving the needleless binding mechanism, Compared with the case where each is provided separately, the number of parts can be reduced, and the cost of the apparatus can be reduced.

  Further, in the binding device described in Patent Document 1, since the integrated body of the stapler and the stapleless binding mechanism is configured to be movable, for example, a needle is provided on one end side in the moving direction of the integrated body of the sheet bundle. It is also possible to perform binding processing and perform needleless binding on the other end side. However, in the binding device described in Patent Document 1, there is a problem in productivity when performing a staple binding process on a sheet bundle and performing stapleless binding at a location away from the location where the staple binding process is performed.

  In order to solve the above-described problems, the present invention provides a binding device including a first binding unit, a second binding unit, and a drive source that moves the first binding unit and the second binding unit. The first binding means and the second binding means are configured to be movable independently of each other, and when the drive source is rotated in one direction, a driving force is applied to the first binding means. And a drive transmission means configured to transmit a driving force to the second binding means when the drive source is rotated in a direction opposite to the one direction. Is.

  According to the present invention, the cost of the apparatus can be reduced, and the productivity in the case where the binding process is performed at a plurality of positions of the sheet bundle can be improved.

1 is a schematic configuration diagram showing a configuration of an image forming system according to an embodiment. FIG. 2 is a block diagram showing a main configuration of a control system of the image forming system. The perspective view which shows the binding apparatus mounted in the paper processing apparatus. The top view which shows the same binding apparatus. (A) (b) (c) is a top view for explaining a sheet alignment operation. The perspective view explaining the binding process of a binding unit with a needle | hook. The block diagram explaining the structure of the sheet | seat bundle after a binding process completion, and a staple. The perspective view explaining the binding process of a needleless binding unit. Sectional drawing explaining the mode before and behind the crimping | compression-bonding of the paper by the binding tool of a stapleless binding unit. The top view which shows schematic structure of the moving mechanism which moves a binding unit with a needle | hook and a binding unit with a needle | hook in a paper width direction. The side view which shows schematic structure of the 1st movement mechanism which reciprocates the binding unit with a needle | hook to a paper width direction. The side view which shows schematic structure of the 2nd moving mechanism which reciprocates the staple-less binding unit in the paper width direction. (A) is a figure explaining the movement of a binding unit with a needle | hook, (b) is a figure explaining the movement of a binding unit without a needle | hook. The figure explaining the reciprocating movement of a staple-less binding unit. The flowchart in the case of performing stapleless binding and stapled binding on a sheet bundle.

  Hereinafter, an embodiment of an image forming system to which the present invention is applied will be described. FIG. 1 is a schematic configuration diagram illustrating a configuration of an image forming system according to the present embodiment. In the drawings, the same or corresponding parts are denoted by the same reference numerals, and redundant description thereof will be omitted as appropriate. As shown in FIG. 1, the image forming system according to the present embodiment is configured by connecting an image forming apparatus 1 and a sheet processing apparatus 2 that is a sheet processing apparatus connected to a subsequent stage of the image forming apparatus. In this embodiment, an image forming system in which the image forming apparatus 1 and the paper processing apparatus 2 are combined will be described. However, the image forming apparatus with the built-in paper processing apparatus or a paper processing apparatus independent of the image forming apparatus is used. It can also be applied to

  The image forming apparatus 1 forms an image on one side or both sides of the paper P based on image data read by a scanner unit when the image forming apparatus 1 is a copying machine or image data input from an external device such as a personal computer. To do. In the present embodiment, the image forming apparatus 1 employs an electrophotographic system as an image forming system, but may employ any other system such as an ink jet system or a thermal transfer system.

  FIG. 2 is a block diagram illustrating an example of a main configuration of a control system of the image forming system according to the present embodiment. As shown in FIG. 2, the image forming apparatus 1 includes a control unit 10 that is configured by a CPU, a ROM, a RAM, and the like and controls each unit in the image forming apparatus 1, and a communication unit 11 that communicates with the sheet processing apparatus 2. ing. The image forming apparatus 1 also includes a display operation unit 12 as a display operation unit that allows a user to perform document operations by key input or touch input.

  The sheet processing apparatus 2 includes a sheet aligning unit 21 that is a stacking unit, a needle-bound binding unit 30 that is a first binding unit, and a needle-less binding unit 40 that is a second binding unit. In addition, the sheet processing apparatus 2 includes a binding process control unit 20 as a binding process control unit that controls the sheet aligning unit 21, the binding unit 30 with a needle, the binding unit 40 without a needle, and the communication for communicating with the image forming apparatus 1. Part 25 and the like.

  FIG. 3 is a perspective view showing the binding device 100 mounted on the paper processing apparatus. FIG. 4 is a top view showing the binding device 100. As shown in FIGS. 3 and 4, the sheet aligning unit 21 of the binding apparatus 100 is an apparatus that superimposes and aligns the sheets P output from the image forming apparatus 1 to form a sheet bundle PB. Alignment stoppers 23a and 23b, jogger fences 24a and 24b, and the like are provided. The transport roller 22 is a roller for transporting the paper P sent from the image forming apparatus 1 to the paper aligning unit 21 and transporting the paper bundle PB after the binding process to the paper discharge unit. The rear end alignment stoppers 23a and 23b serve as a reference surface that abuts and aligns the rear end of the sheet P conveyed from the image forming apparatus 1. The jogger fences 24 a and 24 b are alignment plates that align the width direction of the paper P conveyed from the image forming apparatus 1.

  A binding unit 30 with a needle, which is a first binding means, is a device that staples a bundle of sheets PB using a staple needle (metal needle) 31, and includes a binding unit moving guide rail 32 with a needle, a binding unit home position sensor with a needle. 33 etc. are provided. The stapled binding unit movement guide rail 32 is a rail that guides the movement of the stapled binding unit 30 so that the stapled binding unit 30 can move stably over the entire region in the paper width direction. The stapled binding unit home position sensor 33 is disposed at one end of the stapled binding unit moving guide rail 32 and detects the position of the stapled binding unit 30. The needle-bound binding unit 30 uses the position detected by the needle-bound binding unit home position sensor 33 as the home position.

  The needleless binding unit 40, which is the second binding means, is a device that temporarily binds without using a metal needle by a pressure binding method or the like, and includes a needleless binding unit moving guide rail 42, a needleless binding unit home position sensor 43, and the like. It has. The stapleless binding unit movement guide rail 42 is a rail that guides the movement of the stapleless binding unit 40 so that the stapleless binding unit 40 can move stably in the paper width direction. The needleless binding unit home position sensor 43 is disposed on one end of the needleless binding unit moving guide rail 42 on the side opposite to the side on which the needled binding unit home position sensor 33 is disposed. 40 positions are detected. The needleless binding unit 40 uses the position detected by the needleless binding unit home position sensor 43 as a home position.

  5A, 5B, and 5C are top views for explaining the sheet alignment operation. As shown in FIG. 5A, the paper P transported from the image forming apparatus 1 is transported into the paper aligning unit 21 by the transport roller 22. Then, as shown in FIG. 5B, the transport direction of the paper P transported by the transport roller 22 is aligned by abutting the rear ends against the rear end alignment stoppers 23a and 23b. As shown in FIG. 5C, the paper P abutted against the rear end alignment stoppers 23a and 23b is aligned in the width direction orthogonal to the transport direction by driving the jogger fences 24a and 24b. The alignment of the bundle PB is completed.

  FIG. 6 is a perspective view illustrating the binding process of the binding unit with a needle. FIG. 7 is a configuration diagram illustrating the configuration of the sheet bundle and the staples after the binding process is completed. When the binding process by the staple unit 30 is selected, as shown in FIG. 6, the staple unit 30 moves from the home position to a predetermined position along the staple unit moving guide rail 32. Move in the direction of the arrow in the figure. When the stapled binding unit 30 is prepared at a predetermined position, the staple needle 31 is driven out to penetrate the sheet bundle PB, the protruding tip is bent, and the binding process is completed as shown in FIG.

  FIG. 8 is a perspective view illustrating the binding process of the stapleless binding unit. FIGS. 9A and 9B are cross-sectional views illustrating a state before and after the sheet is crimped by the binding tool of the needleless binding unit. As shown in FIG. 9A, the binding tool 41 of the needleless binding unit 40 includes a pair of upper and lower upper binding teeth 41a and lower binding teeth 41b having irregularities on the surface. When the binding process by the needleless binding unit 40 is selected, as shown in FIG. 8, the needleless binding unit 40 is moved from the home position to a predetermined position along the needleless binding unit moving guide rail 42. Move in the direction of the middle arrow. At this time, the binding tool 41 of the needleless binding unit 40 is in a state in which the upper binding teeth 41a and the lower binding teeth 41b are separated from each other as shown in FIG. When the stapleless binding unit 40 is prepared at a predetermined position, as shown in FIG. 9B, the binding tool 41 sandwiches the sheet bundle PB between the upper binding teeth 41a and the lower binding teeth 41b, and the sheet bundle By binding and deforming the PB, the fibers are entangled to form a binding tooth mark 44 that is a binding location, and a binding process is performed. As will be described later, the movement distance of the stapleless binding unit 40 is controlled by the control unit 10 and the binding processing control unit 20, and a plurality of binding tooth traces 44 can be formed at the corners of the sheet bundle PB. is there.

  Note that the binding tool of the needleless binding unit 40 is not limited to the binding tool 41 using the crimping binding method shown in FIG. For example, it is possible to adopt a cut and binding method in which a U-shaped cut and bend is applied to a bundle of sheets, a slit is simultaneously opened in the vicinity of the bending source, and the cut and bent leading end portion is not passed through the slit. Good.

  According to the binding process by the stapleless binding unit 40, when the paper bundle PB is discarded or when the paper is shredded, it is possible to save the trouble of removing the metal needle from the paper bundle. Excellent in properties.

  As shown in FIG. 4, the binding unit moving guide rail 32 with a needle is provided over the entire sheet width, and the binding unit 30 with a needle can move over the entire sheet width. On the other hand, the needleless binding unit moving guide rail 42 is about 1/3 of the paper width, and the needleless binding unit 40 can move about 1/3 of the paper width.

  FIG. 10 is a plan view showing a schematic configuration of a moving mechanism 70 that moves the binding unit 30 with a needle and the binding unit 40 with a needle in the paper width direction. FIG. 11 shows the binding unit 30 with a needle in the paper width direction. It is a side view which shows schematic structure of the 1st moving mechanism 50 to reciprocate. FIG. 12 is a side view illustrating a schematic configuration of a second moving mechanism 60 that reciprocates the needleless binding unit 40 in the paper width direction. 11 and 12 indicate the position of one end of the sheet aligning portion 21 in the sheet width direction, and the alternate long and short dash line A2 indicates the position of the other end of the sheet aligning portion 21 in the sheet width direction.

  The movement mechanism 70 includes a first movement mechanism 50 that reciprocates the binding unit 30 with a needle in the paper width direction, and a second movement mechanism 60 that reciprocates the binding unit 40 without a needle in the paper width direction.

  As shown in FIGS. 10 and 11, the first moving mechanism 50 includes a first one-way clutch 51 that meshes with a motor gear 72 fixed to a motor shaft 71 a of a drive motor 71 that is a drive source. When the first one-way clutch 51 rotates counterclockwise in the figure, it locks the first rotating shaft 53, transmits the driving force to the first rotating shaft 53, and rotates first in the figure when the first one-way clutch 51 rotates clockwise. It rotates idly with respect to the rotating shaft 53.

  A first drive pulley 52 a is attached to the first rotary shaft 53 so as to rotate integrally with the first rotary shaft 53. A first drive belt 54 is wound around the first drive pulley 52a and the first driven pulley 52b.

  A rod-shaped first fixing member 56 extending in the vertical direction (direction orthogonal to the paper surface) is fixed to the outer peripheral surface of the first drive belt 54. The needle-bound binding unit 30 is provided with an attachment hole 35 extending in a direction orthogonal to the belt surface of the first drive belt 54. By inserting the first fixing member 56 into the attachment hole 35, the binding unit 30 with a needle is attached to the first drive belt 54. Accordingly, the needle-bound binding unit 30 is moved in the paper width direction by the rotational drive of the first drive belt 54.

  Further, the diameter of the first drive pulley 52a and the diameter of the first driven pulley 52b are the same so that the binding unit 30 with needle moves in parallel in the paper width direction. Further, the first driven pulley 52b is provided in the vicinity of the other end in the sheet width direction of the sheet aligning portion 21 so that the binding unit with needle 30 can move over the entire sheet width.

  Further, as will be described later, the needle-bound binding unit 30 has the following configuration so that it can be reciprocated by one rotation of the first drive belt 54 without changing the posture or the position in the paper transport direction. ing. That is, the attachment hole 35 crosses the region spanned between the first drive pulley 52a and the first driven pulley 52b of the first drive belt 54, and from the outer peripheral surface of the first drive belt 54, the first fixing member It is provided in a shape that protrudes by the diameter. Specifically, if the length in the longitudinal direction of the mounting hole 35 is L1, the diameter of the first driven pulley 52b is D1, and the diameter of the first fixing member is d1, L1 = D1 + 2d1.

  As shown in FIGS. 10 and 12, the second moving mechanism 60 has a second one-way clutch 61 that meshes with the first one-way clutch 51. The second one-way clutch 61, like the first one-way clutch 51, locks the second rotating shaft 63 and transmits a driving force to the second rotating shaft 63 when rotating counterclockwise in the drawing, When rotating around, the second rotation shaft 63 is idled.

  A second drive pulley 62 a is attached to the second rotary shaft 63 so as to rotate integrally with the second rotary shaft 63. A second drive belt 64 is wound around the second drive pulley 62a and the first idler pulley 62b. A second idler pulley 67a is attached to the idler shaft 65 to which the first idler pulley 62b is attached. A driven belt 66 is wound around the second idler pulley 67a and the second driven pulley 67b.

  A rod-like second fixing member 68 extending in the up-down direction (direction orthogonal to the paper surface) is fixed to the outer peripheral surface of the driven belt 66. The needleless binding unit 40 is provided with an attachment hole 45 extending in a direction perpendicular to the belt surface of the driven belt 66. By inserting the second fixing member 68 into the attachment hole 45, there is no needle. The binding unit 40 is attached to the driven belt 66.

  The second moving mechanism 60 is configured to provide an idler mechanism so that the needleless binding unit 40 can move about 1/3 of the paper width and transmit drive using two belts. That is, as shown in FIG. 12, the idler mechanism including the idler shaft 65, the first idler pulley 62b, and the second idler pulley is moved from the other end A2 in the sheet width direction of the sheet aligning unit 21 in the sheet width direction. It is provided at a position about (1/3) away from the width W of 21.

  Further, the diameter of the second idler pulley 67a and the diameter of the second driven pulley 67b are made equal so that the needleless binding unit 40 moves in parallel with the width direction. Further, as will be described later, the needleless binding unit 30 has the following configuration so that it can reciprocate without changing the posture or the position in the paper transport direction by one rotation of the driven belt 66. . That is, when the length L2 in the longitudinal direction of the mounting hole 45, the diameter of the second driven pulley 67b is D2, and the diameter of the second fixing member 68 is d2, L2 = D2 + 2d2. The mounting hole 45 crosses the region spanned between the second idler pulley 67a and the second driven pulley 67b of the driven belt 66, and protrudes from the outer peripheral surface of the driven belt 66 by the diameter of the second fixing member 68. It is provided in such a form.

FIG. 13A is a diagram for explaining the movement of the binding unit 30 with a needle, and FIG. 13B is a diagram for explaining the movement of the binding unit 40 without a needle.
As shown in FIG. 13A, when the binding unit 30 with a needle is moved, the drive motor 71 is rotated clockwise in the drawing. At this time, the first one-way clutch 51 that meshes with the motor gear 72 rotates counterclockwise in the drawing. As described above, when the first one-way clutch 51 rotates counterclockwise in the drawing, the first rotation shaft 53 is locked and the driving force is transmitted to the first rotation shaft 53. As a result, the first drive pulley 52a attached to the first rotating shaft 53 is driven to rotate counterclockwise in the drawing, and the first drive belt 54 is driven to rotate counterclockwise.

  When the first drive belt 54 is driven to rotate, the first fixing member 56 fixed to the first drive belt 54 moves. The first fixing member 56 is fixed to a lower bridging area in the drawing in the bridging area between the first driving pulley 52a and the first driven pulley 52b of the first driving belt 54. Accordingly, when the first drive belt 54 is driven to rotate counterclockwise in the figure, the first fixing member 56 moves to the needleless binding unit 40 side (right side in the figure). When the first fixing member 56 moves to the needleless binding unit 40 side, the needled binding unit 30 attached to the first fixing member 56 moves to the needleless binding unit 40 side.

Further, the driving force is transmitted from the first one-way clutch 51 to the second one-way clutch 61, and the second one-way clutch 61 is driven to rotate clockwise in the drawing, causing the second rotating shaft 63 to idle. Thereby, about the 2nd moving mechanism 60, a driving force is not transmitted to a drive transmission direction downstream rather than a 2nd one-way clutch. As a result, the needleless binding unit 40 does not move.
Thus, when the drive motor 71 is rotated clockwise in the figure, the needleless binding unit 40 does not move, and only the needled binding unit 30 moves.

  When the stapleless binding unit 40 is moved, the drive motor 71 is rotationally driven counterclockwise in the drawing as shown in FIG. At this time, since the first one-way clutch 51 rotates clockwise in the drawing, the first one-way clutch 51 rotates idly with respect to the first rotation shaft 53. As a result, the driving force is not transmitted to the first moving mechanism 50 downstream of the first one-way clutch 51 in the driving transmission direction. As a result, the binding unit 30 with a needle does not move.

  On the other hand, the second one-way clutch 61 that meshes with the first one-way clutch 51 rotates counterclockwise in the drawing, locks the second rotating shaft 63, and the driving force is transmitted to the second rotating shaft 63. As a result, the driving force is transmitted to the second drive belt 64, the first idler pulley 62b, the idler shaft 65, and the second idler pulley 67a, and the driven belt 66 is driven to rotate counterclockwise in the drawing.

The second fixing member 68 is fixed to the upper bridging region in the drawing in the bridging region between the second idler pulley 67a and the second driven pulley 67b of the driven belt 66. Accordingly, when the driven belt 66 is driven to rotate counterclockwise in the figure, the second fixing member 68 moves to the binding unit with needle 30 side (left side in the figure). By moving the second fixing member 68 toward the binding unit 30 with a needle, the binding unit 40 without a needle attached to the second fixing member 68 moves toward the binding unit 30 with a needle.
Thus, when the drive motor 71 is rotated counterclockwise in the drawing, the binding unit 30 with a needle does not move, and only the binding unit 40 without a needle moves.

  Further, the binding unit 30 with a needle and the binding unit 40 without a needle can be reciprocated in the width direction by changing the belt in one direction without changing the posture or the position in the paper transport direction. Since the mechanism for reciprocating the needle-bound binding unit 30 in the width direction and the mechanism for reciprocating the needle-less binding unit 40 have the same configuration, in the following, as a representative, explain.

FIG. 14 is a diagram illustrating the reciprocating movement of the needleless binding unit 40.
As described above, the second idler pulley 67a and the second driven pulley 67b have the same diameter. When the length L2 in the longitudinal direction of the mounting hole 45, the diameter of the second driven pulley 67b is D2, and the diameter of the second fixing member 68 is d2, L2 = D2 + 2d2. The mounting hole 45 crosses the region spanned between the second idler pulley 67a and the second driven pulley 67b of the driven belt 66, and protrudes from the outer peripheral surface of the driven belt 66 by the diameter of the second fixing member 68. It is provided in such a form.

  As shown in FIG. 14A, when the driven belt 66 rotates counterclockwise in the figure, the needleless binding unit 40 is pushed to the left in the figure by the second fixing member 68, and the needleless binding unit 40 is Move to the left in the figure.

  As shown in FIG. 14 (b), when the second fixing member 68 reaches the area around the second idler pulley 67a of the driven belt 66, the second fixing member 68 directs the mounting hole 45 downward. Move.

  As shown in FIG. 14C, when the second fixing member 68 reaches the lower end in the drawing of the area around the second idler pulley 67a of the driven belt 66, the second fixing member 68 is attached to the mounting hole 45. The position of the lower end in the figure is reached.

  As described above, when the second fixing member 68 moves in the region around the second idler pulley 67 a of the driven belt 66, the second fixing member 68 moves in the mounting hole 45. Therefore, the stapleless binding unit 40 stays at the left end in the figure without changing its posture or moving in the paper transport direction.

  Then, as shown in FIG. 14D, when the second fixing member 68 moves to the bridging area between the second idler pulley 67a and the second driven pulley 67b on the lower side of the driven belt 66 in the drawing, The fixing member 68 pushes the stapleless binding unit 40 to the right side in the figure. As a result, the stapleless binding unit moves to the right side in the figure.

  As a result, the needleless binding unit 40 can reciprocate in the left-right direction in the figure without changing the posture or the position in the paper transport direction.

  In the present embodiment, the needle-bound binding unit 30 and the needle-less binding unit 40 can be reciprocated in the paper width direction by a single drive motor 71. As a result, the drive motor for reciprocating the binding unit 30 with needle in the paper width direction and the drive motor for reciprocating the needleless binding unit 40 in the paper width direction can be compared with those provided separately. The score can be reduced. As a result, the cost of the apparatus can be reduced. Further, as compared with the apparatus in which the drive motor for reciprocating the binding unit with needle 30 in the paper width direction and the drive motor for reciprocating the needleless binding unit 40 in the paper width direction are provided separately. Miniaturization can be achieved.

  In the present embodiment, the needle-bound binding unit 30 and the needle-less binding unit 40 are driven separately, so that the needle-bound binding unit 30 and the needle-less binding unit 40 are driven as a single unit. Driving load can be reduced. Thereby, the electric power supplied to the drive motor 71 can be suppressed, and energy saving can be achieved.

  Further, in the present embodiment, the productivity in the case where the stapleless binding and the stapled binding are performed on the sheet bundle is increased as compared with the case where the stapled binding unit 30 and the stapleless binding unit 40 are driven integrally. be able to.

FIG. 15 is a flowchart in the case of performing stapleless binding and stapled binding on a sheet bundle.
First, as shown in FIG. 13A, the binding processing control unit 20 rotates the drive motor 71 clockwise (hereinafter referred to as forward rotation) in the figure to move the binding unit 30 with the needle (S1). ). Then, when the binding unit 30 with a needle reaches the position of the paper bundle PB to be stapled (Yes in S2), the binding unit 30 with a needle is driven to start the needle binding process (S3-1). At the same time, as shown in FIG. 13B, the drive motor 71 is rotated counterclockwise in the drawing (hereinafter referred to as reverse rotation) to start the movement of the needleless binding unit 40 (S3- 3).

  When the needleless binding unit 40 reaches the position where the stapleless binding is performed on the sheet bundle PB (Yes in S4), the needleless binding unit 30 is driven to start the needleless binding. (S5-2). When the needle-bound binding unit of the needle-bound binding unit is finished (S5-2) and the needleless binding unit 40 has reached the position where the needleless binding is performed (Yes in S4), the drive motor 71 is rotated forward. Then, the binding unit 30 with the needle is moved to the home position (S5-1).

  Next, when the needleless binding by the needleless binding unit 30 is completed (S5-3) and the needled binding unit 30 has reached the home position (Yes in S6), the drive motor 71 is rotated in reverse, The needleless binding unit 40 is moved to the home position.

  Thus, in this embodiment, since the binding unit 30 with a needle | hook and the binding unit 40 without a needle | hook are each driven separately, when the binding process is performed with one binding unit, the other binding unit Can be moved. Thus, during one binding process, the movement of the other binding unit can be completed and the other binding process can be started, and productivity can be improved.

  In this embodiment, one binding unit is a needleless binding unit and the other binding unit is a needled binding unit, but both may be a needled binding unit and both may be a needleless binding unit.

  By making both the same binding units, productivity in the case of performing the same binding process at a plurality of locations can be improved.

What was demonstrated above is an example, and there exists an effect peculiar for every following aspect.
(Aspect 1)
A driving source such as a driving motor 71 that moves the first binding means such as the binding unit 30 with a needle, the second binding means such as the binding unit 40 without a needle, and the first binding means and the second binding means. The first binding means and the second binding means are configured to be movable independently of each other, and when the drive source is rotated in one direction, A moving mechanism 70 configured to transmit a driving force to the first binding means and to transmit the driving force to the second binding means when the driving source is rotated in a direction opposite to the one direction. Drive transmission means.

  The binding device described in Patent Document 1 has a configuration in which first binding means such as a stapler and second binding means such as a needleless binding mechanism are integrally moved. Accordingly, when the binding process is performed by the second binding unit at a position apart from the first binding position where the first binding unit performs the binding process on the sheet bundle, the following operation is performed. That is, after the binding process by the first binding unit is completed at the first binding position of the sheet bundle, the first binding unit is opposed to the second binding position where the binding process is performed by the first binding unit of the sheet bundle. An integral object of the binding means and the second binding means is moved. And it is operation | movement of performing a binding process to a 2nd binding position by a 2nd binding means. As described above, in the binding device described in Patent Document 1, after the binding process is completed, the second process is performed after the binding process is performed at the first position in order to move to a position where the next binding process is performed. It takes time until the binding process is performed on the position, and the productivity is poor.

  On the other hand, in (Aspect 1), when the driving source is rotated in one direction, the driving force is transmitted to the first binding means, and only the first binding means is moved, and the driving source is moved to the one direction. When is rotated in the opposite direction, the driving force is transmitted to the second binding means, and only the second binding means moves. Therefore, in the case where the binding process is performed by the second binding unit at a position away from the first binding position where the first binding unit performs the binding process on the sheet bundle, the driving is performed during the binding process by the first binding unit. By rotating the source in the direction opposite to the one direction, the second binding means can be moved to a place where the second binding means performs the binding process. Accordingly, it is possible to shorten the time from the completion of the binding process by the first binding unit to the start of the binding process by the second binding unit as compared with the case of moving the second binding unit. Therefore, productivity can be improved compared with the binding apparatus described in Patent Document 1.

  Further, since the first binding means and the second binding means are driven by one drive source, compared to the case where the first binding means and the second binding means are driven by separate drive sources. The number of drive sources can be reduced, and the cost of the apparatus can be reduced.

(Aspect 2)
In (Aspect 1), the drive transmission means such as the moving mechanism 70 has a one-way clutch such as the first one-way clutch 51 that rotates idly when a drive source such as the drive motor 71 is rotated in a direction opposite to one direction. The first drive transmission mechanism such as the first moving mechanism 50 that transmits the driving force to the first binding means such as the binding unit 30 with the needle and the first drive transmission mechanism that idles when the drive source is rotated in one direction. It has a one-way clutch such as a two-one-way clutch 61 and a second drive transmission mechanism such as a second movement mechanism that transmits a driving force to second binding means such as a needleless binding unit 40.

  According to this, as described in the embodiment, when the drive source such as the drive motor 71 is rotated in one direction, the second one-way clutch 61 of the second drive transmission means such as the second moving mechanism 60 is used. The first one-way clutch 51 idles and the first one-way clutch 51 of the first drive transmission means such as the first moving mechanism 50 is connected to transmit the driving force, and the first binding means such as the binding unit 30 with the needle moves. Further, when the drive source is rotated in the opposite direction to the one direction, the one-way clutch of the first drive transmission means is idled, and the one-way clutch of the second drive transmission means is connected to transmit the driving force, The binding means moves. Thus, when the driving source is rotated in one direction, the driving force can be transmitted to the first binding means, and when the driving source is rotated in the opposite direction to the one direction, the second binding is performed. A driving force can be transmitted to the means.

(Aspect 3)
In (Aspect 1) or (Aspect 2), one of the first binding means and the second binding means is needleless binding, and the other is needled binding.
According to this, both binding with a needle and binding without a needle can be applied to a sheet bundle. Further, binding without a needle or binding with a needle can be applied to a sheet bundle. As a result, when temporary binding is desired, stapleless binding can be selected, and when staple binding is desired, stapled binding can be selected, and binding processing can be performed according to user needs.

(Aspect 4)
In (Aspect 1) or (Aspect 2), the first binding means and the second binding means are binding with a needle.
According to this, it is possible to increase the productivity in the case of performing staple binding at a plurality of positions of the sheet bundle as compared with the case of performing the staple with a single staple unit.

(Aspect 5)
In (Aspect 1) or (Aspect 2), the first binding means and the second binding means are needleless binding.
According to this, the productivity when performing stapleless binding at a plurality of locations in the sheet bundle can be increased as compared with the case of performing with a single stapleless binding unit.

(Aspect 6)
In a sheet processing apparatus such as the sheet processing apparatus 2 including at least a binding unit that performs a binding process on a sheet bundle such as a sheet bundle, the binding device 100 according to any one of (Aspect 1) to (Aspect 5) is used as the binding unit. Using.
According to this, it is possible to reduce the cost of the apparatus, and it is possible to increase the productivity when the binding process is performed on the sheet bundle at a plurality of places.

(Aspect 7)
In an image forming system including an image forming apparatus 1 that forms an image on a sheet such as a sheet, and a binding processing apparatus that performs a binding process on a bundle of sheets on which an image is formed by the image forming apparatus 1. As the apparatus, the binding apparatus 100 of any one of (Aspect 1) to (Aspect 5) was used.
According to this, it is possible to increase the productivity when the binding process is performed on the sheet bundle at a plurality of places.

1: Image forming apparatus 2: Paper processing apparatus 30: Stitching unit with needle 40: Stitching unit without needle 50: First moving mechanism 51: First one-way clutch 52a: First driving pulley 52b: First driven pulley 53: First Rotating shaft 54: First driving belt 56: First fixing member 60: Second moving mechanism 61: Second one-way clutch 62a: Second driving pulley 62b: First idler pulley 63: Second rotating shaft 64: Second driving belt 65: idler shaft 66: driven belt 67a: second idler pulley 67b: second driven pulley 68: second fixed member 70: moving mechanism 71: drive motor 71a: motor shaft 72: motor gear 100: binding device PB: sheet bundle

JP 2012-25499 A

Claims (7)

First binding means;
A second binding means;
In a binding device comprising a drive source for moving the first binding means and the second binding means,
The first binding means and the second binding means are configured to be movable independently of each other,
When the driving source is rotated in one direction, a driving force is transmitted to the first binding means, and when the driving source is rotated in a direction opposite to the one direction, the second binding means A binding device comprising drive transmission means configured to transmit a driving force. The binding device according to claim 1,
The drive transmission means includes a one-way clutch that idles when the drive source is rotated in a direction opposite to the one direction, and a first drive transmission mechanism that transmits a driving force to the front first binding means. And a second drive transmission mechanism that has a one-way clutch that idles when the drive source is rotated in the one direction, and that transmits a drive force to the second binding means. Binding device. The binding device according to claim 1 or 2,
One of the first binding means and the second binding means is a needleless binding, and the other is a needled binding. The binding device according to claim 1 or 2,
The binding device according to claim 1, wherein the first binding means and the second binding means are stapled bindings. The binding device according to claim 1 or 2,
The binding device, wherein the first binding means and the second binding means are needleless binding. In a sheet processing apparatus including at least a binding unit that performs a binding process on a sheet bundle,
A sheet processing apparatus using the binding apparatus according to claim 1 as the binding means. An image forming apparatus for forming an image on a sheet;
An image forming system including a binding processing device that performs a binding process on a bundle of sheets on which images are formed by the image forming device.
An image forming system using the binding device according to claim 1 as the binding processing device.

Images