JP6747096B2 - Image forming apparatus and control program therefor - Google Patents

Description

The present invention relates to an image forming apparatus for imposing an original with a register mark indicating a cutting position and a control program therefor.

In the POD (Print On Demand) industry, when a manuscript is brought into a printing company, if the client desires a borderless finish, the manuscript with a paint addition and a trim mark (outer registration mark) is submitted.
The printing company prints the input document with the register marks, and cuts four sides of the printed material with an offline cutting machine to create a printed material with a borderless finish.
The cutting machine 100 has a mechanism as shown in FIG. 1, and when the size to be cut is input to the cutting machine 100, the cutting position 102 is determined by moving the electric paper contact part 101 to the input position. Fixed paper cover portions 103 and 104 are installed beside the electric paper cover portion 101.
After the cutting position 102 is determined, the paper P is aligned with the corners of the paper contact portions 101, 103 (or 101, 104), and the cutting button is pressed to press the paper P (paper pressing) by the cutting machine 100. The blade falls on the sheet and the sheet P is cut to the input size. Depending on the model of the cutting machine and the paper, for example, several thousand sheets are cut at one time. A plurality of sheets to be cut at one time are arranged in an overlapping manner, and as shown in FIG. 1, in the cutting machine 100 having the paper contact portions 103 and 104 on the left and right, they are set on the left and right respectively and cut together at once. be able to. The sheets that can be cut at the same time are those in which the edges are aligned with the electric paper-applying portion 101, and the position of the register mark (the position to cut) coincides with the cutting position 102.
Naturally, the size of each printed matter (product) after cutting is smaller than the paper size at the time of printing. Hereinafter, for clarity, the size cut out by cutting is referred to as an image cutting size. By printing on paper, the image cutting size is indicated by the register marks at the four corners. The dimension from the electric paper applying portion 101 to the trimming position 102 is called a trimming dimension (105).

Japanese Patent Application Laid-Open No. 2004-242242 discloses that cutting positions are aligned in a straight line for a plurality of images of the same size so as to facilitate cutting work when a plurality of images of different image cutting sizes are attached to one sheet of paper. They are rearranged to line up.

JP, 2009-152671, A

However, since many kinds of originals are brought into the POD, which is often printed in small lots, there is a problem that it is desired to efficiently cut by cutting plural kinds of different sheets at the same time to reduce the number of cuttings.
For example, it is necessary to simultaneously cut different kinds of sheets with different image cutting sizes, such as A4 size and letter size, which are printed on different papers. There is a problem of whether it can be cut.
In the invention described in Patent Document 1, the same kind of sheets that are faced in the same manner can be cut at the same time, but there is no idea of laying out images so that a plurality of different kinds of sheets can be cut at the same time.

The present invention has been made in view of the above problems in the prior art, and an object thereof is to improve productivity by simultaneously cutting a plurality of different kinds of sheets to reduce the number of times of cutting.

This is an issue.

The invention according to claim 1 for solving the above-mentioned problems is a cutting position detecting means for detecting a cutting position indicated by a register mark from print data,
Imposition means for imposing the print data on a print sheet,
Cutting direction determining means for determining a setting direction to a cutting machine when cutting the printing paper at each cutting position after imposition by the imposition means,
A cutting dimension calculating means for calculating a cutting dimension corresponding to the side of the printing paper in the setting direction from the cutting position for each cutting position;
A trimming dimension storage means for storing the trimming dimension,
The imposition means relates to two cutting positions to be arranged on different printing papers or to be arranged off the straight line on the same printing paper, and the cutting size of the already imprinted print data stored in the cutting size storage means. And the cut size of the print data that has not yet been imprinted is the image forming apparatus that imprints the print data that has not been imprinted on at least one set.

According to a second aspect of the present invention, the imposition unit impositions the unimposed print data so that the trimming size of the imprinted print data and the trimming size of the unimprinted print data match. The image forming apparatus according to claim 1, wherein when there are two or more imposition positions, priority is given to the fact that the cutting dimension can be set longer, when determining.

The invention according to claim 3 is provided with a cutting guide means for giving the cutting guide information for guiding the cutting to the area outside the register mark as a print image,
3. The cutting guide means attaches, as cutting guide information, an image showing which register mark and which register mark are combined by the set of cutting dimensions by the imposition means. The image forming apparatus described above.

In the invention according to claim 4, the cutting guide means gives an image showing a setting direction to the cutting machine when cutting the printing paper at each cutting position as cutting guide information corresponding to each cutting position. The image forming apparatus according to claim 3.

The invention according to claim 5 is provided with cutting order giving means for giving a cutting order to each cutting position,
5. The image forming apparatus according to claim 3, wherein the cutting guide means adds the image indicating the cutting order given by the cutting order giving means as cutting guide information corresponding to each cutting position. is there.

According to a sixth aspect of the present invention, the trimming guide means separates the trimming guide relating to each one cutting position from the inside of the register mark which is in contact with the one cutting position when the cutting guide is cut at the one cutting position. The image forming apparatus according to any one of claims 3 to 5, wherein the image forming apparatus is provided in an area outside the register mark that is in contact with the cutting position.

According to a seventh aspect of the present invention, in the imposition unit, the trimming size of the imprinted print data stored in the trimming size storage unit and the trimming size of the unimprinted print data match at least one set. The imposition of the imposition print data is performed under the condition that the printing paper imposition of the imposition print data is different from the imposition of the imposition print data. The image forming apparatus according to any one of claims 1 to 6, which functions in the above.

According to an eighth aspect of the present invention, in the imposition unit, at least one set of the trimming size of the imprinted print data stored in the trimming size storage unit and the trimming size of the unimprinted print data match. Imposing the imposition of the unimprinted print data on the print sheet to which the imposition imprinted print data is imposed and the imposition of the imposition imprinted print data are the same. The image forming apparatus according to claim 6, which functions under a certain condition, or claim 6, which cites claim 5.

According to a ninth aspect of the present invention, the imposition unit cooperates with the cutting order assigning unit, and a plurality of print data to be printed on the same printing paper has a cutting size that matches a separate leaf separated by one cutting. 9. The image forming apparatus according to claim 8, wherein the one set and the other set are separated so that the same set can be simultaneously cut after the one cutting.

The invention according to claim 10 is the image forming apparatus according to claim 8 or 9, wherein the imposition means cooperates with the cutting order giving means to perform imposition so that the page order is arranged in the order of being cut by cutting. Is.

The invention according to claim 11 is a computer,
A cutting position detecting means for detecting the cutting position indicated by the register mark from the print data,
Imposition means for imposing the print data on a print sheet,
Cutting direction determining means for determining a setting direction to a cutting machine when cutting the printing paper at each cutting position after imposition by the imposition means,
A cutting dimension calculating means for calculating a cutting dimension corresponding to the side of the printing paper in the setting direction from the cutting position for each cutting position;
A control program for an image forming apparatus for causing the cutting size storage unit to store the cutting size, the control program comprising:
The imposition means relates to two cutting positions to be arranged on different printing papers or to be arranged off the straight line on the same printing paper, and the cutting size of the already imprinted print data stored in the cutting size storage means. And a control program of the image forming apparatus for imposing the unimposed print data so that the cut size of the unimposed print data matches at least one set.

According to the present invention, the number of cuttings is reduced by simultaneously cutting a plurality of different types of sheets, such as two sheets having different cut image sizes on a single plane and two sheets having different layouts that can be obtained by cutting a single sheet having multiple planes. By doing so, the productivity can be improved.

It is a top view of an example of a cutting machine applied in one embodiment of the present invention. 1 is a configuration block diagram of an image forming apparatus according to an embodiment of the present invention. FIG. 3 is a configuration block diagram of a printer controller according to an embodiment of the present invention. FIG. 3 is a network diagram showing a connection form between the image forming apparatus and the client PC according to the embodiment of the present invention. It is a data flow diagram of a printer controller according to an embodiment of the present invention. 6 is a flowchart of an imposition/printing process in the case of single imposition in the image forming apparatus according to the embodiment of the present invention. FIG. 3 is a plan view of an image of a sheet of print data input to the image forming apparatus according to the embodiment of the present invention. FIG. 3 is a plan view of an image of a sheet of print data previously input to the image forming apparatus according to the embodiment of the present invention. It is an image plan view showing an example of an imposition process to match the cutting dimensions in the image forming apparatus in one embodiment of the present invention, (a) is the imposition process first, (b) is the current imposition Indicates the processing target. FIG. 2 is a plan view of an image of a sheet of print data input to the image forming apparatus according to the embodiment of the present invention, in which imposition positions are moved. This is TrimBox information in PostScript. It is a figure for explaining a cutting position detection method from a register mark portion of an image. FIG. 2 is a plan view of an image of a print data input to a conventional image forming apparatus on a sheet. (a) shows the input default one page and (b) shows the six pages on one sheet. Indicates. 6 is a flowchart of an imposition/printing process in the case of multiple imposition in the image forming apparatus according to the embodiment of the present invention. 1A is a plan view of an image of a sheet of print data input to an image forming apparatus according to an embodiment of the present invention, in which FIG. (C) shows the state of imposition on the sheet, and (c) shows the state of imposing four pages on one sheet. Continuing from FIG. 15, (a) shows the stage when 5 pages are placed on one sheet, (b) shows the stage when 6 pages are placed on one sheet, (c) ) Indicates the stage when the cutting guide information is added. FIG. 4 is a plan view of an image on a sheet showing a result of imposition, a result of adding cutting guide information, and a cutting dimension to be simultaneously cut by the image forming apparatus according to the embodiment of the present invention. (a) is a plan view of a printed matter corresponding to the one shown in FIG. 17, (b) is a plan view of a printed matter at a stage where cutting has been completed three out of ten times, and (b) is seven out of ten times in total. In the plan view of the printed matter at the stage when the cutting is completed, it relates to the uncut page.

An embodiment of the present invention will be described below with reference to the drawings. The following is an embodiment of the present invention and does not limit the present invention.

An image including a register mark indicating a cutting position for cutting with a cutting machine 100 as shown in FIG. 1 is printed on a printing paper by the image forming apparatus. An image to be a product (printed matter) is printed in the register mark inside area Pm surrounded by the four-side cutting positions indicated by the register marks at the four corners. The rectangular size of the register mark area Pm is the image cutting size, which is the page size of the product. The cutting guide information indicating the cutting order, the setting direction, and the like is printed by the image forming apparatus on the register mark outside area Ps cut off by the cutting.

FIG. 2 shows a system configuration of the image forming apparatus.
This system has a copy function, a printer function, and a scan function, and includes a document reading device 21, a printer controller 22 that receives a print job and generates raster data, a storage device 23 that stores the received data, and a book. An operation input device 24 for operating the image forming apparatus, a printing device 25 for printing using CMYK toners, and a control device 26 for controlling these devices are configured. Alternatively, the document reading device 21 may be omitted.

FIG. 3 shows the configuration of the printer controller 22.
The printer controller 22 has a CPU 221, a RAM 222, an HDD 223, a NIC 224, and a Video I/F 225, and they are connected by a system bus. A buffer 226 for image transfer is connected to the Video I/F 225. The image transfer buffer 226 is a buffer for temporarily storing image data for transferring an image to the print engine 227.
Further, in the present embodiment, the printer controller 22 and the control device 26 are separate hardware, but the printer controller 22 and the control device 26 may be configured to operate with the same hardware.

FIG. 4 shows a connection form of the image forming apparatus (40). The image forming apparatus (40) is connected to a network via a network I/F, and a plurality of client PCs (41, 42) are connected to the network. The image forming apparatus (40) receives the print job sent from the client PC (41, 42) and performs print processing.

FIG. 5 shows a data flow of the printer controller 22.
In the printer controller 22, the print data (PDL: Page Description Language) transmitted from the PC (41, 42) via the network is received by the data receiving unit 51. The PDL includes PostScritp, PDF, TIFF images and the like. The received PDL has a cutting position detecting section (cutting position detecting means) 52 detect the cutting position and is transmitted to the interpreter section 53. The interpreter unit 53 generates CMYK plane image data from the PDL. The generated image data is subjected to a process of calculating the imposition position on the paper by an image imposition unit (imposition unit) 54, and the image data together with the imposition information passes through the image transfer unit 55 and the print engine 227. Sent to. In the print engine 227, the image data is impositioned according to the imposition information and printing is performed.
In addition, by executing the control program in the printer controller 22, the cutting direction determining unit, the cutting size calculating unit, the cutting size storing unit, the cutting guide unit, and the cutting order providing unit function, and the image forming apparatus described in the imposition below. -Perform print processing.

FIG. 6 shows a flowchart of the imposition/printing process of this embodiment. This flow is for single imposition.
When print data is received, the current cutting position is detected (S601). A method of detecting the cutting position will be described later.
When the registration mark 70 is included in the cutting position detection as shown in FIG. 7, the cutting dimensions 71 to 76 of the four sides are calculated (S602, S603). Since the cutting order has not been determined, six cutting dimensions occur in FIG. In FIG. 7, the letter size is an example of the image cutting size.

After the cutting dimensions of the original are calculated, the cutting dimensions m01 to m04 and the cutting order n01 to n04 of the previously printed print data as shown in FIG. 8 are acquired (S604), and the cutting dimensions of the previous time and this time are compared (S605). ). In FIG. 8, “n01”, “n02”, “n03”, and “n04” indicate the cutting order, and indicate that the edges in the vicinity thereof should be cut. The arrow indicates the set direction at that time. That is, the arrow and “n01”, “n02”, “n03”, and “n04” in the outside register mark area Ps are images to be printed. In the case of “n01” in the first cutting order, the line p01 is applied to the electric paper contact portion 101, the line q01 is set as the cutting position, and the size m01 is the cutting size. The second to fourth are the same. In FIG. 8, A4 is an example of the image cutting size.

As a result of the comparison, it is confirmed whether or not there is a side where the cutting position matches the previous time and whether the cutting position can match the previous time by shifting the image (S606).
When it is determined that it is possible to match the cutting position with the previous cutting position, the position to which the image is to be imposed and the relationship with the cutting position printed last time are calculated (S607).
In the example shown in FIG. 7 and FIG. 8, as shown in FIG. 9A, the width of the previous A4 image cutting size is X1, the length is Y1, and the margin dimensions are a1, b1, c1, respectively. d1, as shown in FIG. 9B, when the horizontal side of the image cutting size of this letter is X2 and the vertical side is Y2, it is indicated by "n01" and "n02" with priority given to the long cutting size. Two sides are subject to simultaneous cutting.
Imposition is performed according to the calculated imposition position (S608), and the calculated cutting order and sheet setting direction on the cutting machine are added to the register mark outside area as shown in FIG. 10 (S609). The calculated cutting size and cutting order are stored in the system (S610), and printing is performed (S611).

By imposing the cutting order “n01” “n02” having the same number as the cutting order “n01” “n02” of the previous A4 printed matter shown in FIG. 8 on the area outside the register mark of the letter printed matter as shown in FIG. An image showing which register mark and which register mark the set whose cutting dimensions are matched by the means is a set is added as cutting guide information. According to this, the user simultaneously cuts the “n01” side shown in FIG. 8 and the “n01” side shown in FIG. 10, and the “n02” side shown in FIG. 8 and the “n02” side shown in FIG. Cut simultaneously. As a result, the number of times of cutting can be reduced by two rather than cutting individually. Further, if the cutting position of the third kind of printed matter can be aligned with the sides of “n01” and “n02” shown in FIG. 10, it will be aligned with the sides of “n01” and “n02” shown in FIG. ×2=The number of cutting operations is reduced by 4 times. “N05” and “n06” shown in FIG. 10 also have the possibility of being simultaneously cut with the subsequent printed matter, and the simultaneous cutting as a continuous line, and the efficiency can be improved by reducing the number of cuttings.

As described above, the imposition unit is configured so that the trimming size of the imprinted print data stored in the trimming size storage unit and the trimming size of the unimprinted print data match at least one set. The imposition of the imprinted print data functions under different conditions between the imprinted imprinted imprinted imprinting paper and the imposition imprinted imprinted imprinted print data.

A method of detecting the cutting position will be described with reference to FIG.
In the case of PostSctipt or PDF data, information indicating the cutting position called TRIMBOX is held in the data. The TrimBox information indicates the cutting position with coordinate information on the lower left and upper right of the page.
The cutting position detecting unit 52 acquires the cutting position information by processing such as character string search before the interpreter unit 53 generates an image.

A detection method when image data such as TIFF is input will be described with reference to FIG.
As shown in FIG. 12A, the register mark portion is usually generated as data of C=M=Y=K=100% in order to detect misregistration and the like. Therefore, the cutting position is detected by detecting the coordinates of the pixel that matches the condition of C=M=Y=K=100% from the TIFF image.
In the example shown in FIG. 12(b), it is detected pixel by pixel from the leftmost pixel in sequence, and it is detected whether or not the condition of C=M=Y=K=100% is met, and detection is performed up to the matching position. Since the registration mark has two main lines, the inner registration mark and the outer registration mark, the second line that matches the condition is recognized as the cutting position. This process is similarly detected from the right end, the upper end, and the lower end, and four coordinates are detected. In the case of a TIFF image, it may be performed at the same time as the image expansion process in the interpreter unit 53.

Next, the case of multiple imposition will be described. Conventionally, as shown in FIG. 13(b), a document of an image cutting size as shown in FIG. 13(a) is printed on a long paper P10 in a page order for 6 pages. Attach and print. The number in the center of each surface indicates the number of pages (same in FIGS. 15 to 18). In this case, since the line q01 and the line q02 are aligned on a straight line, it is possible to cut simultaneously on 6 pages by cutting first. However, after that, two side edges (total 12 edges) of each page are individually cut, so that a total of 14 cutting operations are required.
This process is different from the above-mentioned process that aligns the cutting position with the previously printed data, so that when cutting a multi-sided printed document, it is possible to cut multiple sheets of different types simultaneously after cutting the multi-sided sheet once. It shows a method of imposition.

FIG. 14 shows a flowchart of the imposition/printing process in the case of multiple imposition.
First, it is confirmed whether the print data is a multiple-placement job (S1001).
If the job is a multiple imposition job, it is checked whether cutting information is included and the cutting position is detected (S1002).
When register marks are included in the cutting position detection, the cutting dimensions of the four sides are calculated (S1003, S1004).
As shown in FIG. 15A, it is assumed that the horizontal side of the image cutting size is X, the vertical side is Y, and the margin dimensions are a, b, c, and d, respectively.
As the first imposition process, half the number of impositions (three in the illustrated example) is impositioned on the paper with the left side justified (S1005, FIG. 15B). Left justification means imposing the first side on the left side of the sheet at the position of margin dimension a and the second and subsequent sides at the position of margin dimension a+b. When the number of imposition is odd, half + 1 is impositioned.
Next, one surface of the image is impositioned on the right side of the paper at the position of the margin dimension b (S1006, FIG. 15C).

Next, one image of the image is impositioned at the position of the margin dimension a with respect to the image that is right-justified (S1008, FIG. 16A).
The imposition of the remaining imposition images is repeated at the position of the margin dimension a+b with respect to the image impositioned in step S1008 (S1010, S1011, FIG. 16B).
Cutting guide information (n01 to n10) indicating the cutting order and the direction in which the paper is set on the cutting machine is added to the area outside the register marks and printed (S1012, S1013, FIG. 16C).
FIG. 17 shows the result of imposition, the result of adding cutting guide information, and the cutting dimensions (X+a+b, 2X+a+b, 2X+2a+2b, 3X+2a+2b) that form a group for simultaneous cutting. In FIG. 18, cutting lines q01 to q10 are added, and the numbers are the same in the cutting order. FIG. 18B shows two different intermediate products formed after cutting the cutting lines q01 to q03. The cutting lines q04 to q07 are cut simultaneously. Then, in the state shown in FIG. 18C, the cutting line q08 and the cutting lines q09 and q10 are cut, and the cutting is completed 10 times in total. It is possible to complete the entire cutting with a smaller number of cuttings than the conventional one (10 times as compared with the conventional 14 times).

As described above, the imposition unit is configured so that the trimming size of the imprinted print data stored in the trimming size storage unit and the trimming size of the unimprinted print data match at least one set. Imposition of imposition print data works under the condition that the imprinted imprinted print data and imprinted imposition imprinted print data are the same. ..
In addition, as described above, the imposition unit cooperates with the cutting order assigning unit, and a plurality of print data to be printed on the same printing paper has the cutting size matched with another leaf separated by one cutting (n03). Imposition is performed so that one and the other of the sets are separated from each other, so that after the one cutting (n03), simultaneous cutting (n04 to n07) of the matching set can be performed.
Further, as described above, the imposition unit cooperates with the cutting order assigning unit to perform imposition so that the page order is arranged in the order of being cut off by cutting.

Further, as described above, the cutting guide means, when cutting the cutting guide for each one cutting position at the one cutting position, is cut to the one cutting position which is cut off from the register mark inner region in contact with the one cutting position. It is given to the area outside the register mark that touches. For example, "n05" and an arrow indicating the set direction are printed in the margin between page 2 and page 4. "N05" can be printed on the same margin as "n04" and the cutting guide can be shown by a notation such as "cut this opposite side fifth", but it is cut off by cutting at the cutting position of "n04". This is because the cutting guide is lost when cutting the cutting position of "n05", and this is to prevent this. Further, when "n05" is printed in the margin between the 4th and 6th pages, it is difficult to indicate which side is to be cut, and there is an inconvenience such as confusion. Therefore, it is in contact with the one cutting position (line q05). “N05” is given to the area outside the register mark (the margin between the second page and the fourth page).
As described above, the cutting guide information can be clearly shown with a small number of notations.

As described above, according to the present embodiment, a plurality of different types of sheets, such as two sheets having a single imposition of different trimmed image sizes or two sheets having different layouts that can be trimmed from one having a large number of impositions are simultaneously trimmed. Thus, the productivity can be improved by reducing the number of cuttings.

70 Registration mark 100 Cutting machine 101 Electric paper applying part 102 Cutting position 103, 104 Fixed paper applying part 105 Cutting size m01-m04 Cutting size P Paper P10 Paper Pm Register mark inside area Ps Register mark outside area q01-q10 Cutting line

Claims (11)

A cutting position detecting means for detecting the cutting position indicated by the register mark from the print data,
Imposition means for imposing the print data on a print sheet,
Cutting direction determining means for determining a setting direction to a cutting machine when cutting the printing paper at each cutting position after imposition by the imposition means,
A cutting dimension calculating means for calculating a cutting dimension corresponding to the side of the printing paper in the setting direction from the cutting position for each cutting position;
A trimming dimension storage means for storing the trimming dimension,
The imposition means relates to two cutting positions to be arranged on different printing papers or to be arranged off the straight line on the same printing paper, and the cutting size of the already imprinted print data stored in the cutting size storage means. An image forming apparatus that impositions the unimposed print data so that the cut size of the unimposed print data matches at least one set. When the imposition unit impositions the unimposed print data so that the trimming size of the imprinted print data and the trimming size of the unimposed print data match, there are two or more types of imposition. The image forming apparatus according to claim 1, wherein when the attachment position is present, the cutting dimension is preferentially determined to be long. Equipped with a cutting guide means for giving the cutting guide information as a print image to the area outside the register marks.
3. The cutting guide means attaches, as cutting guide information, an image showing which register mark and which register mark are combined by the set of cutting dimensions by the imposition means. The image forming apparatus described. The image forming according to claim 3, wherein the cutting guide means gives an image indicating a setting direction to a cutting machine when cutting the printing paper at each cutting position, as cutting guide information corresponding to each cutting position. apparatus. Equipped with cutting order giving means for giving a cutting order to each cutting position,
The image forming apparatus according to claim 3, wherein the cutting guide means adds an image indicating the cutting order given by the cutting order giving means, as cutting guide information corresponding to each cutting position. The cutting guide means, when cutting the cutting guide for each one cutting position at the one cutting position, in the register mark outside area in contact with the one cutting position, which is separated from the register mark inside area in contact with the one cutting position. The image forming apparatus according to claim 3, wherein the image forming apparatus is provided. The imposition unit is configured such that the cutting size of the print data with the imposition stored in the cutting size storage unit and the cutting size of the print data without the imposition match in at least one set. Claim 1 to Claim that the imposition of the print data functions under the condition that the printing paper to which the imprinted print data is impositioned and the printing paper to which the unimprinted print data is impositioned are different. Item 7. The image forming apparatus according to any one of items 6. The imposition unit is configured such that the cutting size of the print data with the imposition stored in the cutting size storage unit and the cutting size of the print data with no imposition match in at least one set. 6. The imposition of print data functions under the condition that the print sheet to which the imprinted print data is imprinted and the print sheet to which the unimposed print data is imprinted are the same. Alternatively, the image forming apparatus according to claim 6, which cites claim 5. The imposition unit cooperates with the cutting order assigning unit so that, for a plurality of print data to be printed on the same printing sheet, one and the other of a set whose cutting size matches a separate leaf separated by one cutting The image forming apparatus according to claim 8, wherein impositions are made so as to be separated so that the same set of simultaneous cutting can be performed after the one cutting. 10. The image forming apparatus according to claim 8, wherein the imposition unit cooperates with the cutting order assigning unit to perform imposition so that the page order is arranged in the order of cutting by cutting. Computer
A cutting position detecting means for detecting the cutting position indicated by the register mark from the print data,
Imposition means for imposing the print data on a print sheet,
Cutting direction determining means for determining a setting direction to a cutting machine when cutting the printing paper at each cutting position after imposition by the imposition means,
A cutting dimension calculating means for calculating a cutting dimension corresponding to the side of the printing paper in the setting direction from the cutting position for each cutting position;
A control program for an image forming apparatus for causing the cutting size storage unit to store the cutting size, the control program comprising:
The imposition means relates to two cutting positions to be arranged on different printing papers or to be arranged off the straight line on the same printing paper, and the cutting size of the already imprinted print data stored in the cutting size storage means. And a control program of the image forming apparatus for imposing the unimposed print data so that the cut size of the unimposed print data matches at least one set.

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