JP2018202515A - Bookbinding system, bookbinding device, cutting device and method for controlling the same - Google Patents

Abstract

To solve such the problem that, when cutting a peripheral edge of a sheet bundle by rotating the sheet bundle, positional deviation, wrinkles, distortion and damages occur due to rotation of the sheet bundle.SOLUTION: A bookbinding system rotates a sheet bundle while holding the sheet bundle with pressure contact members 10a, 10b for holding a sheet bundle with a relatively large pressure contact area, thereby reliably rotating the sheet bundle and suppressing damage at a surface of the sheet bundle during rotation.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a bookbinding system, a bookbinding apparatus, a cutting apparatus, and a control method thereof.

  As a cutting device that cuts a sheet bundle, a device that cuts one direction (small edge portion) or three directions (top portion, ground portion, small edge portion) of a bound sheet bundle is known. Conventionally, for example, in an apparatus that cuts three directions (one direction or more) of a sheet bundle, a pair of rotating members that sandwich the front cover surface and the back cover surface of the sheet bundle are rotated by a driving unit such as a motor, and the sheet that is the cutting portion Each peripheral edge of the bundle is sequentially positioned on a cutting blade such as a cutter and cut.

  In such a cutting device, when rotating a sheet bundle, the sheet characteristics (mechanical strength) such as the size, thickness, basis weight, material, waist strength, friction coefficient of the cover sheet (sheet contacting the rotating member) The sheet bundle is rotated according to the characteristics. Patent Document 1 describes a technique of rotating at a low speed in the case of a sheet bundle that is susceptible to damage (position shift, wrinkle, distortion, etc.) and rotating at a high speed in the case of a sheet bundle that is not easily damaged.

  Patent Document 2 has a plurality of average rotation speeds or maximum rotation speeds of sheet bundles, and selects a speed at which the moment of inertia acting on the sheet bundles when the sheet bundles rotate does not damage the sheet bundles. A technique for setting the rotation speed is described.

Japanese Patent Laying-Open No. 2015-150644 JP2015-150646A

  In the above-described cutting apparatus, the sheet bundle is rotated, a predetermined edge of the sheet bundle is positioned and cut at a cutting position, and then the sheet bundle is rotated and cut to the next edge (cutting position). In this way, when the sheet bundle is rotated to cut each peripheral edge of the sheet bundle, misalignment, wrinkles, distortion, and the like due to the rotation of the sheet bundle become problems. That is, if the sheet bundle is rotated in a state where the surface is strongly pressed to sandwich the sheet bundle, the cover sheet is wrinkled or the entire sheet bundle is distorted. Also, if the sheet bundle is rotated with the sheet bundle being pressed and held with a weak force, the position of the sheet bundle is shifted when the edge of the sheet bundle is positioned at the cutting position, and the cut surface of the sheet bundle becomes uneven. There are challenges.

  An object of the present invention is to solve the above-described problems of the prior art.

  An object of the present invention is to provide a technique capable of suppressing damage to a sheet bundle when the position of the sheet bundle is changed.

In order to achieve the above object, a cutting apparatus according to one aspect of the present invention has the following configuration. That is,
A cutting means for cutting a sheet bundle at a cutting position;
First clamping means capable of clamping the sheet bundle;
Second clamping means capable of clamping the sheet bundle at a position different from the first clamping means;
And changing means for changing the position of the sheet bundle with respect to the cutting position while being held by the first and second holding means.

  According to the present invention, it is possible to suppress damage to the sheet bundle when the position of the sheet bundle is changed.

  Other features and advantages of the present invention will become apparent from the following description with reference to the accompanying drawings. In the accompanying drawings, the same or similar components are denoted by the same reference numerals.

The accompanying drawings are included in the specification, constitute a part thereof, show an embodiment of the present invention, and are used together with the description to explain the principle of the present invention.
1 is a structural cross-sectional view illustrating a configuration of a bookbinding system according to an embodiment. The figure explaining the principal part mechanism of the sheet | seat bundle cutting apparatus which concerns on embodiment (A), The figure explaining the difference of the press-contact area of each of a 1st holding member and a 2nd holding member, and a sheet bundle. FIG. 4 is a diagram for explaining sandwiching and rotation of a sheet bundle by sheet holding units 10 and 11. 1 is a functional block diagram illustrating a functional configuration of a bookbinding system including a bookbinding apparatus, a sheet bundle cutting apparatus, and an image forming apparatus according to an embodiment. 6 is a flowchart for explaining processing executed by the CPU of the bookbinding system according to the embodiment.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The following embodiments do not limit the present invention according to the claims, and all combinations of features described in the embodiments are not necessarily essential to the solution means of the present invention. .

  FIG. 1 is a structural cross-sectional view illustrating a configuration of a bookbinding system according to an embodiment.

  First, the bookbinding system includes a bookbinding apparatus 100, a sheet bundle cutting apparatus 101, and an image forming apparatus 102 that forms (prints) an image on a sheet.

  First, the configuration of the bookbinding apparatus 100 will be described. The bookbinding apparatus 100 includes a stacking unit 40 that stacks and aligns printing sheets in a bundle in the casing 30, an adhesive application unit 43 that applies adhesive paste to the sheet bundle aligned in the stacking unit 40, A cover binding portion 45 that binds the cover sheet to the sheet bundle to which the adhesive is applied is included.

  The casing 30 is provided with a carry-in path 31 having a carry-in port 26 connected to the paper discharge port of the image forming apparatus 102, and the intermediate-paper carrying path 32 and the cover-sheet carrying path 34 are connected via the switching flapper 36 from the carry-in path 31. Has been. A bookbinding path 33 is connected to the intermediate paper transport path 32 via the stacking unit 40. The bookbinding path 33 is arranged in a direction that cuts the apparatus in a substantially vertical direction, and the cover sheet conveyance path 34 is arranged in a direction that crosses the apparatus in a substantially horizontal direction. The bookbinding path 33 and the cover transport path 34 intersect (orthogonal) with each other, and a cover binding portion 45 is disposed at the intersection.

  The carry-in path 31 configured as described above is connected to the paper discharge port of the image forming apparatus 102 and receives a printed sheet from the image forming apparatus 102. In this case, the image forming apparatus 102 carries in a sheet printed based on the content information (saddle stitching sheet) and a sheet printed with a title used as a cover cover (hereinafter referred to as a cover sheet). The carry-in path 31 branches into a middle-sheet conveyance path 32 and a cover-sheet conveyance path 34, and the printed sheets are distributed and conveyed to the respective paths via the switching flapper 36.

  On the other hand, an inserter device 27 is connected to the carry-in path 31, and cover sheets that are not printed by the image forming apparatus 102 can be separated one by one from the paper feed tray 27 a and supplied to the carry-in path 31. The inserter device 27 includes a single-stage or a plurality of stages of paper feed trays 27a, and a paper feed unit that separates and feeds stacked sheets one by one is provided at the tip of the tray 27a. A paper feed path 28 is provided on the downstream side of the paper feed unit, and the paper feed path 28 is connected to a carry-in path 31 via a path switching piece 29.

  Further, a transport roller 31 a is disposed in the carry-in path 31, a transport roller 32 a is disposed in the intermediate paper transport path 32, and a grip transport unit 41, a sheet bundle cutting device 101, and a paper discharge roller 48 are disposed in the bookbinding path 33. Further, a transport roller 34a is disposed in the cover transport path 34, and each of these transport rollers is connected to a drive motor.

  The stacking tray 42 disposed at the paper discharge port of the intermediate paper conveyance path 32 stacks and stores sheets from the paper discharge port in a bundle. As shown in FIG. 1, the stacking tray 42 has a tray arranged in a substantially horizontal posture, and a forward / reverse rotation roller 42a and a carry-in guide 42b are provided above the tray. Then, the print sheet from the discharge port of the intermediate paper transport path 32 is guided to the stacking tray 42 by the carry-in guide 42b and stored by the rotation of the forward / reverse rotation roller 42a. This forward / reverse roller 42a transfers the sheet to the front end side of the stacking tray 42 by forward rotation, and pushes the rear end of the sheet against a regulating member (not shown) disposed at the rear end of the tray (right end in FIG. 1) by reverse rotation. Regulate reliance. Further, the stacking tray 42 is provided with a sheet side aligning section (not shown), and the side edges of the sheets stored in the stacking tray 42 are aligned to the reference position. With such a configuration, the sheets from the intermediate paper conveyance path 32 are sequentially stacked on the stacking tray 42 and are aligned in a bundle.

  In the bookbinding path 33, a grip transport unit 41 that transports the sheet from the stacking tray 42 to the adhesive application position 103 on the downstream side is disposed. As shown in FIG. 1, the grip transport unit 41 deflects the sheet bundle stacked on the stacking tray 42 from a horizontal posture to a vertical posture, and the sheet bundle is adhesive along a bookbinding path 33 arranged in a substantially vertical direction. It is conveyed to the application position 103 and set. For this reason, the stacking tray 42 is moved from the stacking position (solid line in FIG. 1) to the transfer position (broken line in FIG. 1), and the sheet bundle is transferred to the grip transport unit 41 prepared at the transfer position.

  An adhesive application portion 43 is disposed at the adhesive application position 103 in the bookbinding path 33. As shown in FIG. 1, the adhesive application unit 43 includes a glue container 43a for storing a hot-melt adhesive, an application roll 43b, and a roll motor (not shown).

  A cover binding unit 45 is disposed at the cover binding position of the bookbinding path 33. As shown in FIG. 1, the cover binding portion 45 includes a back plate 46 a, a back folding plate 46 b, and a folding roll 47. At the cover binding position, the above cover transport path 34 is arranged, and the cover sheet is fed from the image forming apparatus 102 or the inserter apparatus 27. The back plate 46b has a plate-like member that backs up the cover sheet, and is disposed in the bookbinding path 33 so as to be freely advanced and retracted. A (medium paper) sheet bundle is joined in an inverted T shape to the cover sheet supported by the back plate 46b. Therefore, the back folding plate 46b has a pair of left and right press members, and is configured to be moved toward and away from each other by a driving means (not shown) in order to back fold the back portion of the cover sheet joined in an inverted T shape. ing. Further, the folding roll 47 has a pair of rollers for clamping and finishing the back-folded sheet bundle.

  The sheet bundle thus bound is sent to the unit frame 15 of the sheet bundle cutting apparatus 101, and the cutting edge of the sheet bundle is positioned at the cutting position Cp (FIG. 2) of the cutting function.

  A sheet discharge path 33a for guiding the sheet bundle from the unit frame 15 toward the storage stacker 50 is disposed, and a sheet discharge roller 48 is disposed in the sheet discharge path 33a. The paper discharge roller 48 has a pair of rollers and nips the sheet bundle and guides it to the storage stacker 50. The storage stacker 50 is arranged in a drawer shape on the casing 30 as shown in FIG. 1, and is configured to be able to be drawn out to the front side of the apparatus (front side of FIG. 1). Can be visually recognized. A waste storage box 51 is provided in parallel with the storage stacker 50, and the waste storage box 51 stores a piece of paper cut by the cutting blade 22.

  Next, a main part mechanism of the sheet bundle cutting apparatus 101 will be described.

  FIG. 2A is a diagram for explaining a main part mechanism of the sheet bundle cutting apparatus 101 according to the embodiment. FIG. 2B is a difference in pressure contact area between the sheet holding units 10 and 11 and the sheet bundle. FIG. Note that reference numeral 201 in FIG. 2B denotes a groove portion for moving the sheet holding portion 11 in the vertical direction in FIG.

  The sheet bundle cutting apparatus 101 has a sheet holding part 10 for holding and rotating the sheet bundle 200 from the front and back for holding and rotating the sheet bundle 200, and has a smaller area in pressure contact than the sheet holding part 10, The sheet holding unit 11 holds the bundle from the front and back. Furthermore, a drive unit (motor or the like) that rotates the sheet holding unit in a predetermined direction, a cutting edge press unit 17 (pressure mechanism) that holds the sheet bundle 200 at the cutting position Cp, and a sheet bundle are arranged at the cutting position Cp. A cutting mechanism for cutting 200 is provided. Furthermore, feeder units 25a and 25b (FIG. 2A) are provided for moving the sheet holding unit 11 to transfer the sheet bundle 200 to the cutting position Cp.

  The sheet holding unit 10 includes pressure contact members 10 a and 10 b, and both members are rotatably supported by a unit frame 15. The pressing member 10a is supported so as to be movable in the direction in which the sheet bundle is clamped (the clamping direction), and the rotation of the pressing motor Mg can clamp the sheet bundle 200 with the pressing member 10b or release the clamping. . Further, the sheet holding unit 10 can lower or raise the sandwiched sheet bundle 200 to the cutting position Cp, and position the cutting edge of the sheet bundle 200 at the cutting position Cp. However, in the present embodiment, the sheet bundle 200 is lowered to the cutting position Cp and raised from the cutting position Cp by moving the sheet holding unit 11 holding the sheet bundle 200.

  Further, when the sheet bundle 200 is rotated with the sheet bundle 200 being held only by the sheet holding unit 11, the cover sheet (front cover sheet, back cover sheet) in contact with the pressure contact member is likely to be wrinkled and distorted. Therefore, the rotation of the sheet bundle 200 is performed at least by holding the sheet bundle 200 by the sheet holding unit 10.

  Similar to the sheet holding unit 10, the sheet holding unit 11 includes press contact members 11 a and 11 b, and both members are rotatably supported by the unit frame 15. Further, the whole sheet bundle 200 can be clamped by being connected to the sheet holding unit 10, but it is also possible to release the clamping of only the sheet holding unit 10 and clamp the sheet bundle 200 only by the sheet holding unit 11. .

  There is no difference in the function of holding and rotating the sheet bundle 200 between the sheet holding unit 10 and the sheet holding unit 11. However, since the sheet holding unit 10 has a large surface for pressing and sandwiching the sheet bundle 200, it is possible to suppress the positional deviation of the sheet bundle 200 when the sheet bundle 200 rotates. In addition to holding and rotating the sheet bundle 200, the sheet holding unit 11 has a function of moving up and down in the vertical direction in FIG.

  The sheet holding unit 10 can also be connected to the sheet holding unit 11 to sandwich and rotate the sheet bundle 200. Since the sheet holding unit 11 needs to have a size that does not interfere with the cutting edge 22 when cutting the periphery of the sheet bundle 200, the area of the surface in contact with the sheet bundle 200 cannot be increased. However, as the area of the surface of the sheet holding unit 11 that comes into contact with the sheet bundle 200 is smaller, a larger pressing force is required to sandwich the sheet bundle 200.

  FIG. 3 is a diagram for explaining the holding and rotation of the sheet bundle 200 by the sheet holding units 10 and 11.

  FIG. 3A shows the case of the sheet holding portion 10, and in this case, since the distance from the outer diameter of the pressure contact members 10 a and 10 b to the outer diameter of the sheet bundle 200 is short, the moment of inertia is small. On the other hand, FIG. 3B shows the case of the sheet holding portion 11, and since the distance from the outer diameter of the pressure contact members 11 a and 11 b to the outer diameter of the sheet bundle 200 is long, the moment of inertia increases. For this reason, the sheet holding unit 11 is connected to the sheet holding unit 10 to reduce the influence of the moment of inertia when the sheet bundle 200 is rotated. When the sheet bundle 200 is moved to the cutting position Cp and the peripheral edge of the sheet bundle 200 is cut by the cutting blade 22, the connection with the sheet holding unit 10 is released so as not to obstruct the cutting by the cutting blade 22. The sheet bundle 200 is moved only by the sheet holding unit 11.

  A first motor Mt1 is connected to the pressure contact member 11a, and a second motor Mt2 is connected to the pressure contact member 11b. Both motors rotate the pressure contact members 11a and 11b at the same rotational speed. The unit frame 15 is configured to be able to move the pressure contact members 11a and 11b toward the cutting position Cp. This movement is performed by feeding the sheet bundle 200 held between the press contact members 11a and 11b by the feed motor Mf1 that moves in the vertical direction in FIG. 2A and the feed motor Mf2 that moves in the front-rear direction in FIG. It is performed by transferring in the cutting position Cp direction.

  The cutting edge press unit 17 holds the sheet bundle 200 held by the sheet holding unit 11 and transferred to the cutting position Cp so as to be cut. The cutting edge press portion 17 includes a pressure member 19, a biasing spring (not shown) that biases the pressure member 19, and a pressure release member (such as a traction member and a screw screw member).

  The cutting unit 20 includes a cutting blade 22 and a driving member for the cutting blade 22. In FIG. 2 (A), it has the plate-shaped cutting blade 22, the operation member (screw mechanism) 23 of the cutting blade 22, and the drive motor Mc. The blade receiving member 21 in FIG. 2A is arranged at a cutting position Cp at a position facing the cutting blade 22 with the sheet bundle 200 interposed therebetween, and is configured by an elastic member that does not wear the cutting edge of the cutting blade 22. Yes.

  The feeder units 25a and 25b are transport mechanisms that feed the sheet bundle 200 rotated by the sheet holding unit 10 and changed in direction toward the cutting position Cp to the cutting position Cp while being held by the sheet holding unit 11. Including. 2A, the sheet holding unit 10 rotates the sheet bundle 200 to change the periphery of the sheet bundle toward the cutting position Cp, and then the sheet holding unit 11 moves the sheet bundle 200 in the direction of the cutting position Cp. Has been moved to. Thus, the cutting edge of the sheet bundle 200 is associated with the cutting blade 22.

  In such a configuration, the sheet bundle cutting apparatus 101 controls the sheet holding unit 11, the cutting edge press unit 17, and the cutting unit 20 as follows when cutting the sheet bundle 200. The sheet holding unit 11 holds the sheet bundle 200 between the press contact members 11a and 11b. In this operation, the pressure contact motor Mg is rotated, and the motor Mg is stopped by a signal from a pressure contact sensor (for example, a sheet contact sensor disposed on the pressure contact member 11a). Thus, the sheet bundle 200 is sent to the cutting position Cp while being sandwiched between the press contact members 11a and 11b. Note that the pressing force of the pressure contact members 11a and 11b is applied by a pressure spring (not shown).

  The sheet bundle cutting device 101 rotates the first motor Mt1 and the second motor Mt2 in the same rotation direction at the same speed. Each of the motors Mt1 and Mt2 is a stepping motor, and its rotation angle can be controlled (for example, PWM control). The rotational speeds of the motors Mt1 and Mt2 can also be adjusted from a high speed to a low speed by changing the frequency and duty ratio of a pulse signal supplied to the motor driver.

  As described above, according to the sheet bundle cutting device according to the embodiment, the sheet bundle can be stably rotated regardless of the size of the sheet bundle, and the cutting edge of the sheet bundle can be positioned with respect to the cutting blade. .

  Further, the surface of the sheet holding unit 10 that presses the sheet bundle has an area large enough to press the surface of the sheet bundle so as to be sandwiched, and the influence of the moment of inertia is smaller than that of the sheet holding unit 11. Has an area of However, in addition to changing the area of the pressure contact surface of the sheet holding unit 11, the influence of the moment of inertia may be reduced by pressing the sheet bundle at a plurality of locations to sandwich the sheet bundle.

  FIG. 4 is a functional block diagram illustrating a functional configuration of a bookbinding system including the bookbinding apparatus 100, the sheet bundle cutting apparatus 101, and the image forming apparatus 102 according to the embodiment.

  In the bookbinding system in which the image forming apparatus 102, the bookbinding apparatus 100, and the sheet bundle cutting apparatus 101 are connected as illustrated in FIG. 1, for example, the CPU 400 provided in the image forming apparatus 102 includes a cutting direction (number of times) setting unit 402 and a job. Functions as a setting unit 401 and a cutting amount setting unit 403 are provided. These functions are realized by the CPU 400 executing a program stored in the ROM 404.

  The CPU 410 that controls the bookbinding apparatus 100 and the sheet bundle cutting apparatus 101 implements the functions described below by reading a program from the ROM 417 and executing it. The CPU 410 also receives a post-processing mode instruction signal, a job end signal, sheet size information, other information required for bookbinding, and a command signal from the CPU 400 of the image forming apparatus 102.

  The accumulation control unit 411 stacks and stores the sheets printed by the image forming apparatus 102 on the accumulation tray 42 in a bundle shape. The adhesive application control unit 412 controls the adhesive application unit 43 that applies adhesive paste to the sheet bundle aligned by the stacking unit 40. The cover binding control unit 413 controls the cover binding unit 45 that binds the cover sheet to the sheet bundle to which the adhesive is applied by the adhesive application unit 43. The sheet bundle rotation control unit 414 controls the rotation of the sheet bundle by the sheet holding unit 10 of the sheet bundle cutting apparatus 101 as described above. The cutting control unit 415 controls cutting of the sheet bundle 200 held by the sheet holding unit 11 and transferred to the cutting position Cp. The stack control unit 416 conveys and stores the cut sheet bundle to the storage stacker 50.

  FIG. 5 is a flowchart for describing processing executed by the CPU 410 of the bookbinding system according to the embodiment. Note that the processing shown in this flowchart is achieved by the CPU 410 executing a program stored in the ROM 417.

  First, in step S <b> 501, the CPU determines whether or not to execute a bookbinding process based on information set in a job from the image forming apparatus 102. If it is determined that the bookbinding process is to be executed, the process advances to step S502, and the CPU 410 performs the bookbinding process from sheet stacking to glue application and cover binding according to the bookbinding mode set in the job. On the other hand, if it is determined in S501 that the bookbinding process is not to be executed, this process is terminated.

  In step S503, the CPU 410 connects the pressure contact member 10a and the pressure contact member 11a, and the pressure contact member 10b and the pressure contact member 11b, and prepares to receive the sheet bundle 200 that has been completed up to cover binding. If the cutting in the designated direction (number of times) has not been completed, the sheet bundle 200 needs to be rotated again to cut the uncut edge, and the connecting operation described above is also performed at that time.

  In step S504, the CPU 410 presses and holds the sheet bundle 200 with the holding members connected in step S503, rotates the sheet bundle 200 in step S505, and stops the sheet bundle 200 at the cutting angle of the sheet bundle 200 in step S506. In step S507, the CPU 410 rotates the pressure contact motors Mg3 and Mg4 to release the connection between the pressure contact member 10a and the pressure contact member 11a, and the pressure contact member 10b and the pressure contact member 11b.

  In step S508, the CPU 410 rotates the feed motor Mf1 or Mf2 to transfer the sheet bundle 200 to the cutting position Cp in a state where the sheet bundle 200 is sandwiched between the press contact members 11a and 11b. At this time, the cutting amount set by the cutting amount setting unit 403 is set between the cutting edge of the sheet bundle 200 and the cutting line of the cutting blade 22. In step S <b> 509, the CPU 401 rotates the cutter motor Mc while pressing the sheet bundle 200 with the cutting edge press unit 17, and cuts the periphery of the sheet bundle 200 with the cutting blade 22. When the cutting operation is thus completed, the pressing of the sheet bundle 200 by the cutting edge press unit 17 is released. In step S510, the CPU 410 rotates the feed motor Mf1 or Mf2 to raise the sheet bundle 200 from the cutting position Cp to the connecting position of the press contact member 10a and the press contact member 11a, and the press contact member 10b and the press contact member 11b. In step S511, the CPU 410 determines whether or not all the cutting of the peripheral edge of the designated sheet bundle has been completed. If it is determined that the cutting has not been completed, the CPU 410 returns to step S503 and repeatedly executes the same operation as described above. When the CPU 410 determines in step S511 that all cutting of the peripheral edge of the sheet bundle in the designated direction has been completed, the process proceeds to step S512, where the cut sheet bundle 200 is transferred to and stored in the storage stacker 50 on the downstream side. The process ends.

  As described above, according to the embodiment, when cutting the peripheral edge of the sheet bundle, when rotating the sheet bundle in order to position the peripheral edge of the sheet bundle at the cutting position, the sheet bundle is held in a wider area. Rotate. When cutting the sheet bundle, the sheet bundle is nipped and cut with a smaller area. Thereby, there is an effect that damage of the sheet bundle during rotation of the sheet bundle can be prevented.

  When rotating the sheet bundle, since the area where the sheet bundle is pressed is large, the force for pressing the sheet bundle can be reduced, and the surface of the sheet bundle is less likely to be damaged such as wrinkles.

  Further, when the sheet bundle is cut, the sheet bundle is pressed by the sheet holding portion having a small pressure contact area, so that the sheet holding portion having a large pressure contact area can be prevented from becoming a hindrance to cutting.

  In the above embodiment, when the sheet bundle is rotated, the press contact member 10a and the press contact member 11a, and the press contact member 10b and the press contact member 11b are connected to each other so that they are simultaneously rotated at the same speed. The invention is not limited to this. For example, the pressure contact member 10a and the pressure contact member 11a, and the pressure contact member 10b and the pressure contact member 11b may be synchronized and rotated at the same speed at the same time.

  In the above embodiment, the sheet holding portions 10 and 11 are described as rotating together when the sheet bundle is rotated. However, the present invention is not limited to this, and the sheet is formed by only the pressure contact members 10a and 10b. The bundle may be rotated.

  Further, when the sheet bundle is cut, it is sufficient that at least the pressure contact members 11a and 11b sandwich the sheet bundle. Therefore, if the pressing members 10a and 10b do not interfere with cutting, the sheet may be cut in a state where the sheet bundle is sandwiched by the pressing members 10a and 10b in addition to the pressing members 11a and 11b. At this time, the pressure contact members 10a and 10b are configured to be movable in accordance with the movement of the pressure contact members 11a and 11b. Further, when cutting is hindered, it may be configured to retreat to a position that does not hinder cutting.

  In the above-described embodiment, the sheet holding unit 10 is configured to be a member larger than the sheet holding unit 11, but the application of the present invention is not limited thereto, and the sheet holding unit 10 forms a sheet bundle by a plurality of press contact parts. The present invention can be applied even if the total area is larger than that of the sheet holding unit 11 as the holding structure. At this time, if necessary, a groove for moving the sheet holding unit 11 may be provided in the sheet holding unit 10.

  DESCRIPTION OF SYMBOLS 10,11 ... Sheet holding part, 10a, 10b ... Pressure contact member, 11a, 11b ... Pressure contact member, 22 ... Cutting blade, 100 ... Bookbinding apparatus, 101 ... Sheet bundle cutting apparatus, 102 ... Image forming apparatus, 200 ... Sheet bundle, 201 ... groove

Claims (11)

A cutting means for cutting a sheet bundle at a cutting position;
First clamping means capable of clamping the sheet bundle;
Second clamping means capable of clamping the sheet bundle at a position different from the first clamping means;
Changing means for changing the position of the sheet bundle relative to the cutting position in a state of being held by the first and second holding means;
A cutting apparatus comprising:   2. The cutting apparatus according to claim 1, wherein the first clamping unit clamps the sheet bundle in an area wider than an area in which the second clamping unit clamps the sheet bundle.   The cutting apparatus according to claim 1, wherein the changing unit includes a rotating unit that rotates the sheet bundle with respect to the cutting position.   3. The changing unit includes a rotating unit that rotates the sheet bundle with respect to the cutting position in a state where the sheet bundle is not clamped by the second clamping unit but is clamped by the first clamping unit. The cutting device described in 1.   The change unit includes a moving unit that linearly moves the sheet bundle with respect to the cutting position in a state where the sheet bundle is held by at least one of the first and second holding units. The cutting apparatus according to 3 or 4.   The changing unit includes a moving unit that moves the sheet bundle linearly with respect to the cutting position in a state where the sheet bundle is not clamped by the first clamping unit but is clamped by the second clamping unit. The cutting device according to claim 3 or 4.   The cutting apparatus according to claim 5 or 6, wherein the moving means moves the sheet bundle rotated by the rotating means.   The first and second clamping means may change the position of the sheet bundle without interfering with each other in a state where one of the first and second sheets is released from clamping and the other is holding the sheet bundle. The cutting apparatus according to any one of claims 1 to 7, wherein the cutting apparatus is configured to be able to be changed by the operation. A bookbinding means for performing a bookbinding process on a sheet bundle;
The cutting apparatus according to any one of claims 1 to 8, wherein the sheet bundle bound by the bookbinding means is cut.
A bookbinding apparatus comprising: A bookbinding apparatus according to claim 9;
An image forming apparatus for supplying a printed sheet to the bookbinding apparatus;
A bookbinding system comprising: A cutting unit that cuts the sheet bundle at a cutting position; a first holding unit that can hold the sheet bundle; and a second holding unit that can hold the sheet bundle at a position different from the first holding unit. A method for controlling a cutting device,
A control method for a cutting apparatus, comprising: a changing step of changing a position of the sheet bundle with respect to the cutting position in a state where the sheet bundle is held by the first and second holding means.

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