JPH11133583A - Digital imposition processor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a digital imposition processor which enables digital imposition processing in a machine plate printing stage by using a computation post file transferred from a plate making state. SOLUTION: An imposition section 12 forms imposition data to each page in accordance with arrangement information. At this time, the imposition section 12 forms the adequate imposition data by properly rewriting the arrangement information by the instruction from a terminal 21 in order to deal with the kinds of a printing machine 31. A composition section 13 executes the positioning of the imposition data in a manner as to attain the optimal arrangement on the machine plate. This positioning may be executed while checking is made on the screen of the terminal 21. A printing information addition section 14 reads the accessories necessary at the time of printing from outside and executes arrangement processing. A halftone forming section 17 converts the computation post file subjected to the data processing described above to halftone data rearranging plural pages from the raster type data of every one page while adding the dot gain adjustment instructed from a control section 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital imposition processing apparatus, and more particularly, to a digital imposition processing apparatus in a plate / print processing step using digital data output from a plate making processing step. The present invention relates to a digital imposition processor.

[0002]

2. Description of the Related Art As is well known, a design process, a plate making process, and a printing plate / printing process are performed until a plan content received from a client is completed as a printed matter. In the design process, a composition designed in accordance with the contents of the plan is created. In the plate making process, a pattern, a line drawing, and a character string are arranged based on the composition to create a laid-out film. In the printing plate / printing process, an imposition process is performed on the film to create a printing plate, and then printing is completed by printing.

[0003] Among these processes, data processing from the design process to the plate making process is performed by analog technology and digital typified by DTP (Desk Top Publishing) due to the recent spread of computer technology and various plate making software. It has shifted to processing, and work has been streamlined. With this rationalization, in the design process,
Design and editing can be performed on the data digitized by the DTP processing, and digital composition data can be output. In the plate making process, a pattern, a line drawing, and a character string, which are also digital data, are arranged based on the digital underlay data, and the plate making process (Tr
ap processing, etc.) and RIP (Raster Image Processing)
And the like to obtain digital page data and output a film of a predetermined size and color proofing.

As described above, in the present situation, data is transferred from the plate making process to the plate / printing process using an intermediate medium called a film (see FIG. 9). As described above, one of the factors why the film is still used as an intermediate medium is that most of the plate making process and the plate / printing process are independent from each other (that is, the plate making process and the plate / printing process are independent of each other). This is because the processes are often handled by different companies.) Another reason is that using a film has the advantage that the duties of the plate making process and the printing plate / printing process are clearly distinguished, so that the responsibilities are clarified. Furthermore, in the plate / printing process, the film itself is used, and imposition processing in accordance with bookbinding rules is performed so that when one printed material is folded based on whether it is opened from the left or right, it will be finished with the correct number. It can be performed. For this reason, there is also an advantage that, in the case where the printing plate is repaired, it can be solved only in the printing plate / printing process.

[0005] However, as long as the film is used as an intermediate medium, it is not possible to shorten the process from the plate making process to the plate / printing process. Cannot be reduced.

Therefore, recently, as a method of shortening and rationalizing the process between the plate making process and the plate / printing process without using an intermediate medium called a film, a CTP (Compute
r toPlate) has been devised. This CTP
FIG. 10 shows a conventional processing system using such a method. In the CTP method, imposition processing originally included in the printing plate / printing process is incorporated in the plate making process, and up to imposition is performed in digital arithmetic processing in the plate making process. Then, the operation data obtained up to the imposition is halftone-dotted to directly produce a printing plate. As a result, there is no intermediate medium called a film between the plate making process and the plate / printing process,
It is possible to shorten the delivery time and reduce the cost of plate making by shortening the processing steps and eliminating the trouble of making a film in the plate making step.

[0007]

However, when the above-mentioned CTP is used in order to shorten and rationalize the plate making process and the plate / printing process, there is no intermediate medium such as a film, and the imposition process is not performed. It is taken into the process. For this reason, the CT
In a system using P, the following problems occur in reality because a certain correction work that was possible only in the printing plate / printing process is involved in the plate making process.

(1) At the stage of digital operation processing in the plate making process, a printing machine used in the plate / printing process must be specified. Because a printing plate is created directly from the operation data, the operation data must already match the printing press. For this reason, plate-making companies have only had to output a film as a final output without having to specify a printing press until now. However, in order to support CTP, a printing press must specify a printing press before performing arithmetic processing. A new problem arises. (2) It is necessary to provide a reliable calibration method. It is necessary to establish a digital proofing method on digital data, such as proofing using a film as an intermediate medium (chemical proofing using a film or proofreading performed after a printing plate is prepared). . (3) When the plate / printing process is corrected, it is necessary to return to the plate making process and perform the calculation again.
This is because the imposition processing is included in the plate making process, and therefore, as in the case of using a film, it is not possible to perform correction in units of film as in the imposition processing in the printing plate / printing process. (4) It is not possible to move or match colors in page units during printing. This is because the digital data after the operation in the plate making process is created not in page units but in imposed form. (5) A stable reprint cannot be supplied within a certain time. In relation to the above (3) and (4), reprinting of the printing plate cannot be performed in the printing plate / printing process, and it takes more time than necessary. (6) The dot gain of the printing plate cannot be adjusted. Since halftone dots are directly exposed on the printing plate in the printing plate / printing process based on digital data calculated in the plate making process, the dot cannot be corrected in the printing plate / printing process and the dot gain ( This means that the halftone dot area of the printing plate does not match the ink area of the printed matter). (7) Responsibilities of work between the plate making process and the plate / printing process cannot be clarified. Since the person in charge of the plate making process is in charge of one step before the plate making, it is necessary for the plate making process to deal with problems that occur in the plate / printing process.

Further, in order to increase the efficiency of the printing plate, conventionally, the printing contents are conveniently collected and imposed to form one surface of the printing plate (this is called "attachment"). ) Has been done. However, such a bonding operation can be performed on a film, but cannot be performed on a CTP.

[0010] For example, as a printing plate for imposing eight pages of film on one side, it is desired to create a printing plate in which four pages are pictorials of magazine A and the remaining four pages are pictorials of magazine B. There is. However, in CTP, since imposition processing is performed on the plate making process side, such an efficient plate cannot be created in the plate / printing process, and a problem arises in terms of plate efficiency. ing.

Similarly, when a printing plate / printing process side wishes to create a printing plate in which eight pages of film are imposed on one side, the printing plate has to be previously created when eight pages of film are gathered. Was completed. However, in CTP, 4
Even if two pages of operation data are sent, such processing cannot be performed. This is because the page data included in the calculation data at this point is a state where four pages are imposed on one surface. This is because the imposition arrangement of the page is different from imposing on one surface.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to overcome the drawbacks of the prior art by using a file output after calculation instead of a film output, and without imposing a burden on the plate making process. An object of the present invention is to provide a digital imposition processing apparatus which enables digital imposition processing.

[0013]

Means for Solving the Problems and Effects of the Invention A first aspect of the invention is to provide a digital surface for performing imposition processing in a printing plate / printing process in the form of electronic data using a post-computation file passed from a plate making process. Processing device, wherein the post-computation file is an R file obtained by removing shading processing from page data created corresponding to each of one or more pages.
RIP file created by performing IP operation, and RIP
A state in which the RIP file included in the post-operation file is arranged on one surface in accordance with the bookbinding rule by rewriting the arrangement information included in the post-operation file, including the arrangement information regarding the arrangement position of all or a part of the file. And imprinting means for performing shading processing on the raster data generated by the imposition means.

As described above, according to the first aspect of the present invention, an intermediate file received by the imposition processing apparatus uses a post-computation file, which is digital data including a RIP file and arrangement information, instead of a conventional film. ing. This allows
Digital imposition that performs imposition processing in accordance with bookbinding rules so that when a single printed matter is folded, the RIP file corresponding to each page is finished with the correct page number based on whether it is opened left or right. The processing device can be configured on the printing plate / printing process side.

A second invention is a digital imposition processing apparatus for performing imposition processing in a printing plate / printing step in the form of electronic data using two or more post-computation files passed from a plate making step, The file after the calculation is 1 or 2
The RIP file created by performing the RIP operation excluding the shading process on the page data created corresponding to each of the above pages, and the arrangement information on the arrangement position of all or a part of the RIP file are described. Including 2
Imposition means for creating raster data in which the RIP files of the two or more post-processing files are arranged on one surface in accordance with bookbinding rules by rewriting the arrangement information of the post-processing files, respectively. And shading means for performing shading processing on the raster data created by the imposition means.

As described above, according to the second aspect of the present invention, an intermediate file received by the imposition processing apparatus is not a film as in the related art, but a post-computation file which is digital data including a RIP file and arrangement information. Used above. This makes it possible to bind a RIP file corresponding to each of the pages included in the two or more post-processing files based on whether the book is opened on the left or on the right, so that when a single printed matter is folded, the book is finished with a correct page number. A digital imposition processing apparatus that performs imposition processing in accordance with rules can be configured on the printing plate / printing process side. For this reason, it is possible to flexibly cope with a printing plate attaching process, a change in the number of imposition pages when a printing plate is created, and the like.

According to a third aspect, in the first and second aspects, the dot gain can be adjusted by the shading means.

As described above, according to the third invention, in the first and second inventions, the dot gain can be adjusted for the printing plate, and the quality of the printed matter can be improved.

A fourth invention is characterized in that, in the first and second inventions, when raster data is created by the imposition means, print additional information necessary for printing is arranged in the raster data.

As described above, according to the fourth invention, in the first and second inventions, additional printing information such as registration marks, color patches, offset rotary press marks, and serial numbers required for printing is added to the raster data. The workability in the printing plate / printing process can be improved.

According to a fifth aspect of the present invention, in the first and second aspects, when the shading means performs the shading process on the raster data, a shading process for calibration in which color matching is performed is performed. .

As described above, in the fifth invention, in the first and second inventions, it is possible to perform a color matching process for matching the colors of the final print and the proof in order to perform the proof printing. Workability in the printing plate / printing process can be improved.

According to a sixth aspect, in the first and second aspects, when the shading means performs shading processing on the raster data, the RIP for one page constituting the raster data is provided.
It is characterized in that output adjustment is performed on the file.

As described above, in the sixth invention, in the first and second inventions, color matching and movement of one page of the RIP file constituting the raster data are performed in page units, Can be corrected, and a stable printing plate can be supplied within a certain period of time.

A seventh aspect of the present invention is a computer-readable recording medium recording a program to be executed in a computer apparatus, wherein page data created corresponding to each of one or more pages is shaded. A RIP file created by performing the RIP operation excluding the processing,
By rewriting the arrangement information of the post-operation file with respect to the post-operation file including the arrangement information on the arrangement position of all or a part of the RIP file, the RIP file of the post-operation file is in accordance with the bookbinding rule. An operation environment including an imposition step of creating raster data that is arranged on one surface and a shading step of performing a shading process on the raster data created by the imposition step is realized on a computer device. The program to do it.

An eighth invention is a computer-readable recording medium recording a program to be executed in a computer device, wherein page data created corresponding to each of one or more pages is shaded. A RIP file created by performing the RIP operation excluding the processing,
By rewriting the arrangement information of the two or more post-processing files with respect to the two or more post-processing files including the layout information on the layout positions of all or part of the RIP file, An imposition step of generating raster data in which the RIP files of the RIP files are arranged on one surface in accordance with bookbinding rules; and a shading step of performing a shading process on the raster data generated by the imposition step. A program for realizing the operating environment including the above on a computer device is recorded.

As described above, the seventh and eighth aspects of the present invention
A computer-readable recording medium on which a program capable of executing the functions of the first and second inventions on a computer is recorded. By executing this program, functions similar to those of the first and second inventions can be realized on a computer.

[0028]

FIG. 1 is a block diagram showing the configuration of a processing system using a digital imposition processing apparatus according to an embodiment of the present invention. In FIG. 1, the processing system of the present embodiment includes a design process, a plate making process, and a plate / printing process.

In the design process, the request of the client who is the ordering party is planned. Then, processing is performed by DTP in order to make the planned contents into composition data. In the plate making process, the pattern data is received from the design process,
After arranging a line drawing and a character string, a predetermined RIP operation is performed on the page data created through the prepress instruction, and a file obtained by performing the RIP operation on one or more pages is collected. Specific files (hereinafter referred to as
(Referred to as a file after the operation). Here, the predetermined RIP calculation processing refers to RIP processing in which shading is not performed. The post-computation file is substantially data that can be used as an intermediate medium, and is sent to the printing plate / printing process.
The post-computation file also serves as original data of the calibration output to the client. In the printing plate / printing process, an imposition process is performed upon receiving the file after the calculation, and the printing plate and the imposition proof are output. The contents performed in the imposition processing can be sequentially confirmed on the display device, and the processing can be instructed. Further, the post-computation file subjected to the imposition processing is stored as needed. This part of the imposition processing is performed by a digital imposition processing apparatus according to the present invention described later.

First, before describing a digital imposition processing apparatus according to an embodiment of the present invention, a data structure of a post-computation file used in the digital imposition processing apparatus will be described. FIG. 2 shows an example of the data structure of the post-computation file. FIG. 2 shows a post-computation file group corresponding to a case where the printed matter is folded into 16 pages. It is assumed that the result of imposition of the RIP file included in the post-computation file group is one-screen raster data. Is shown.

Referring to FIG. 2, a post-operation file 201 used in the digital imposition processing apparatus according to one embodiment of the present invention.
Is composed of two types of data. One is RIP
Processed data (hereinafter referred to as RIP file)
202, and the other is arrangement information 203 relating to the data. The RIP file 202 is a file of digital data obtained by calculating page data of one page on which a pattern, a line drawing, and a character string are arranged and for which a plate making instruction has been issued, and output the raster data. In this calculation process,
In order to enable dot gain adjustment in the subsequent printing plate / printing process, the output is performed in a raster format without shading processing (processing for converting a tone into large and small halftone dots). As shown in FIG. 2, one or more RIP files 202 are created for each page and included in one post-operation file 201. The number of RIP files 202 is
It can be arbitrarily determined according to the equipment and work contents used by the company or the like responsible for the plate making process. The arrangement information 203 is the RIP file 2 included in the post-computation file 201.
02 is data relating to the arrangement on the printing plate. In FIG. 2, four pages, that is, four RIP files 202
Is used as one post-computation file 201, and the arrangement information 203 has data on the arrangement of the RIP file 202 for four pages. The arrangement information 203 includes data such as the page size, the offset between the page origin and the finish origin, the direction of the RIP file, and the resolution of the RIP.

FIG. 3 shows an example of a specific configuration of the post-calculation file 201. FIG. 3A shows the post-operation file 2
FIG. 3B is a diagram showing a configuration of the arrangement information 203 in the post-computation file 201.
In this embodiment, the RIP file 202 and the arrangement information 203 are described as being independent from each other.
For example, the arrangement information 203 may be written in the header portion of the RIP file 202, respectively.

Next, a digital imposition processing apparatus according to the present invention for performing imposition processing digitally using the post-computation file 201 will be described with reference to FIG. FIG.
It is a block diagram showing composition of a digital imposition processing device concerning one embodiment of the present invention. In FIG. 4, a digital imposition processing apparatus 1 according to an embodiment of the present invention includes a compression / decompression unit 1.
1, an imposition unit 12, a printing plate unit 13, and a print information adding unit 1.
4, a control unit 15, and a color matching unit 16
And halftone generation units 17 and 18.

The digital imposition processor 1 is connected to the terminal 21, and displays on the terminal 21 the contents of the processing performed by the digital imposition processor 1. In addition, the digital imposition processor 1 changes the content of the process as appropriate in response to an instruction from the terminal 21. Further, the digital imposition processing apparatus 1 is connected to the printing machine 31 via the control unit 15. Thereby, the terminal 21 can know the information of the printing press 31 or can input the information of the printing press 31 from the terminal 21. Further, the digital imposition processing apparatus 1 is connected to an external storage device 41, and can record or read a file or data as needed. In addition, the digital imposition processor 1 is connected to the network line 51 and can also record and read out files and data.

When the received post-computation file 201 is compressed, the compression / decompression unit 11 decompresses the post-computation file 201 and returns the file to its original size. This compression may be performed when the post-computation file 201 is too large in the plate making process, and the compression / decompression unit 11 corresponds to this. The imposition unit 12 performs the RI based on the arrangement information 203 in the post-computation file 201.
An imposition such that the P file 202 is arranged according to a binding rule (hereinafter simply abbreviated as a binding rule) such that when a single printed matter is folded based on whether the P file 202 is opened to the left or right, the book is finished with a correct page number. Create data. Here, information about the printing press 31 necessary for creating imposition data is transmitted to the terminal 21 via the control unit 15 as described above. Therefore, the imposition unit 12 can always create appropriate imposition data by appropriately rewriting the arrangement information 203 in accordance with an instruction from the terminal 21. Breeding section 13
Connects the RIP files 202 of the plurality of post-processing files 201 and arranges the contents of the plurality of post-processing files 201 on one printing plate as one-surface raster data in accordance with the bookbinding rules. . The positioning performed by the intaglio unit 13 can be performed while checking on the screen of the terminal 21.

The print information adding unit 14 reads additional information necessary for printing depending on the type of the printing machine 31 from the outside, and performs the above-described operation so that the print additional information is arranged at a required position on the printing plate. This is added to the raster data of the surface. The print additional information corresponds to a color patch, an offset rotary press mark, a register mark, a serial number of a film, or the like used when measuring a color tone. The halftone dot generation unit 17 converts the raster data of one surface after the various processes described above into halftone dot data. Here, the halftone generation unit 17
Is a printing machine 31 according to an instruction from the control unit 15.
It is possible to perform dot gain adjustment suitable for. As described above, in the digital imposition processing apparatus according to the present invention, the shading processing is not performed during the RIP processing in the plate making process,
Since the halftone dots are generated in the printing plate / printing process, the dot gain can be adjusted. A printing plate is finally created from the halftone data generated by the halftone generation unit 17. In order to obtain a calibration output, the color matching unit 16 performs relative color matching on the raster data of one surface after the above-described various processes, and then performs a halftone generation unit 18.
Generates halftone data. The control unit 15 performs overall control of the digital imposition processing apparatus 1, performs communication with the printing press 31 to output, manages printing plates to be output, and creates ink control data.

FIG. 6 is a diagram showing a specific configuration of a digital imposition processing apparatus according to one embodiment of the present invention. In the digital imposition processor of FIG. 6, each step of the present invention is processed by a program. Compression / decompression unit 1 in the configuration of FIG.
1, imposition unit 12, printing plate unit 13, print information adding unit 14, color matching unit 16, and halftone dot generating units 17 and 18,
It is processed by a program developed on the main memory.
The network modem is connected to a network line (not shown), and can similarly receive information on a printing machine (not shown) connected to the network line. The CPU controls the entire digital imposition processor shown in FIG. The operation input device is an input device such as a keyboard and a mouse. The operator inputs the operation input device to instruct the imposition unit 12, the printing plate unit 13, and the print information adding unit 14 to perform operations. Further, the operation input device can also input information about the printing press and give an instruction to the printing press. The instruction is, for example, the size of a printing plate that can be used, the position of a printable area on the printing plate, or the size of a sheet to be used and the positional relationship between the sheet and the printing plate. About work contents,
It is displayed on a display device (monitor). The printer performs calibration output. The storage device is the external storage device 4 in FIG.
It functions as 1. The storage medium drive is used for storing data on the storage offline and reading a storage medium storing a program for functioning as a digital imposition processor.

A program for realizing such a function is as follows.
The computer device is provided in a form recorded on a readable recording medium. As typical computer-readable recording media, CD-ROM, MOD,
Flexible disk, portable hard disk, ROM
Cassettes, punch cards, barcodes, memory cards, and the like are included. Alternatively, a program for realizing such a function may be supplied to a computer device via a communication path.

Digital imposition processing apparatus 1 having the above configuration
Will be described below. FIG. 5 is a diagram showing an example of a process flow in a plate making / printing process including the plate making process and the digital imposition processing apparatus 1.

Referring to FIG. 5, in the prepress process, after receiving the DTP-processed digital underlay data output from the design process, arranging a picture, a line drawing, and a character string, the prepress is performed in pages. Perform necessary processing (step S40)
1). When the processing required for plate making is completed, an imposition instruction is issued so that each page is arranged in accordance with the bookbinding rule, and each page is divided into an arbitrary group (the same folding or the same surface group) (step S402). . RIP processing is performed based on this grouping (step S403),
RIP file 202 for each page in the group
Then, the post-computation file 201 including the arrangement information 203 for each group is created (step S404).
As described above, the RIP file 202 for each page is page data before halftone processing. When the processing in the above plate making process is completed, the post-computation file 202 becomes
It is sent to the printing plate / printing process by communication through a storage medium such as a recording medium or a network. At this time, if necessary, compression processing of the post-computation file 201 is performed.

In the printing plate / printing process receiving the post-computation file 201 from the plate making process, first, the imposition unit of the post-computation file 201 (the unit instructed in the above-described step S402) is one of the printing machines used for printing. It is determined whether the output unit matches the output unit of the surface (step S405). If the transmitted post-computation file 201 is compressed, it is a matter of course that the decompression process must be performed before the determination in step S405. This determination is made by the control unit 15 connected to the printing press 31, as described above. Here, if the imposition unit of the post-computation file 201 matches the output unit of one side of the printing press 31, the process proceeds to the next process. However, for example, if the post-computation file 201 prints with one page of four pages but the printing machine 31 performs printing with one page of eight pages, the printing machine 31 differs from the post-computation file 201. Of the file 201 after the calculation of
Processing is performed so that the surface is imposed on eight pages, and raster data of one surface is created (step S406).

Step S406 will be described in more detail with reference to FIG. FIG. 7 shows post-computation files 201A and 201 in which one page is imposed by four pages.
This shows a process of creating one-surface raster data 204A (only one surface) in which one surface is imposed by eight pages by performing imposition processing on B.

First, the digital imposition processor 1 arranges four RIP files 202A based on the arrangement information 203A included in the post-computation file 201A (FIG. 7).
(A)). Subsequently, based on the arrangement information 203B of the post-computation file 201B, the four RIP files 20
2B is arranged (FIG. 7B). After a while, breeding section 13
Is based on the names or extensions of the post-computation files 201A and 201B or information stored in the header.
It recognizes that the post-computation files 201A and 201B have a series of continuous page data. And breeding section 1
Reference numeral 3 denotes an offset between the page origin and the finish origin stored in the arrangement information 203A and 203B in order to create raster data of one surface in which one surface is imposed by eight pages in accordance with the bookbinding rule. rewrite. As a result, the two post-processing files 201A and 201B are configured as one-surface raster data 204A in which one surface is imposed by eight pages (FIG. 7C). This step S40
6, the digital imposition processing apparatus 1 can integrate the plurality of post-computation files 201 into one-surface raster data 204A.

In the printing plate process, printing plates of different types of work are mixed on one printing plate, and unconventional jobs or printing-convenient ones are collected into one printing plate surface to form one printing plate. There is a work called "garnishing" that aims to use plates efficiently. The digital imposition processing apparatus 1 can also cope with such an operation in step S406.

FIG. 8 shows a post-operation file 201C in which one page is imposed by four pages, and a plurality of RIPs in which one side is imposed by four pages but completely different from the post-operation file 201C. This figure shows a process of creating one-page raster data 204C in which one page is imposed by eight pages by performing imposition processing on the post-computation file 201D having the file 202D. Similarly, the digital imposition processor 1 uses the four RIP files 2 based on the arrangement information 203C of the post-computation file 201C.
02C is arranged (FIG. 8A). Subsequently, based on the arrangement information 203D of the post-computation file 201D, 4
8 RIP files 202D (FIG. 8
(B)). After that, the reproduction plate unit 13 executes the post-computation file 2
Based on the names or extensions of 01C and 201D or information stored in the header, the post-computation file 201
C and 201D recognize that they have page data of different job contents. And the breeding section 13 is 1
RIP file 20 although the surface is imposed on 8 pages
One-page raster data 204C having the imposition contents according to the independent bookbinding rule is created, with 2C having the imposition of 4 pages and the RIP file 202D having the imposition of 4 pages (FIG. 8C).

Next, in the printing plate / printing process, additional printing information necessary for printing is added to one-side raster data (step S407). After performing the above processing, the digital imposition processing apparatus 1 reconstructs the one-plane raster image instead of the page unit (step S408).

Step S405 or step S405
After the end of step 406, in the printing plate / printing process, the above step S
In 408, a halftone dot is generated from the reconstructed raster image (step S409). At the time of generating the halftone data, calibration of a printing machine that performs printing can be performed (step S415). Further, the dot gain can be adjusted according to the printing machine (step S416). A printing plate is created based on the halftone data generated by adding the dot gain adjustment (step S410). Then, printing is performed using this printing plate (step S411).

Finally, in the printing plate / printing process, the condition of the printed material is confirmed (step S412). As a result of this check, if there is no problem, the printing is continued as it is (step S413), but if there is a problem, the register adjustment and the exposure adjustment are performed on the RIP file 202 (step S414), and then, again. The raster image is reconstructed to create a printing plate (step S408).

As described above, the digital imposition processing apparatus according to one embodiment of the present invention performs analog imposition processing using a conventional film by a plurality of RIP files 20.
2 and a post-computation file 201 including the arrangement information 203 of these files. Therefore, the digital imposition processing apparatus according to an embodiment of the present invention has the same advantages as the conventional one, such as shortening of a processing step and reduction of labor in a plate making step, which are advantages of CTP, and shortening of delivery time and plate making cost. It is possible to simultaneously ensure the editability of the printing plate / printing process and clarify the responsibilities of the plate making process and the printing plate / printing process.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a processing system using a digital imposition processing apparatus according to an embodiment of the present invention.

FIG. 2 is a diagram showing an example of a data structure of a post-computation file in FIG.

FIG. 3 is a diagram illustrating an example of a specific configuration of a post-calculation file 201;

FIG. 4 is a block diagram illustrating a configuration of a digital imposition processing apparatus according to an embodiment of the present invention.

FIG. 5 is a diagram showing an example of a processing flow in a plate making / printing step including the plate making step and the digital imposition processing apparatus 1.

FIG. 6 is a block diagram showing a practical configuration of a processing system using the digital imposition processing apparatus according to one embodiment of the present invention.

FIG. 7 is a view showing an example in which after-calculation files 201A and 201B are imposed on four pages and one face is imposed on eight pages by imposition processing. FIG. 3 is a diagram showing a process of performing

FIG. 8 shows the post-operation files 201C and 201D having one page imposed on four pages and having no relation to each other, and imposition data 204 having one page imposed on eight pages by imposition processing. FIG. 3 is a diagram showing a process of performing

FIG. 9 is a block diagram showing one configuration of a processing system using a conventional film.

FIG. 10 is a block diagram showing one configuration of a processing system using a conventional CTP method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Digital imposition processing apparatus 11 ... Compression decompression part 12 ... Imposition part 13 ... Printing part 14 ... Print information addition part 15 ... Control part 16 ... Color matching part 17, 18 ... Halftone dot generation part 21 ... Terminal 31 ... Printing machine 41 ... Storage device 51 ... Network line 201, 201A to 201D ... After calculation file 202, 202A to 202D ... RIP file 203, 203A to 203D ... Arrangement information 204A, 204C ... Raster data

Claims (8)

[Claims] 1. A digital imposition processing apparatus for performing imposition processing in a printing plate / printing process in the form of electronic data using a post-operation file transferred from a plate making process, wherein the post-operation file is: Or, a RIP file created by performing a RIP operation excluding shading processing on page data created corresponding to each of two or more pages, and an arrangement relating to an arrangement position of all or a part of the RIP file And rewriting the arrangement information of the post-computation file, thereby obtaining the RIP of the post-computation file.
Imprinting means for creating raster data in which files are arranged on one surface in accordance with bookbinding rules; and shading means for performing shading processing on the raster data created by the imposition means. , Digital imposition processor. 2. A digital imposition processing apparatus that performs imposition processing in a printing plate / printing process in the form of electronic data using two or more post-computation files passed from a plate making process, wherein the post-computation file is used. A RIP file created by performing a RIP operation excluding shading processing on page data created corresponding to each of one or more pages, and an arrangement of all or a part of the RIP file. By rewriting the arrangement information of the two or more post-processing files, the RIP files of the two or more post-processing files are arranged on one surface in accordance with bookbinding rules. Imposition means for creating raster data in a state in which the raster data is And a background pattern means for performing background pattern processing Te, digital surface with processor. 3. The digital imposition processing apparatus according to claim 1, wherein the dot gain can be adjusted by the shading means. 4. The printing method according to claim 1, wherein when the raster data is created by the imposition means, additional print information required for printing is arranged in the raster data.
The digital imposition processing apparatus according to 1. 5. The method according to claim 1, wherein when the shading means performs the shading process on the raster data, a shading process for calibration in which color matching is performed is performed.
Or the digital imposition processor according to 2. 6. The method according to claim 1, wherein when the shading means performs the shading process on the raster data, an adjustment at the time of output is performed on the RIP file for one page constituting the raster data. Item 3. The digital imposition processor according to item 1 or 2. 7. A computer-readable recording medium on which a program to be executed in a computer device is recorded, wherein shading processing is removed from page data created corresponding to each of one or more pages. By rewriting the arrangement information included in the post-operation file, for the post-operation file including the RIP file created by performing the RIP operation and the arrangement information on the arrangement position of all or a part of the RIP file , The RIP of the post-computation file
Includes an imposition step of creating raster data in which files are arranged on one surface in accordance with bookbinding rules; and a shading step of performing a shading process on the raster data created by the imposition step. A recording medium in which a program for realizing an operating environment on the computer device is recorded. 8. A computer-readable recording medium on which a program to be executed in a computer device is recorded, wherein a shading process is removed from page data created corresponding to each of one or more pages. For two or more post-processing files including a RIP file created by performing a RIP operation and placement information on the placement positions of all or some of the RIP files, the two or more post-processing files have An imposition step of creating raster data in which the RIP files of the two or more post-processing files are arranged on one surface in accordance with bookbinding rules by rewriting the arrangement information, respectively; A shading step of performing a shading process on the raster data created by the step. A recording medium in which a program for realizing an operating environment on the computer device is recorded.