JP2015000570A - Bookbinding device and bookbinding method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bookbinding device and a bookbinding method capable of providing a booklet that can satisfy different requests of readers in terms of a page turning characteristic.SOLUTION: A bookbinding device of this invention creates a booklet by cutting an edge of a sheet P in which an image is formed by an image formation device. It comprises: a cutter 50 for cutting the edge of the sheet P; a position adjustment part 72, 80 for adjusting a relative position of the cutter 50 and the sheet P in order to obliquely cut the edge of the sheep P at a small port side of the booklet within a plane of the sheet P by the cutter 50; a control unit for adjusting the relative position of the cutter 50 and the sheet P in every sheet while controlling the position adjustment part 72, 80 so as to increase or decrease an inclination angle of the edge to be cut by the cutter 50 as the number of pages of the booklet progresses, and for performing a cutting process of the sheet P.

Description

  The present invention relates to a bookbinding apparatus and a bookbinding method for creating a booklet by cutting an edge of a sheet on which an image is formed by an image forming apparatus.

  The image forming apparatus is equipped with a post-processing apparatus that performs post-processing on a sheet on which an image is formed. According to the post-processing apparatus, for example, a booklet can be created by binding a bundle of sheets on which images are formed by the image forming apparatus.

  In relation to this, the following patent document 1 discloses a sheet saddle stitching method in which a plurality of sheets are stacked while being slightly shifted one by one in the longitudinal direction, and a bundle of stacked sheets is saddle stitched to create a booklet. Has been proposed. According to this method, since the edge of each page corresponding to the fore edge of the booklet is slightly shifted in the same direction, an area where the reader puts a finger when turning the booklet page is secured at the edge of the page. , Readers can easily turn booklet pages.

  By the way, the characteristics required for turning pages of a booklet vary depending on the situation and preference of the reader turning the pages. For example, a reader may want to turn a page reliably one by one, or may want to turn a page quickly and efficiently.

  However, in the above method, since the size of the area secured at the end of each page of the booklet is constant so that the reader's finger is applied, the page turning characteristic of the booklet is also constant. For this reason, the above method cannot provide a booklet that satisfies different reader requirements for page turning characteristics.

JP-A-8-164686

  The present invention has been made in view of the above-described problems. Accordingly, an object of the present invention is to provide a bookbinding apparatus and a bookbinding method capable of providing a booklet that can satisfy different requirements of a reader for page turning characteristics.

  The above object of the present invention is achieved by the following means.

  (1) A bookbinding apparatus that creates a booklet by cutting an edge of a sheet on which an image is formed by an image forming apparatus, a cutter for cutting the edge of the sheet, and a sheet corresponding to the fore edge of the booklet In order to cut the end portion obliquely in the plane of the paper by the cutter, a position adjusting unit that adjusts the relative position of the cutter and the paper, and the inclination angle of the end portion that is cut obliquely by the cutter Is a control unit that controls the position adjustment unit to adjust the relative position between the cutter and the paper for each paper so that the number of pages of the booklet increases or decreases as the number of pages of the booklet advances. And a bookbinding apparatus.

  (2) The bookbinding apparatus according to (1), wherein the control unit controls the position adjustment unit so that an inclination angle of the end portion increases or decreases for each predetermined number of pages.

  (3) The control unit controls the position adjusting unit so that the inclination angle of the end portion increases or decreases between a plurality of predetermined pages of the booklet. The bookbinding apparatus according to (2).

  (4) The booklet is created based on print data, and the inclination angle of the end portion is at least paper size information, margin information, binding position information, opening direction information, and page feed direction information included in the print data. The bookbinding apparatus according to any one of (1) to (3), wherein the bookbinding apparatus is determined based on one.

  (5) A bookbinding method for creating a booklet by cutting an edge of a sheet on which an image is formed by an image forming apparatus, and cutting the sheet diagonally in a plane of the sheet by a cutter for cutting the edge of the sheet Adjusting the relative position of the cutter and the paper for each paper so that the inclination angle of the end of the paper corresponding to the fore edge of the booklet increases or decreases as the number of pages of the booklet increases. A bookbinding method comprising: (a) and a step (b) of cutting the end portion of the paper with the cutter whose relative position to the paper is adjusted in the step (a).

  (6) In the step (a), the relative position between the cutter and the paper is adjusted so that the inclination angle of the end portion increases or decreases every predetermined number of pages. The bookbinding method according to 5).

  (7) In the step (a), the relative position between the cutter and the paper is adjusted so that the inclination angle of the end portion increases or decreases between a plurality of predetermined pages of the booklet. The bookbinding method as described in (5) or (6) above, which is characterized.

  (8) The booklet is created on the basis of print data, and the inclination angle of the edge portion is at least paper size information, margin information, binding position information, opening direction information, and page feed direction information included in the print data. The bookbinding method according to any one of (5) to (7), wherein the bookbinding method is determined based on one.

  According to the present invention, a booklet is created in which the size of the area on which the finger is applied changes depending on the position of the edge of the sheet on which the reader puts his finger, and the page turning characteristics change. For this reason, it is possible to select a desired page turning characteristic for the booklet by changing the position of the edge of the sheet on which the reader puts his finger. In other words, a booklet is provided that can meet different reader demands for page turning characteristics.

1 is a block diagram illustrating an overall configuration of an image forming system to which a bookbinding apparatus according to an embodiment of the present invention is applied. It is a block diagram which shows schematic structure of PC. 1 is a block diagram illustrating a schematic configuration of an image forming apparatus. It is a block diagram which shows schematic structure of a post-processing apparatus. It is a perspective view which shows schematic structure of a cutting process part. 3 is a flowchart illustrating a bookbinding process in the image forming system. It is a flowchart which shows the procedure of a cutting parameter determination process. It is a figure for demonstrating a cutting parameter. It is a figure which shows an example of a cutting parameter. It is a figure which shows an example of the booklet produced by bookbinding processing. It is a figure which shows the other example of the booklet produced by a bookbinding process. It is a figure which shows the further another example of the booklet produced by bookbinding processing. It is a figure which shows the further another example of the booklet produced by bookbinding processing.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a block diagram showing the overall configuration of an image forming system to which a bookbinding apparatus according to an embodiment of the present invention is applied. The image forming system includes a PC (Personal Computer) 1 and an image forming apparatus 2, which are connected to each other via a network 4 so as to communicate with each other. Further, the image forming apparatus 2 is equipped with a post-processing apparatus 3 that performs post-processing on a sheet conveyed from the image forming apparatus 2.

  The network 4 includes a LAN (Local Area Network) in which computers and network devices are connected according to standards such as Ethernet (registered trademark), FDDI (Fiber Distributed Data Interface), and Wi-Fi (Wireless Fidelity), and a dedicated line between LANs. WAN (Wide Area Network) etc. connected by Note that the types and number of devices connected to the network 4 are not limited to the example shown in FIG.

  FIG. 2 is a block diagram illustrating a schematic configuration of the PC 1. The PC 1 includes a control unit 11, a storage unit 12, a display unit 13, an input unit 14, and a communication unit 15, which are connected to each other via a bus 16 for exchanging signals.

  The control unit 11 is a CPU (Central Processing Unit), and controls the above-described units and performs various arithmetic processes according to a program. The storage unit 12 includes a ROM (Read Only Memory) that stores various programs and various data in advance, a RAM (Random Access Memory) that temporarily stores programs and data as a work area, various programs including an operating system, and various types. It consists of a hard disk for storing data.

  The display unit 13 is a liquid crystal display, for example, and displays various types of information. The input unit 14 includes a pointing device such as a mouse and a keyboard, and is used for performing various inputs.

  The communication unit 15 is an interface for communicating with other devices via the network 4 and uses standards such as Ethernet (registered trademark), FDDI, and Wi-Fi.

  The storage unit 12 of the PC 1 includes a document file creation application for creating a document file, and a printer for converting the document file into print data described in a page description language (PDL) that can be interpreted by the image forming apparatus 2. The driver is installed. The user of the PC 1 can generate a print job for creating a booklet by binding the bundle of sheets on which the image is formed by the image forming apparatus 2 with the post-processing apparatus 3 through the print setting screen provided by the printer driver.

  FIG. 3 is a block diagram illustrating a schematic configuration of the image forming apparatus 2. The image forming apparatus 2 includes a control unit 21, a storage unit 22, an operation panel 23, an image reading unit 24, a paper feeding unit 25, an image forming unit 26, and a communication unit 27, which exchange signals. They are connected to each other via a bus 28. Note that, among the above-described units of the image forming apparatus 2, descriptions of portions having functions similar to those of the above-described units of the PC 1 are omitted in order to avoid duplication of description.

  The operation panel 23 includes a touch panel, a numeric keypad, a start button, a stop button, and the like, and is used for displaying various information and inputting various instructions.

  The image reading unit 24 irradiates a document set at a predetermined reading position or a document conveyed to a predetermined reading position by an ADF (Auto Document Feeder) with a light source such as a fluorescent lamp, and reflects the reflected light to a CCD (Charge). (Coupled Device) An image sensor such as an image sensor performs photoelectric conversion to generate image data from the electrical signal.

  The paper supply unit 25 accommodates paper as a recording sheet used for printing. The paper feed unit 25 has a plurality of paper feed trays, and sends out the sheets stored in the paper feed tray one by one to the image forming unit 26.

  The image forming unit 26 forms an image based on various data on a sheet using a known image forming process such as an electrophotographic process including charging, exposure, development, transfer, and fixing processes.

  FIG. 4 is a block diagram illustrating a schematic configuration of the post-processing device 3. The post-processing device 3 includes a control unit 31, a storage unit 32, a punch processing unit 33, a folding processing unit 34, a cutting processing unit 35, a binding processing unit 36, and a communication unit 37 as a bookbinding device. Are connected to each other via a bus 38 for exchanging data. In addition, about the part which has the function similar to the said each part of PC1 among the said each part of the post-processing apparatus 3, the description is abbreviate | omitted in order to avoid duplication.

  The punch processing unit 33 forms a file hole at the end of the sheet conveyed from the image forming apparatus 2. The folding processing unit 34 performs a folding process such as a middle folding in which the sheet conveyed from the image forming apparatus 2 is folded at the center.

  The cutting processing unit 35 cuts the edge of the sheet conveyed from the image forming apparatus 2. The cutting processing unit 35 according to the present embodiment can cut the edge of the sheet obliquely within the plane of the sheet. A detailed description of the cutting processing unit 35 will be described later.

  The binding processing unit 36 performs a binding process such as saddle stitching for binding a bundle of sheets at the center, and ring binding for binding a spine portion of the bundle of sheets with a ring binding member.

  The post-processing device 3 can communicate with the image forming device 2 via the communication unit 37.

  FIG. 5 is a perspective view illustrating a schematic configuration of the cutting processing unit 35. The cutting processing unit 35 includes a cutter 50 for cutting the paper P, a blade receiving unit 60 that contacts the blade edge of the cutter 50, a driving unit 70 that drives the cutter 50, and a transport unit 80 that transports the paper P. Prepare.

  The cutter 50 cuts the edge of the paper P. The cutter 50 cuts the edge of the paper P by pressing the blade edge against the edge of the paper P.

  The blade receiving portion 60 is disposed so as to face the blade edge of the cutter 50, and has a blade receiving surface 61 that contacts the blade edge of the cutter 50. The edge of the paper P is placed on the blade receiving surface 61, and the edge of the paper P is cut when the cutter 50 is lowered while the edge of the paper P is placed on the blade receiving surface 61. The

  The drive unit 70 includes a vertical drive unit 71 that drives the cutter 50 up and down, and a rotation drive unit 72 that rotates the cutter 50 in the surface direction of the paper P. The vertical drive unit 71 and the rotation drive unit 72 are controlled by the control unit 31.

  The transport unit 80 includes transport rollers 81 and 82 that sandwich and transport the paper P. The conveyance unit 80 is controlled by the control unit 31, and can arrange the end portion of the paper P at a desired position on the blade receiving surface 61 of the blade receiving unit 60.

  Here, the rotation driving unit 72 and the conveyance unit 80 function as a position adjusting unit that adjusts the relative position between the cutter 50 and the paper P in conjunction with each other. According to such a configuration, the end portion of the sheet P conveyed from the image forming apparatus 2 can be cut obliquely at a predetermined cutting angle by the cutter 50. The control unit 31 controls the rotation driving unit 72 and the conveyance unit 80 so as to increase or decrease the inclination angle of the end of the sheet P that is cut obliquely as the number of pages of the booklet advances, so that the cutter 50 and the sheet P are controlled. The relative position of each is adjusted for each sheet.

  Note that each of the PC 1, the image forming apparatus 2, and the post-processing apparatus 3 may include components other than the above-described components, or some of the above-described components may not be included. Also good.

  In the image forming system configured as described above, a booklet is created in which the edge of the paper corresponding to the fore edge of the booklet is inclined so that the inclination angle increases or decreases as the number of pages of the booklet advances. The operation of the image forming system will be described below with reference to FIGS.

  FIG. 6 is a flowchart illustrating a bookbinding process in the image forming system. Prior to execution of the bookbinding process, print data is transmitted from the PC 1 to the image forming apparatus 2 to instruct execution of a print job for creating a booklet by binding a bundle of sheets.

  First, the image forming apparatus 2 acquires job information (step S101). More specifically, the image forming apparatus 2 acquires various types of information included in the print data transmitted from the PC 1 as job information. The job information includes image quality mode information indicating the image quality, paper size information indicating the paper size, margin information indicating the paper margin (printing area information), binding position information indicating the booklet binding position, and the booklet opening direction. Open direction information indicating the page direction, page feed direction information indicating the page feed direction of the booklet, and number of copies information indicating the number of copies to be printed.

  Subsequently, the image forming apparatus 2 executes a cutting parameter determination process (step S102). Specifically, the image forming apparatus 2 determines a cutting parameter such as a cutting angle used in a sheet cutting process described later based on the job information acquired in the process shown in step S101.

  FIG. 7 is a flowchart showing the procedure of the cutting parameter determination process shown in step S102 of FIG. The algorithm shown in the flowchart of FIG. 7 is stored as a program in the storage unit 22 of the image forming apparatus 2 and is executed by the control unit 21.

  First, the image forming apparatus 2 determines the paper length Lvmax (step S201). Specifically, the image forming apparatus 2 determines the paper length Lvmax with reference to paper size information and binding position information included in the print data. For example, when the paper size is A4 length (297 × 210 mm) and the paper binding position is on the left side, the length of the long side of the paper (297 mm) is determined as the paper length Lvmax as shown in FIG.

  Subsequently, the image forming apparatus 2 determines the maximum margin width Lhmax (step S202). Specifically, the image forming apparatus 2 determines the maximum margin width Lhmax with reference to margin information and binding position information included in the print data. For example, when the binding position of the sheet is the left side, as shown in FIG. 8, the width of the right margin area of the sheet that does not lack the print area is determined as the maximum margin width Lhmax. If there is no effect on the image even in the print area, a part of the print area may be included in the blank area.

Subsequently, the image forming apparatus 2 determines the margin width Lh _n of each sheet (step S203). Specifically, the image forming apparatus 2 uses the maximum margin width Lhmax determined in the process shown in step S202 and the cutting length of the upper end of the sheet to be cut obliquely based on the number N of sheets constituting the booklet. A certain margin width Lh _n is determined for each sheet. For example, as shown in FIG. 8, the margin width Lh ₁ of the first page of the booklet is maximized, as the margin width Lh _n-1 of the immediately preceding page of the last page of the booklet is minimized, the maximum margin width Lhmax as the margin width Lh ₁ of the first page, the margin width Lh _n of each sheet is determined. In the present embodiment, the margin width difference is first determined according to the following equation (1) so that the margin width difference (Lh _n −Lh _{n + 1} ) between adjacent sheets becomes constant. Then, according to the difference of the determined margin widths, margin width Lh _n of each sheet are determined according to the page number of the paper.

Lh _n −Lh _{n + 1} = Lhmax / (N−1) (1)
Then, the image forming apparatus 2 determines the cutting angle θ _n of each sheet (step S204) and ends the process. Specifically, the image forming apparatus 2 includes a sheet length Lvmax determined in the process shown in step S201, on the basis of the margin width Lh _n determined in the process shown in step S203, when cutting the edge of the sheet of paper The cutting angle θ _n is determined for each sheet. The cutting angle θ _n is determined according to the following equation (2), for example.

θ _n = tan ⁻¹ (Lh _n / Lvmax) (2)
As a result, for example, as shown in FIG. 8, the cutting angle θ ₁ of the first page of the booklet is maximized, and the cutting angle θ _n−1 of the page immediately before the last page of the booklet is minimized. θ _n is determined.

As described above, according to the processing of the flowchart shown in FIG. 7, the cutting parameters such as the cutting angle θ _n used in the paper cutting processing described later are determined.

FIG. 9 is a diagram illustrating an example of a cutting parameter. FIG. 9 shows each cutting parameter when the paper size is A4 portrait, the margin area is 25 mm, and the number of pages is 21. In the paper cutting process described later, the edge of the paper is cut according to the cutting angle θ _n included in the cutting parameters.

  As described above, when the cutting parameter is determined in the process shown in step S102, the image forming apparatus 2 forms an image on the sheet (step S103). More specifically, the image forming apparatus 2 analyzes the print data to generate bitmap format image data, and forms an image based on the image data on a sheet.

Subsequently, the post-processing device 3 executes a paper cutting process (step S104). Specifically, the post-processing device 3 cuts the edge of the paper on which the image is formed by the image forming device 2 obliquely for each paper according to the cutting angle θ _n corresponding to the page number of the paper.

  Then, the post-processing device 3 executes paper alignment / binding processing (step S105), and ends the processing. Specifically, the post-processing device 3 aligns the sheets whose edges have been cut in the process shown in step S104, and binds the ends of the bundle of sheets with a ring binding member or the like to complete the booklet.

  As described above, according to the processing of the flowchart shown in FIG. 6, a booklet is created in which the edge of the paper corresponding to the fore edge of the booklet is inclined.

  FIG. 10 is a diagram illustrating an example of a booklet created by the bookbinding process. FIG. 10A is a top view of the booklet, and FIG. 10B is a plan view of the booklet. FIG. 10C is a bottom view of the booklet.

  As shown in FIG. 10, in the booklet created by the bookbinding process, the left end of the bundle of sheets is bound, and the end of each sheet P corresponding to the fore edge (right side) of the booklet is inclined. Yes. Here, the inclination angle of the end portion of each sheet P decreases as the number of pages of the booklet advances.

  According to such a configuration, since the area B where the reader's finger is placed at the end of the paper P is secured, the reader can easily turn the page of the booklet. For this reason, it is not necessary for the reader to perform a general page turning to turn a page by bending a booklet to cause a gap between sheets and forcibly forming a region to put a finger on.

  Further, in the booklet created by the bookbinding process described above, the distance d between the end portions of two adjacent sheets P is maximum at the upper end of the booklet and decreases toward the lower end of the booklet.

  According to such a configuration, when the reader turns the booklet page, the page turning characteristic of the booklet can be changed by changing the position in the longitudinal direction of the end of the paper P on which the reader puts his finger. Specifically, if the reader places his / her finger on the upper side of the edge of the paper P, the booklet pages can be reliably turned one by one using the region B having a large distance d. On the other hand, if the reader places a finger on the lower side of the edge of the paper P, the page of the booklet can be quickly turned using the region B where the distance d is small. That is, the reader can select a desired page turning characteristic and perform an optimal page turning, and can handle the booklet comfortably.

  As described above, according to the bookbinding process according to the present embodiment, a booklet whose page turning characteristics change according to the position of the edge of the sheet on which the reader's finger is applied is created. In other words, a booklet is provided that can meet different reader demands for page turning characteristics.

  In the above-described embodiment, the end portions of the sheets are cut obliquely so that the inclination angles of the end portions of the respective sheets constituting the booklet are all different. However, the cutting content of the edge of the paper is variously changed according to the number of sheets, margin width, paper length, paper type, and the like.

  FIG. 11 is a diagram illustrating another example of a booklet created by the bookbinding process. FIG. 11A to FIG. 11C are upper end views of booklets according to other examples.

  As shown in FIG. 11A, in the bookbinding process according to the present embodiment, the inclination angle of the edge of the paper P is decreased every predetermined number of pages (every two pages in FIG. 11A). The end of the paper P may be inclined. According to such a configuration, the distance d can be made larger than in the case shown in FIG. Therefore, even for a booklet having a large number of pages (the number of sheets), the area B where the reader's finger is placed can be secured.

  Further, as shown in FIG. 11B, in the bookbinding process according to the present embodiment, the end of the paper P may be inclined only from the first page to the middle page of the booklet. Specifically, for example, for a 100-page booklet, from the first page to the 50th page, the edge of the paper P is cut obliquely to secure an area B where the finger is applied, and from the 51st page to the 100th page. Does not cut the edge of the paper P and does not secure the area B where the finger is applied.

  According to such a configuration, even if the booklet cannot be folded because the booklet has a large number of pages or the paper is thick and stiff, it is difficult to fold the booklet in the initial stage. A page can be turned by placing a finger on the region B obtained by cutting the portion diagonally, and a general page turning can be performed from the middle page by forcibly forming a region where the finger is bent by folding the booklet. .

Further, as shown in FIG. 11 (C), the inclination is attached to an end of the sheet P as the inclination angle of the end portion of the sheet P as the first group G ₁ halfway page from the first page of the booklet is reduced, it may be given a similarly inclined edge of the sheet of paper P and the next first group G ₁ to the last page as a second group G ₂ of the page in the middle of the page.

Further, the sheet belonging to the first group G ₁ without the inclination to the end, may be only attached selectively tilted to the end of the paper belonging to the second group G _2, or a booklet in the middle The inclination may be selectively given only to the edge of the paper belonging to the page (for example, the 30th to 40th pages).

  FIG. 12 is a diagram showing still another example of a booklet created by the bookbinding process. 12A is a top view of the booklet, and FIG. 12B is a plan view of the booklet. FIG. 12C is a bottom view of the booklet.

As shown in FIG. 12, the booklet according to another example has the left end of the bundle of sheets bound, and the end of each sheet P corresponding to the fore edge of the booklet has a center in the longitudinal direction of the sheet P. Inclined with reference to the part. Specifically, the paper belonging to the first group G1 from the _first page of the booklet to the middle page is inclined using the blank area in the upper half of the booklet, and the edge of each paper is inclined. The angle decreases as the number of pages in the booklet progresses. On the other hand, the paper belonging the next page in the middle page to the second group G ₂ to the last page, using the margin area of the lower half of the booklet are inclined attached, the inclination of the ends of each sheet The angle increases as the number of pages in the booklet progresses.

  FIG. 13 is a diagram illustrating still another example of the booklet created by the bookbinding process. FIG. 13A is a left end view of the booklet, and FIG. 13B is a plan view of the booklet. FIG. 13C is a right end view of the booklet.

  As shown in FIG. 13, in the booklet according to another example, the upper end portion of the bundle of sheets is bound, and the end portion of each sheet P corresponding to the fore edge (lower side) of the booklet is inclined. It has been. Here, the inclination angle of the end portion of each sheet P increases as the number of pages of the booklet increases.

  The inclination angle of each paper is determined based on information (paper size information, margin information, binding position information, opening direction information, page feed direction information, etc.) included in the print data.

  The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the claims.

  For example, in the above-described embodiment, the cutting parameter determination process is executed by the control unit of the image forming apparatus. However, the cutting parameter determination process may be executed by the control unit of the post-processing device.

  In the above-described embodiment, the post-processing apparatus is attached to the image forming apparatus. However, the post-processing apparatus may be built in the image forming apparatus. Alternatively, the post-processing apparatus may be arranged separately from the image forming apparatus.

  In the above-described embodiment, the paper on which the image is formed by the image forming apparatus is cut to create a booklet. However, a sheet on which an image is not formed may be cut and an image may be formed by the image forming apparatus on the cut sheet.

  In the above-described embodiment, the case where a booklet is created by executing a print job has been described as an example. However, the present invention can also be applied to a case where a booklet is created by executing a copy job.

  The means and method for performing various processes in the image forming system according to the above-described embodiments can be realized by either a dedicated hardware circuit or a programmed computer. The program may be provided by a computer-readable recording medium such as a flexible disk and a CD-ROM, or may be provided online via a network such as the Internet. In this case, the program recorded on the computer-readable recording medium is usually transferred to and stored in a storage unit such as a hard disk. The program may be provided as a single application software, or may be incorporated in the software of the apparatus as one function of the image forming system.

1 PC,
2 image forming apparatus,
3 post-processing equipment,
4 network,
11, 21, 31 control unit,
12, 22, 32 storage unit,
13 Display section,
14 input section,
15, 27, 37 communication section,
16, 28, 38 buses,
23 Operation panel,
24 image reading unit,
25 Paper feeder,
26 Image forming unit,
33 Punch processing part,
34 Folding processing part,
35 Cutting processing section,
36 Binding processing section,
50 cutters,
60 blade receiver,
70 drive unit,
80 Conveying section.

Claims (8)

A bookbinding apparatus that creates a booklet by cutting an edge of a sheet on which an image is formed by an image forming apparatus,
A cutter for cutting the edge of the paper,
A position adjusting unit that adjusts the relative position between the cutter and the paper in order to cut the end of the paper corresponding to the fore edge of the booklet obliquely within the plane of the paper by the cutter;
The relative position between the cutter and the sheet is controlled by controlling the position adjusting unit so that the inclination angle of the end portion that is cut obliquely by the cutter increases or decreases as the number of pages of the booklet increases. A control unit that performs the cutting process of the paper while adjusting
A bookbinding apparatus comprising:   2. The bookbinding apparatus according to claim 1, wherein the control unit controls the position adjusting unit so that an inclination angle of the end portion is increased or decreased for each predetermined number of pages.   The said control part controls the said position adjustment part so that the inclination angle of the said edge part may increase or decrease between several predetermined pages of the said booklet, The said adjustment part is characterized by the above-mentioned. Bookbinding equipment. The booklet is created based on print data,
The inclination angle of the edge is determined based on at least one of paper size information, margin information, binding position information, opening direction information, and page feed direction information included in the print data. Item 4. The bookbinding apparatus according to any one of Items 1 to 3. A bookbinding method for creating a booklet by cutting an edge of a sheet on which an image is formed by an image forming apparatus,
The inclination angle of the edge of the paper, which is cut obliquely in the plane of the paper by a cutter for cutting the edge of the paper, increases or decreases as the number of pages of the booklet advances. Step (a) of adjusting the relative position of the cutter and the paper for each paper,
A step (b) of cutting the edge of the paper by the cutter whose relative position to the paper is adjusted in the step (a);
A bookbinding method comprising:   The relative position between the cutter and the paper is adjusted in the step (a) so that the inclination angle of the end portion is increased or decreased every predetermined number of pages. Bookbinding method.   In the step (a), the relative position between the cutter and the paper is adjusted so that the inclination angle of the end portion increases or decreases between a plurality of predetermined pages of the booklet. The bookbinding method according to claim 5 or 6. The booklet is created based on print data,
The inclination angle of the edge is determined based on at least one of paper size information, margin information, binding position information, opening direction information, and page feed direction information included in the print data. Item 8. The bookbinding method according to any one of Items 5 to 7.

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