CN104417098A - Method and device for controlling color printing - Google Patents
Method and device for controlling color printing Download PDFInfo
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- CN104417098A CN104417098A CN201310371283.6A CN201310371283A CN104417098A CN 104417098 A CN104417098 A CN 104417098A CN 201310371283 A CN201310371283 A CN 201310371283A CN 104417098 A CN104417098 A CN 104417098A
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Abstract
The invention provides a method and device for controlling color printing. The method includes the steps: page lattice data generated after RIP processing of presswork through a raster image processor are differentiated according to colors the presswork belongs to and are concurrently stored in different files of a storage; the page lattice data are concurrently read from the different files of the storage, and are transmitted to a digital control system used for executing printing operation in a concurrency mode. By adoption of the method and device provided by the invention can effectively improve the printing speed of operation, reduce system configuration requirements, and save printing cost.
Description
Technical field
The present invention relates to printing technology, particularly relate to a kind of control method and device of colored printing.
Background technology
RIP(Raster Image Processor, raster image processor) be mainly used in various images, figure and the word etc. in presswork (as the widely used pdf document in the industry) space of a whole page to be construed to the lattice information that printer or film setter can record.
In existing single-colour ink-jetting digital printing system, the proportion shared in printing treatment time at whole print system in processing time of RIP of presswork is comparatively large, and the speed as the page dot matrix file reading storage from hard disk is far longer than presswork generates page dot matrix file speed through RIP.If the speed of RIP generation page dot matrix file does not catch up with the printing depletion rate of numerical control system, then whole digital printing system can produce the mistake of data underflow.For avoiding the generation of this mistake, usually can adopt and first the information that presswork generates after RIP process being saved as page dot matrix file, and after RIP process completes, start the method for printing again.
Under the development trend of ink jet digital press multicolor, the page dot matrix number generated after RIP can increase at double, as the twice of page dot matrix number when page dot matrix number during two color printing is single color printing, four times of page dot matrix number when page dot matrix number during four-color process is single color printing.Concrete, a digital presswork can be broken down into a series of color separation page dot matrix after the grating images process of RIP, every one page usually by the separate page dot matrix of corresponding four in blue or green (C), pinkish red (M), yellow (Y) and black (K) four look faces (referred to as C, M, Y and K page dot matrix, lower same) formed, afterwards, these four page dot matrixes are printed by the shower nozzle module giving numerical control system respectively.A concrete example, existing ink jet digital print system is realizing in four look duplex printing processes, first by produce after RIP process C, M, Y and K tetra-look page dot-matrix data write successively in the corresponding document of hard disk according to form, afterwards, from fixed disk file, read C, M, Y and K tetra-look page dot-matrix data successively, and send to numerical control system successively.
In the processing procedure of existing page dot-matrix data, no matter be storing process, or the process of reading, also or transmitting procedure, all adopt serial process mode, the processing speed of this processing mode is comparatively slow, easily causes the mistake producing data underflow in printing process.If in order to avoid the generation of this mistake, then can propose higher requirement to hard disk, thus the cost of whole digital printing system can be caused higher.
Summary of the invention
For the defect existed in prior art, the object of this invention is to provide control method and the device of colored printing.Adopt method and apparatus of the present invention effectively can improve the print speed printing speed of operation, reduce system configuration requirements, and save printing cost.
In order to realize above object, the control method of the colored printing that the embodiment of the present invention provides comprises: carried out distinguishing according to the color belonging to it by the page dot-matrix data that presswork produces after raster image processor RIP process and be stored in the different files of memory concurrently; From the different files of described memory, reading described page dot-matrix data concurrently, and adopting parallel mode to be transferred to numerical control system for performing printing operation.
The control device of the colored printing that the embodiment of the present invention provides mainly comprises: parallel memorizing module, and the page dot-matrix data for presswork being produced after raster image processor RIP process carries out distinguishing according to the color belonging to it and is stored in the different files of memory concurrently; Parallel reading transport module, for reading described page dot-matrix data concurrently from the different files of described memory, and adopting parallel mode to be transferred to numerical control system for performing printing operation.
Effect of the present invention is: stored respectively (as being stored on the controller of multiple stage look face) by the page dot-matrix data color separation of generation after RIP process being completed or color separation face, read page dot-matrix data from many places (as multiple stage look face controller) and transmit respectively during printing, achieving page dot-matrix data parallel memorizing and reading and transmission; Like this, while improve the print speed printing speed of operation, reduce the performance configuration requirement to system controller and look face controller, thus the industrial computer that the present invention can adopt configuration medium is as server, has effectively saved printing cost.In addition, flexible structure of the present invention, not only supports the ink jet printing that four looks two-sided, and can support existing four look one sides, double-colored two-sided and monochromatic two-sided ink jet printing simultaneously.
Accompanying drawing explanation
Fig. 1 is the two-sided ink jet digital printing process schematic diagrames of four looks of the embodiment of the present invention;
Fig. 2 is the data flowchart realizing four look duplex inkjet digital print methods of the embodiment of the present invention.
Detailed description of the invention
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail.
In ink jet digital print system, the present invention is directed to colored printing and propose a kind of concrete control method and device, as proposed a kind ofly to realize the digital printed control method of four look duplex inkjets and device for four look printeds on both sides, have that speed is fast, lower to hard disk requirement, printing cost is lower and the feature such as flexible structure.
The present invention makes full use of the separate feature of the page dot-matrix data of different colours that RIP generates, is being stored in the data file process of hard disk by page dot-matrix data, is have employed data parallel memory mechanism; Meanwhile, from the data file of hard disk, reading page dot-matrix data and be sent in the process of lower floor's numerical control system, have employed data parallel and read transmission mechanism; Namely the storage reading of the upper page dot array data of whole ink-jet printing system and transmission have employed distributed framework, read and transmission with the fast parallel storage realizing page dot-matrix data.Below in conjunction with Fig. 1, be that main example is described the technical scheme that the present invention proposes with the ink jet digital printing process that four looks two-sided.
In FIG, upper strata adopts four look duplex inkjet digital printing systems (also can be called page dot matrix storage system) of distributed structure/architecture primarily of system controller and look face controller composition.
System controller is mainly used in the processing procedure of the RIP of responsible presswork, and controls the command interaction that look face controller receives page dot-matrix data and control and lower floor's numerical control system.
If distinguished according to the color belonging to page dot-matrix data by look face controller, then look face controller can be divided into look face controller C, look face controller M, look face controller Y and look face controller K.The page dot-matrix data that look face controller produces after being mainly used in storing RIP process.Look face controller hold with the RIP of system controller and and the numerical control system of lower floor between kilomega optic fiber network can be adopted to be connected, to reduce the time of page dot-matrix data by Internet Transmission as far as possible.
Page dot-matrix data can be stored according to certain form in the corresponding document (look face file) of the hard disk of look face controller by the present invention, and above-mentioned form can be EJP form, and the look face file namely finally generated after RIP process can be EJP file.
The page dot-matrix data of generation after RIP process completes by system controller adopts the mode transmitted in parallel of multithreading to store to the controller of corresponding look face, like this, each look face controller only need store 1/4th of total page dot-matrix data, four look page dot-matrix datas write respective EJP file and also achieve parallel processing simultaneously, thus the memory time of page dot-matrix data can be reduced to 1/4th of the memory time of original page dot-matrix data; In like manner, the present invention is reading in the process of page dot-matrix data from EJP file, is to read page dot-matrix data from assorted face controller is parallel, and then, transmitted in parallel is to the numerical control system of lower floor.It can thus be appreciated that the storage reading of page dot-matrix data and transmitting procedure are according to the quantity parallel processing of look face, and total time is that original storage is read and transmit 1/4th of total time.
Hold the storing process of assorted face controller at page dot-matrix data from the RIP of system controller, kilomega optic fiber network should be adopted to transmit as far as possible, to improve the network transfer speeds of data, simultaneously, the mode of data buffer storage can be adopted, i.e. a certain amount of page dot-matrix data of first buffer memory, then disposablely to be transmitted by network, like this, both make use of the advantage of kilomega optic fiber Internet Transmission, also reduce the number of times of transmitted data on network between the RIP end of system controller and look face controller end and the number of times of command interaction simultaneously, further increase the speed of data transmission.
In the numerical control system of lower floor, have four shower nozzle modules (the shower nozzle module 1-4 namely in Fig. 1), and each shower nozzle module can simultaneously spray printing dichromatism, so in the print procedure that four looks two-sided, the CMYK page dot-matrix data in front is needed to be sent on the first two shower nozzle module, the CMYK page dot-matrix data of reverse side is sent on latter two shower nozzle module, by paper turning after front spray printing completes, then spray printing reverse side.Thus, in four look duplex inkjet print systems of distributed structure/architecture, in presswork after RIP process completes, can be processed accordingly by its positive and negative page identifying unit and look face file distributing unit (not shown in figure 1), so that by following for C and M(in front abbreviation C just with M just) page dot-matrix data is stored on the controller C of look face, by Y, just positive page dot-matrix data is stored on the controller M of look face with K, by C, the anti-and anti-page dot-matrix data of M is stored on the controller Y of look face, by Y instead and the anti-page dot-matrix data of K be stored on the controller K of look face; Meanwhile, the dichromatism page dot-matrix data on the controller of each look face is stored as the EJP file in two look faces, and the page dot-matrix data being convenient to multiple look can carry out the read-write operation walked abreast.
Upper strata adopts four look duplex inkjet digital printing systems of distributed structure/architecture, in the file distributing unit of look face, can carry out compatible processing to four look one sides, double-colored two-sided, monochromatic two-sided printing model; Namely look face file distributing unit can be determined in each mode, the look face controller that assorted page dot-matrix data stores and corresponding EJP file; As under four look one-sided printing mode, CMYK page dot-matrix data leaves in look face controller C, look face controller M, look face controller Y and look face controller K respectively, and each look face controller only need deposit an EJP file; For another example, under the printing model of double-colored two-sided (only having YK dichromatism), just positive page dot-matrix data is stored in look face controller Y and look face controller K Y respectively with K, and the anti-and anti-page dot-matrix data of K of Y is stored in look face controller C and look face controller M respectively; In addition, under the printing model of monochromatic two-sided (only having K look), can be regarded as a kind of special case of double-colored double printing mode, namely just anti-page dot-matrix data is all empty to Y with Y.
Above summary of the invention is realizing in four look duplex inkjet digital printing process, make use of the mechanism of many service parallel processings, adopts distributed structure/architecture, effectively the efficiency of existing four look duplex inkjet digital printing systems is improve four times.
Fig. 2 is a kind of data flowchart realizing four look duplex inkjet digital print methods that the embodiment of the present invention proposes, and concrete data flow is described as follows:
The PDF operation of step 1, submission printing, after the RIP process of system controller, generates CMYK page dot-matrix data.
The page dot-matrix data generated after step 2, RIP process, after the determination processing of positive and negative page identifying unit (the positive and negative identifying unit namely in Fig. 1), page dot-matrix data is divided into these eight kinds of page dot-matrix datas of front C, front M, front Y, front K, reverse side C, reverse side M, reverse side Y and reverse side K.
Step 3, above-mentioned eight kinds of page dot-matrix datas enter respective buffer unit (buffer unit in system controller) respectively and carry out buffer memory; Due to page dot-matrix data now also in the system controller, therefore, can be the spatial cache (as the spatial cache of 128M, like this, eight kinds of page dot-matrix datas need the spatial cache of 1G altogether) of often kind of pre-sizing of page dot-matrix data application in the system controller.
Step 4, when the spatial cache of the page dot-matrix data in certain look face is inadequate, then by look face file distributing unit, the page dot-matrix data in this look face can be sent to the look face controller of specifying by kilomega optic fiber network according to the look sequence of configuration, namely front C and front M page dot matrix are sent to look face controller C, front Y and front K page dot-matrix data are sent to look face controller M, reverse side C and reverse side M page dot-matrix data are sent to look face controller Y, and reverse side Y and reverse side K page dot-matrix data are sent to look face controller K.
After step 5, look face controller receive page dot-matrix data, according to EJP file format, dot array data is write in the corresponding EJP file of the hard disk of look face controller; As on the controller C of look face, front C and front M page dot-matrix data are stored in C_ejp and M_ejp file respectively, and these two files are separate; In like manner, on the controller M of look face, front Y and front K page dot-matrix data are stored in Y_ejp and K_ejp file respectively, on the controller Y of look face, reverse side C and reverse side M page dot-matrix data are respectively stored in C_ejp and M_ejp file, on the controller K of look face, reverse side Y and reverse side K page dot-matrix data are respectively stored in Y_ejp and K_ejp file.
So far, PDF operation is stored in hard disk (" EJP file " namely in Fig. 2) at the four look duplex inkjet digital printing systems that the page dot-matrix data produced after RIP process is just distributed formula framework and has suffered.When needs print this operation, only need 6 to read EJP file as follows, and be transferred to the numerical control system of lower floor.
Step 6, start print after, from the EJP file of assorted face controller, read the page dot-matrix data of dichromatism respectively, and the page dot-matrix data of reading be stored in buffer unit.Because each look face controller is independently arranged on an equipment (as server), so each look face controller all can apply for a certain size buffer unit, as applied for the buffer unit of 1G.
Step 7, when the buffer unit of certain look face controller is full, can by kilomega optic fiber network by coloured controller buffer unit in the page dot-matrix data that stores send to digital controller system, such as, page dot-matrix data in the buffer unit of look face controller C is sent to shower nozzle module 1, page dot-matrix data in the buffer unit of look face controller M is sent to shower nozzle module 2, page dot-matrix data in the buffer unit of look face controller Y is sent to shower nozzle module 3, page dot-matrix data in the buffer unit of look face controller K is sent to shower nozzle module 4, thus complete the printing of four looks two-sided.
Above embodiment completes in four looks two-sided ink jet digital printing process, after RIP process being completed, the page dot-matrix data color separation face of generation is stored on four look face controllers, data are read from four look face controllers respectively during printing, achieve page dot-matrix data parallel memorizing and reading, the print speed printing speed of operation is being improve while four times, reduce the performance configuration requirement to system controller and look face controller, thus the industrial computer that the present invention adopts configuration medium is as server, has effectively saved printing cost.Meanwhile, the flexible structure of the embodiment of the present invention, not only supports the ink jet printing that four looks two-sided, and can support existing four look one sides, double-colored two-sided and monochromatic two-sided ink jet printing simultaneously.
The control device of colored printing of the present invention mainly comprises: parallel memorizing module and parallel reading transport module; And colored printing is in the present invention when supporting positive and negative colored printing, this device can also comprise: positive and negative identifying unit.
Positive and negative identifying unit is mainly used in carrying out positive and negative judgement to the page dot-matrix data of the shades of colour obtained after RIP process.
Parallel memorizing module is mainly used in being carried out distinguishing according to the color belonging to it by the page dot-matrix data that presswork produces after raster image processor (RIP) process and being stored into concurrently in the different files of memory.
When device includes positive and negative identifying unit, parallel memorizing module is connected with positive and negative identifying unit; Parallel memorizing module can know the positive and negative judged result of positive and negative identifying unit, and parallel memory element stores in operating process in execution, the page dot-matrix data of shades of colour should be stored in the first corresponding buffer unit concurrently according to color and positive and negative.
The parallel transport module that reads is mainly used in reading page dot-matrix data concurrently from the different files that above-mentioned memory stores, and adopts parallel mode to be transferred to numerical control system for performing printing operation.
Above-mentioned parallel memorizing module mainly comprises: acquiring unit, parallel memory element, transmission unit and multiple look faces controller.
Acquiring unit is mainly used in presswork to carry out RIP process, thus can obtain the page dot-matrix data of shades of colour.
Parallel memory element is connected with acquiring unit, and the page dot-matrix data being mainly used in the shades of colour above-mentioned acquiring unit obtained is stored in the first buffer unit that its Color pair answers concurrently, and wherein the quantity of the first buffer unit is identical with the quantity of color.
Transmission unit is mainly used in, when existence stores the first full buffer unit, the page dot-matrix data stored in all first buffer units being sent to corresponding look face controller by network.
Multiple look faces controller is connected with transmission unit, be mainly used in receiving the next page dot-matrix data of transmission unit transmission, and the page dot-matrix data received is stored as the look face file of corresponding color, wherein, look face file is stored in the second buffer unit of look face controller.
The operation that above-mentioned each element specifically performs with reference to the associated description in said method embodiment, no longer can describe in detail at this.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention's scope required for protection, for a person skilled in the art, the present invention can have multiple change and change.All within spirit proposed by the invention and principle, any amendment done, equivalent replacement and improvement etc., all should be included within the present invention's scope required for protection.
Claims (6)
1. a control method for colored printing, is characterized in that, comprising:
The page dot-matrix data that presswork produces after raster image processor RIP process is carried out distinguishing according to the color belonging to it and is stored in the different files of memory concurrently;
From the different files of described memory, reading described page dot-matrix data concurrently, and adopting parallel mode to be transferred to numerical control system for performing printing operation.
2. method according to claim 1, is characterized in that, described page dot-matrix data presswork produced after raster image processor RIP process carries out distinguishing according to the color belonging to it and the different files being stored into memory concurrently comprise:
RIP process is carried out in presswork, obtains the page dot-matrix data of shades of colour;
Be stored in concurrently by the page dot-matrix data of described shades of colour in the first buffer unit that its Color pair answers, the quantity of wherein said first buffer unit is identical with the quantity of color;
When existence stores the first full buffer unit, the page dot-matrix data stored in all first buffer units is sent to corresponding look face controller by network;
The page dot-matrix data received is stored as the look face file of corresponding color by assorted face controller respectively, and wherein said look face file is stored in the second buffer unit of look face controller.
3. method according to claim 2, is characterized in that, when positive and negative colored printing is supported in described colored printing, described method also comprises:
Positive and negative judgement is carried out to the page dot-matrix data of the shades of colour obtained after RIP process; And the first buffer unit page dot-matrix data of described shades of colour being stored in concurrently correspondence comprises:
The page dot-matrix data of described shades of colour is stored in the first corresponding buffer unit concurrently according to color and positive and negative.
4. a control device for colored printing, is characterized in that, comprising:
Parallel memorizing module, the page dot-matrix data for presswork being produced after raster image processor RIP process carries out distinguishing according to the color belonging to it and is stored in the different files of memory concurrently;
Parallel reading transport module, for reading described page dot-matrix data concurrently from the different files of described memory, and adopting parallel mode to be transferred to numerical control system for performing printing operation.
5. device according to claim 4, is characterized in that, described parallel memorizing module comprises:
Acquiring unit, for RIP process is carried out in presswork, obtains the page dot-matrix data of shades of colour;
Parallel memory element, for being stored in concurrently by the page dot-matrix data of described shades of colour in the first buffer unit that its Color pair answers, the quantity of wherein said first buffer unit is identical with the quantity of color;
Transmission unit, for when existence stores the first full buffer unit, is sent to corresponding look face controller by the page dot-matrix data stored in all first buffer units by network;
Multiple look faces controller, for the page dot-matrix data received being stored as the look face file of corresponding color, wherein said look face file is stored in the second buffer unit of look face controller.
6. device according to claim 5, is characterized in that, when positive and negative colored printing is supported in described colored printing, described device also comprises:
Positive and negative identifying unit, for carrying out positive and negative judgement to the page dot-matrix data of the shades of colour obtained after RIP process;
And described parallel memory element is also for being stored into the page dot-matrix data of described shades of colour concurrently in the first corresponding buffer unit according to color and positive and negative.
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| CN115320265A (en) * | 2022-07-18 | 2022-11-11 | 北京博源恒芯科技股份有限公司 | Double-sided asynchronous printing control method and device and printer |
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