WO2012083887A1 - 双色双面打印方法和装置 - Google Patents

双色双面打印方法和装置 Download PDF

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Publication number
WO2012083887A1
WO2012083887A1 PCT/CN2011/084597 CN2011084597W WO2012083887A1 WO 2012083887 A1 WO2012083887 A1 WO 2012083887A1 CN 2011084597 W CN2011084597 W CN 2011084597W WO 2012083887 A1 WO2012083887 A1 WO 2012083887A1
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WO
WIPO (PCT)
Prior art keywords
color
page
dot matrix
color data
data
Prior art date
Application number
PCT/CN2011/084597
Other languages
English (en)
French (fr)
Inventor
李琳怡
黄渭平
Original Assignee
北大方正集团有限公司
北京大学
北京北大方正电子有限公司
北京北大方正技术研究院有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 北大方正集团有限公司, 北京大学, 北京北大方正电子有限公司, 北京北大方正技术研究院有限公司 filed Critical 北大方正集团有限公司
Priority to JP2013545036A priority Critical patent/JP5712301B2/ja
Priority to US13/997,667 priority patent/US9208414B2/en
Priority to EP11851952.9A priority patent/EP2657034B1/en
Publication of WO2012083887A1 publication Critical patent/WO2012083887A1/zh

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K15/00—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers
    • G06K15/02—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers
    • G06K15/18—Conditioning data for presenting it to the physical printing elements
    • G06K15/1867—Post-processing of the composed and rasterized print image
    • G06K15/1872—Image enhancement
    • G06K15/1878—Adjusting colours
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/21—Ink jet for multi-colour printing
    • B41J2/2132—Print quality control characterised by dot disposition, e.g. for reducing white stripes or banding
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/12—Digital output to print unit, e.g. line printer, chain printer
    • G06F3/1201—Dedicated interfaces to print systems
    • G06F3/1202—Dedicated interfaces to print systems specifically adapted to achieve a particular effect
    • G06F3/1211—Improving printing performance
    • G06F3/1215—Improving printing performance achieving increased printing speed, i.e. reducing the time between printing start and printing end
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/12—Digital output to print unit, e.g. line printer, chain printer
    • G06F3/1201—Dedicated interfaces to print systems
    • G06F3/1202—Dedicated interfaces to print systems specifically adapted to achieve a particular effect
    • G06F3/1218—Reducing or saving of used resources, e.g. avoiding waste of consumables or improving usage of hardware resources
    • G06F3/122—Reducing or saving of used resources, e.g. avoiding waste of consumables or improving usage of hardware resources with regard to computing resources, e.g. memory, CPU
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/12—Digital output to print unit, e.g. line printer, chain printer
    • G06F3/1201—Dedicated interfaces to print systems
    • G06F3/1223—Dedicated interfaces to print systems specifically adapted to use a particular technique
    • G06F3/1237—Print job management
    • G06F3/1244—Job translation or job parsing, e.g. page banding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/60—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for printing on both faces of the printing material
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/12—Digital output to print unit, e.g. line printer, chain printer
    • G06F3/1201—Dedicated interfaces to print systems
    • G06F3/1223—Dedicated interfaces to print systems specifically adapted to use a particular technique
    • G06F3/1237—Print job management
    • G06F3/125—Page layout or assigning input pages onto output media, e.g. imposition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/46—Colour picture communication systems
    • H04N1/56—Processing of colour picture signals

Definitions

  • the present invention relates to the field of printing, and in particular to a two-color two-sided printing method and apparatus. Background technique
  • RIP Raster Image Processor
  • page description files such as PDF files generated by typesetting software
  • raster imaging devices such as imagesetters, computer-to-plate platesetters, digital presses
  • Any job to be printed must be processed by RIP to generate a rasterized image dot matrix corresponding to each page (hereinafter referred to as a dot matrix page).
  • the print controller is installed on the host computer, completes the dot matrix of the print job read from the hard disk, sends print configuration parameters and print control commands, and prints data to control the printing process.
  • the digital control system (hereinafter referred to as the numerical control system) is responsible for receiving commands and print data sent by the host, and driving the print head of the printer to print according to the command.
  • the printout process of the inkjet digital press is:
  • the front-end layout software is arranged for the print job, and the RIP rasterization is used to generate a page dot matrix for the inkjet printer.
  • the host's print controller acquires the page dot matrix and sends it to the spray.
  • the numerical control system of the ink printing equipment is sent to the nozzle for printing by the numerical control system.
  • the print data sent to the CNC system is sent in units of pages, so the print controller preparation page dot matrix is performed in units of pages. As shown in Fig. 1, a page of data is ready to be sent to the CNC system.
  • the demand for two-color two-sided printing is mainly for government documents, only need to provide red and black, but the front and back of the substrate need to be printed.
  • the related technology realizes two-color double-sided printing, and uses the following print job sending process:
  • the printing job is divided into odd-numbered pages and even-numbered pages, and the printing controller first prepares an odd-numbered page dot matrix and sends it to the numerical control system (Digital Control System 1 printed matter)
  • the front two passes through the first two colors of the print head, and the CNC system prints the odd pages on the front side of the substrate.
  • the substrate passes through a Turn the mechanism.
  • the flip mechanism flips the substrate so that the back side of the substrate passes through the back two colors of the print head.
  • the print controller sends the dot matrix page to the numerical control system, and the numerical control system controls the print head to print the even page data on the back side of the substrate.
  • the present invention is directed to a two-color two-sided printing method and apparatus for solving the problem of low efficiency of the related art two-color double-sided printing processing.
  • a two-color two-sided printing method including: acquiring two pages of original four-color page dot matrix each time in a printing order; respectively extracting valid pages in two pages of original four-color page dot matrix One color data and second color data; respectively writing the first color data and the second color data respectively extracted into the first color data, the second color data, the third color data, and the first color of a new four-color page dot matrix Four color data.
  • a two-color double-sided printing apparatus including a print controller, comprising: an original page acquisition module, configured to acquire two pages of original four-color page dot matrix each time in a printing order; a block, configured to respectively extract valid first color data and second color data in a two-page original four-color page dot matrix; a new page generating module, configured to separately write the separately extracted first color data and second color data respectively The first color data, the second color data, the third color data, and the fourth color data of the dot matrix of the new four-color page are entered.
  • the two-color double-sided printing method and apparatus of the above embodiment of the present invention overcomes the problem that the related art two-color double-sided printing processing has low efficiency and improves printing efficiency because the two-page dot matrix is combined into one page dot matrix. . DRAWINGS
  • FIG. 1 is a schematic view showing a four-color print data processing procedure according to the related art
  • FIG. 2 is a flow chart showing a two-color two-sided printing method according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram showing a four-color print data processing process of a first page insertion value according to a preferred embodiment of the present invention
  • Figure 5 is a diagram showing a four-color print data processing process of the last page on an odd page in accordance with a preferred embodiment of the present invention
  • FIG. 6 is a schematic view showing a paper feed of two-color double-sided printing according to a preferred embodiment of the present invention
  • FIG. 8 is a schematic view showing a print controller according to an embodiment of the present invention
  • Figure 9 shows a schematic diagram of a numerical control system in accordance with an embodiment of the present invention. detailed description
  • Step S10 Obtain two pages of original four-color page dot matrix each time according to the printing order; Step S20, respectively extract valid first color data and second color data in the two pages of the original four-color page dot matrix;
  • step S30 the first color data and the second color data respectively extracted are respectively written into the first color data, the second color data, the third color data, and the fourth color data of the dot matrix of the new four-color page.
  • the existing printing software is processed for the CMYK four-color printing system, so if two spot colors are used for printing, in the dot matrix generated by two-color double-sided printing, only two colors of data are valid.
  • the double-sided printing of the related art requires one page of data to be printed per page, and n pages are printed, and n pages of data are transmitted, resulting in a large number of transmissions and low processing efficiency.
  • two invalid color data are discarded in advance, so that the two page lattices can be combined into one page dot matrix for processing, so that each time a full page of data is sent, the front and back pages can be printed on both sides.
  • the embodiment overcomes the problem that the related art two-color double-sided printing processing has low efficiency and improves printing efficiency.
  • two pages of the original four-color page dot matrix are acquired each time in the printing order from the first page.
  • the preferred embodiment can be used to print the first page to the front side of the two-color double-sided drawing, for example, printing a government official document, and only red and black colors are printed at the front end.
  • RIP rasterization When RIP rasterization generates dot matrix data, it is still stored in CMYK four colors, red data is placed in the M color plane, and black data is placed in the K color plane, that is, M color data and K color data are valid data, C color Data and Y color data are invalid data.
  • the print controller When the print controller prepares the data, it reads the four-color data into the buffer. After the first page of data is prepared, it does not send it immediately. Instead, it retains the M and K colors of the first page, and discards the C and Y data. Then the print controller reads the four-color data of the second page from the hard disk, and still retains the ⁇ 1, K colors, and discards the C and Y colors.
  • the M and K colors of the first page and the M and K colors of the second page are sent as four colors of one-sided page data to the numerical control system.
  • the first page here refers to the first page actually printed, not necessarily the first page generated by the typesetting.
  • the job to be printed by typesetting is set to n pages after RIP rasterization, and can be started from any page when actually printing. For example, if the user wants to print the mth to nth pages, the mth page data read from the hard disk is the first page described above, and the m+1th page data is the second page data, and so on.
  • each time two pages of the original four-color page dot matrix are acquired in the printing order before: further comprising: acquiring the first page of the original four-color page dot matrix; generating the first page of the new four-color page dot matrix , the first color data and the second color data are all set to a null value, and the first color data and the second color data of the original four-color page dot matrix of the first page are written into the first page of the new four-color page dot matrix.
  • the third color data and the fourth color data Due to special needs, it is sometimes necessary to print the first page of data on the reverse side and the front side as a blank, the preferred embodiment can satisfy this need.
  • FIG. 4 is a diagram showing a four-color print data processing procedure for a home page insertion value in accordance with a preferred embodiment of the present invention.
  • the first two colors of the storage space are directly given to 0 data when preparing the data, and then the M and K colors of the first page data are placed in the last two colors of the storage space.
  • the method further comprises: if acquiring two pages of original each time in the order of printing The four-color page dot matrix, and the last remaining single page original four-color page dot matrix, the last page of the new four-color page dot matrix is generated, and the first color data and the second color data of the last remaining single page original four-color page dot matrix are generated. The first color data and the second color data of the last four-color page dot matrix are written, and the third color data and the fourth color data of the last four-color page dot matrix are all set to null values.
  • the preferred embodiment can handle the case where the last page is a single page, falling on the front side.
  • Figure 5 is a diagram showing the four-color print data processing process of the last page on an odd page in accordance with a preferred embodiment of the present invention.
  • the data generated by the current end layout software is an odd number of pages, at this time, only the first two colors of the storage space have data.
  • the latter two colors of the storage space are assigned 0 data, and then sent to the numerical control system. .
  • the method further comprises: acquiring a new four-color page dot matrix per page in a printing order; extracting first color data and second color data of the new four-color page dot matrix, and printing to the first side of the printing substrate; The third color data and the fourth color data of the dot matrix of the new four-color page are printed on the second side of the substrate; wherein, the pigment of the first color of the printing device and the pigment of the third color are set as the first special A color (for example, red) pigment, which is a pigment of a second color of the printing device and a pigment of a fourth color (for example, black).
  • red for example, red
  • the related art requires two different printing processes for single-sided printing and double-sided printing, and the interface protocol of the host printing controller and the numerical control system needs to be modified, and the need for flexible switching of single-sided printing cannot be realized.
  • the interface protocol of the host printing controller and the numerical control system needs to be modified, and the need for flexible switching of single-sided printing cannot be realized.
  • users need to print single-sided data on the same platform, and sometimes print double-sided data. If you want to use two sets of print controllers and CNC system, it is obviously costly.
  • the numerical control system does not distinguish between single-sided printing and double-sided printing, and data reception and printing are still performed according to single-sided printing.
  • the substrate first passes through the first two colors of the print head, and prints the M and K color data of the first page on the front side of the substrate; then the substrate passes through the flip mechanism, and the back side of the substrate passes through the back two colors of the print head, and the numerical control system
  • the M, K color data of the second page is printed on the substrate, thereby achieving two-color double-sided printing, which significantly reduces printing costs.
  • Figure 6 shows a paper feed of two-color two-sided printing in accordance with a preferred embodiment of the present invention.
  • the diagram includes the following steps:
  • Set the two-color duplex printing mode including: Replace the four-color inks C, M, Y, K with two colors of red, black, red, and black, and pass the substrate through the turning mechanism to realize that the substrate can be positive and negative. Print; the user selects two-color duplex printing on the interface.
  • the control system allocates four colors of storage space.
  • the front side of the substrate passes through the front two-color nozzles. After the front side printing is completed, the flipping mechanism is used to reach the position of the rear two-color nozzles, thereby completing the printing on the back side.
  • the two colors of the CNC system should be large enough to depend on the distance the substrate passes from the first two color nozzles to the latter two color nozzles.
  • the size of the two-color nozzle monochrome buffer is ⁇
  • the size of the buffer required for each page of the job is ⁇
  • the distance that the substrate passes from the first two color nozzles to the latter two color nozzles is the length of the n-page job, then the buffer The limit of ⁇ is: A>n*B. If the cache A is not enough, the correct print will not be completed.
  • the user selects whether to print the first page on the front or the back in the interface.
  • step 6 If the user chooses to print the first page on the reverse side, set the first two color data spaces of the storage space to 0, and then proceed to step 6.
  • control system reads a page of four-color page dot matrix data from the hard disk, and then puts the M and K colors of the four-color dot matrix data into the allocated storage space. Two-color area.
  • the print controller reads a page of four-color page dot matrix data from the hard disk, and puts the ⁇ 1 and K colors into the latter two color areas of the storage space.
  • the print controller sends the page dot matrix in the storage space to the numerical control system; the numerical control system starts printing after receiving a complete page of data, and the printing process is the same as the one-sided printing.
  • FIG. 8 shows a schematic diagram of a print controller according to an embodiment of the invention, comprising:
  • the original page obtaining module 10 is configured to acquire two pages of the original four-color page dot matrix each time in the printing order;
  • the extracting module 20 is configured to respectively extract valid first color data and second color data in the two pages of the original four color page dot matrix
  • the new page generating module 30 is configured to respectively write the first color data and the second color data respectively extracted into the first color data, the second color data, the third color data, and the fourth color of the page of the new four-color page. Color data.
  • This embodiment improves printing efficiency.
  • the original page obtaining module is configured to acquire two pages of the original four-color page dot matrix each time in the printing order from the first page, or obtain two pages of the original four-color page dot matrix each time in the printing order from the second page;
  • the print controller further includes: a plug-in module, configured to obtain the first page of the original four-color page dot matrix, if the original page obtaining module obtains two pages of the original four-color page dot matrix each time in the printing order from the second page.
  • the first four-color page dot matrix, the first color data and the second color data are all set to null values, and the first color data and the second color data of the original four-color page dot matrix of the first page are written.
  • the first page of the new four-color page dot matrix of the third color data and the fourth color data for acquiring two pages of the original four-color page dot matrix each time in the printing order, the last remaining single page original four colors
  • the page dot matrix generates the last page of the new four-color page dot matrix, and writes the first color data and the second color data of the last remaining single page original four-color page dot matrix into the last page of the new four-color page dot matrix.
  • the first color data and second color data, the last page of the new four-color page data and the third color dot of the fourth color data is set to all null.
  • the last page is for single page printing.
  • the present two-color double-sided printing apparatus further includes a digital control system
  • FIG. 9 is a schematic diagram of a numerical control system according to an embodiment of the present invention, which includes:
  • a new page obtaining module 40 configured to obtain a new four-color page dot matrix per page in a printing order
  • the front print module 50 is configured to extract the first color data and the first color of the new four-color page dot matrix Two-color data, and printed to the first side of the substrate;
  • a back print module 60 configured to extract third color data and fourth color data of a new four-color page dot matrix, and print to the second side of the substrate;
  • the pigment of the first color of the printing device and the pigment of the third color are set as the pigment of the first spot color
  • the pigment of the second color of the printing device and the pigment of the fourth color are set as the pigment of the second spot color
  • the preferred embodiment significantly reduces printing costs.
  • the apparatus further comprises: an inverting mechanism for inverting the substrate before printing the second side after printing the first side.
  • the method and apparatus of the present invention improve printing efficiency, and the sleeve printing system provides great convenience to the user and expands the scope of application of the printing machine.
  • modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device so that they may be stored in the storage device by the computing device, or they may be separately fabricated into individual integrated circuit modules, or Multiple modules or steps are made into a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.

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  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Quality & Reliability (AREA)
  • Mathematical Physics (AREA)
  • Record Information Processing For Printing (AREA)
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Description

技术领域
本发明涉及印刷领域， 具体而言， 涉及双色双面打印方法和装置。 背景技术
RIP ( Raster Image Processor, 光栅图像处理器 )用于把页面描述文 件（如排版软件生成的 PDF文件）转换为光栅图像， 并在光栅成像设 备（如照排机、 计算机直接制版机、 数码印刷机）上输出。 任何一个待 打印作业都必须经过 RIP处理，生成每一个页面对应的光栅化图像点阵 (下面都简称为点阵页面）。
打印控制器安装在主机上， 完成从硬盘读入打印作业的页面点阵， 发送打印配置参数和打印控制命令以及打印数据， 实现打印流程的控 制。
数字控制系统（ Digital Control System , 下面都简称为数控系统 ) 负责接收主机发送的命令和打印数据，并且根据命令驱动印刷机的喷头 进行打印。
喷墨数字印刷机的打印输出流程是： 前端排版软件排好待打印作 业， 经由 RIP光栅化后生成供喷墨印刷机可用的页面点阵， 主机的打印 控制器获取页面点阵， 发送到喷墨印刷设备的数控系统， 再由数控系统 发送给喷头进行打印。
发送到数控系统的打印数据是以页为单位进行发送的， 因此打印控 制器准备页面点阵是以页为单位进行的， 如图 1所示， 一页数据准备好 之后才往数控系统发送。
双色双面打印的需求主要是针对政府公文， 只需要提供红黑两色， 但是承印物的正反面都需要印刷。
相关技术实现双色双面印刷， 釆用如下的打印作业发送流程： 打印 作业分为奇数页和偶数页， 打印控制器先准备奇数页的页面点阵， 发送 给数控系统（ Digital Control System 1 印物首先正面经过打印喷头的 前两色， 数控系统将奇数页打印在承印物的正面。 然后承印物穿过一个 翻转机构。 翻转机构将承印物翻转后， 使承印物背面穿过打印喷头的后 两色。 打印控制器将偶数页的页面点阵发送给数控系统， 数控系统再控 制喷头将偶数页数据打印在承印物的背面。
通过以上的描述可以发现，相关技术的双面打印每打印一页需要发 送一页数据， 导致发送次数较多， 处理效率较低。 发明内容
本发明旨在提供一种双色双面打印方法和装置， 以解决相关技术双 色双面打印处理效率较低的问题。
在本发明的实施例中， 提供了一种双色双面打印方法， 包括： 按照 打印顺序每次获取两页原始四色页面点阵； 分别提取两页原始四色页面 点阵中的有效的第一色数据和第二色数据； 将分别提取的第一色数据和 第二色数据分别写入一页新四色页面点阵的第一色数据、 第二色数据、 第三色数据和第四色数据。
在本发明的实施例中， 提供了一种双色双面打印装置， 包括打印控 制器， 其包括： 原始页面获取模块， 用于按照打印顺序每次获取两页原 始四色页面点阵； 提 莫块， 用于分别提取两页原始四色页面点阵中的 有效的第一色数据和第二色数据； 新页面生成模块， 用于将分别提取的 第一色数据和第二色数据分别写入一页新四色页面点阵的第一色数据、 第二色数据、 第三色数据和第四色数据。
本发明上述实施例的双色双面打印方法和装置因为将每两个页面点 阵合并为一个页面点阵来处理， 所以克服了相关技术双色双面打印处理 效率较低的问题， 提高了打印效率。 附图说明
此处所说明的附图用来提供对本发明的进一步理解， 构成本申请的 一部分， 本发明的示意性实施例及其说明用于解释本发明， 并不构成对 本发明的不当限定。 在附图中：
图 1示出了根据相关技术的四色打印数据处理过程的示意图； 图 2示出了根据本发明实施例的双色双面打印方法的流程图； 图；
图 4示出了根据本发明优选实施例的首页插空值的四色打印数据处 理过程的示意图；
图 5示出了根据本发明优选实施例的最后一页在奇数页的四色打印 数据处理过程的示意图；
图 6示出了根据本发明优选实施例的双色双面打印的走纸示意图； 图 8示出了根据本发明实施例的打印控制器的示意图；
图 9示出了根据本发明实施例的数控系统的示意图。 具体实施方式
下面将参考附图并结合实施例， 来详细说明本发明。 包括：
步骤 S 10, 按照打印顺序每次获取两页原始四色页面点阵； 步骤 S20,分别提取两页原始四色页面点阵中的有效的第一色数 据和第二色数据；
步骤 S30,将分别提取的第一色数据和第二色数据分别写入一页 新四色页面点阵的第一色数据、 第二色数据、 第三色数据和第四色 数据。
现有的打印软件都是针对 CMYK四色打印系统进行处理的， 因 此如果釆用两个专色进行打印， 在双色双面打印生成的页面点阵中， 仅仅两个颜色的数据是有效的。 而相关技术的双面打印每打印一页 需要发送一页数据， 打印 n页， 得发送 n页数据， 导致发送次数较 多， 处理效率较低。 本实施例中预先抛弃两个无效颜色的数据， 从 而可以将两个页面点阵合并为一个页面点阵来处理， 这样每发送一 整页数据， 就可以双面打印正面和反面两个页面， 即打印 n 页， 只 需发送 n/2页数据， 减少了一半的发送次数。 由此可见， 本实施例克 服了相关技术双色双面打印处理效率较低的问题， 提高了打印效率。 优选地， 从第一页开始按照打印顺序每次获取两页原始四色页 面点阵。 本优选实施例可以用于将第一页打印到正面的双色双面打 示意图， 例如打印政府公文， 在前端排版的时候只有红黑两色。 由
RIP光栅化生成点阵数据时， 仍旧按照 CMYK四色进行存储， 将红 色数据放到 M色面中， 黑色数据放到 K色面中， 即 M色数据和 K 色数据是有效数据， C 色数据和 Y 色数据是无效数据。 打印控制器 在准备数据时， 将四色数据读入緩存， 在准备好第一页数据之后， 并不立即发送， 而是保留第一页的 M、 K色，将 C、 Y两色数据抛弃； 然后打印控制器从硬盘读入第二页的四色数据， 仍然保留 ^1、 K色， 抛弃 C、 Y色。 然后将第一页的 M、 K色和第二页的 M、 K色当成 单面一页数据的四色往数控系统发送。 此处的第一页， 是指实际打 印的第一页， 而不一定是指排版生成的第一页。 排版生成的待打印 作业经由 RIP光栅化后设为 n页， 实际打印时可以从任意一页开始。 例如用户想打印第 m到第 n页的作业， 则从硬盘读入的第 m页数据 则为上述的第一页， 而第 m+1 页数据则为上述第二页数据， 依此类 推。
优选地， 从第二页开始按照打印顺序每次获取两页原始四色页 面点阵， 在此之前还包括： 获取第一页原始四色页面点阵； 生成第 一页新四色页面点阵， 将其中的第一色数据和第二色数据全部设置 为空值， 将第一页原始四色页面点阵的第一色数据和第二色数据写 入第一页新四色页面点阵的第三色数据和第四色数据。 由于特殊需 要， 有时候需要将第一页数据打印在反面， 正面为空白， 本优选实 施例可以满足该需求。
图 4 示出了根据本发明优选实施例的首页插空值的四色打印数 据处理过程的示意图。 给用户提供一个选项， 可选择第一页打印在 正面还是反面。 当用户选择打印在反面时， 在准备数据时将存储空 间的前两色直接给成 0数据， 然后将第一页数据的 M、 K色放在存 储空间的后两色。
优选地， 本方法还包括： 如果按照打印顺序每次获取两页原始 四色页面点阵， 最后剩余单页原始四色页面点阵， 则生成最后一页 新四色页面点阵， 将最后剩余单页原始四色页面点阵的第一色数据 和第二色数据写入最后一页新四色页面点阵的第一色数据和第二色 数据， 将最后一页新四色页面点阵的第三色数据和第四色数据全部 设置为空值。 本优选实施例可以处理最后一页是单页， 落在正面的 情况。
图 5 示出了根据本发明优选实施例的最后一页在奇数页的四色 打印数据处理过程的示意图。 当前端排版软件生成的数据是奇数页 时， 此时存储空间只有前两色有数据， 为了保证数控系统接收数据 的完整性， 将存储空间的后两色赋值为 0 数据， 然后发送给数控系 统。
优选地， 本方法还包括： 按照打印顺序获取每页新四色页面点 阵； 提取新四色页面点阵的第一色数据和第二色数据， 并打印到承 印物的第一面； 提取新四色页面点阵的第三色数据和第四色数据， 并打印到承印物的第二面； 其中， 预先将打印设备的第一色的颜料 和第三色的颜料设置为第一专色 （例如红色） 的颜料， 将打印设备 的第二色的颜料和第四色的颜料设置为第二专色 （例如黑色） 的颜 料。
相关技术对于单面打印和双面打印需要两套不同的打印流程， 并且需要修改主机打印控制器和数控系统的接口协议， 无法实现单 双面打印灵活切换的需求。 然而， 有时候用户需要在相同的平台下 时而打印单面数据， 时而打印双面数据， 如果要釆用两套打印控制 器和数控系统， 显然成本较高。
而本优选实施例中， 数控系统并不区分单面打印和双面打印， 依旧按照单面打印进行数据接收和打印。 承印物首先经过打印喷头 的前两色， 将第一页的 M、 K 色数据打印在承印物的正面； 然后承 印物经过翻转机构， 承印物的背面经过打印喷头的后两色， 数控系 统再将第二页的 M、 K 色数据打印在承印物上， 从而实现了双色双 面打印， 这显著地降低了打印成本。
图 6 示出了根据本发明优选实施例的双色双面打印的走纸示意 图， 在打印完第一面之后， 将承印物翻转， 然后打印第二面。 图， 包括以下步骤：
1、 设置双色双面打印模式， 包括： 将四色墨水 C、 M、 Y、 K更 换为两色红、 黑和红、 黑， 将承印物穿过翻转机构， 以实现承印物 可以正、 反面打印； 用户在界面选择进行双色双面打印。
2、 控制系统分配四色存储空间。 承印物的正面经过前两色喷头 完成正面打印之后， 要经过翻转机构才能到达后两色喷头所在位置， 从而完成背面的打印。 为了将正、 反面套印在一起， 并且正确完成 打印， 数控系统后两色的緩存要足够大， 该大小取决于承印物从前 两色喷头到后两色喷头所经过的距离。 设数控系统后两色喷头单色 緩存大小为 Α, 作业每页单色需要的緩存大小为 Β, 承印物从前两色 喷头到后两色喷头所经过的距离为 η页作业的长度， 则緩存 Α的限 制为： A>n*B。 如果緩存 A不够， 将无法完成正确打印。
3、 用户在界面选择将第一页打印在正面还是反面。
4、 如果用户选择将第一页打印在反面， 则将存储空间的前两色 数据空间置 0, 然后进入步骤 6。
5、 如果用户选择第一页打印在正面， 则控制系统从硬盘读入一 页四色的页面点阵数据， 然后将四色点阵数据的 M、 K 色放到分配 的存储空间中的前两色区域。
6、 判断是否有下一页数据。
7、 如果有后续页数据， 打印控制器从硬盘读入一页四色的页面 点阵数据， 将其中的 ^1、 K色放到存储空间的后两色区域。
8、 如果没有后续页， 则将存储空间的后两色区域数据置 0。
9、 当存储空间的四色都准备好时， 打印控制器往数控系统发送 存储空间中的页面点阵； 数控系统接收到完整的一页数据之后启动 打印， 打印过程和单面打印相同。
10、 判断是否有后续数据， 如有则重复步骤 5〜10； 没有后续数 据则打印结束。
本发明的一个实施例提供了一种双色双面打印装置， 包括打印 控制器， 图 8 示出了根据本发明实施例的打印控制器的示意图， 其 包括：
原始页面获取模块 10, 用于按照打印顺序每次获取两页原始四 色页面点阵；
提取模块 20 , 用于分别提取两页原始四色页面点阵中的有效的 第一色数据和第二色数据；
新页面生成模块 30 , 用于将分别提取的第一色数据和第二色数 据分别写入一页新四色页面点阵的第一色数据、 第二色数据、 第三 色数据和第四色数据。
本实施例提高了打印效率。
优选地， 原始页面获取模块用于从第一页开始按照打印顺序每 次获取两页原始四色页面点阵， 或者从第二页开始按照打印顺序每 次获取两页原始四色页面点阵； 打印控制器还包括： 插页首模块， 用于如果原始页面获取模块从第二页开始按照打印顺序每次获取两 页原始四色页面点阵， 则获取第一页原始四色页面点阵， 生成第一 页新四色页面点阵， 将其中的第一色数据和第二色数据全部设置为 空值， 将第一页原始四色页面点阵的第一色数据和第二色数据写入 第一页新四色页面点阵的第三色数据和第四色数据； 补页尾模块， 用于如果按照打印顺序每次获取两页原始四色页面点阵， 最后剩余 单页原始四色页面点阵， 则生成最后一页新四色页面点阵， 将最后 剩余单页原始四色页面点阵的第一色数据和第二色数据写入最后一 页新四色页面点阵的第一色数据和第二色数据， 将最后一页新四色 页面点阵的第三色数据和第四色数据全部设置为空值。 最后一页是单页打印的情况。
优选地， 本双色双面打印装置还包括数字控制系统， 图 9 示出 了根据本发明实施例的数控系统的示意图， 其包括：
新页面获取模块 40 , 用于按照打印顺序获取每页新四色页面点 阵；
正面打印模块 50, 用于提取新四色页面点阵的第一色数据和第 二色数据， 并打印到承印物的第一面；
背面打印模块 60, 用于提取新四色页面点阵的第三色数据和第 四色数据， 并打印到承印物的第二面；
其中， 预先将打印设备的第一色的颜料和第三色的颜料设置为 第一专色的颜料， 将打印设备的第二色的颜料和第四色的颜料设置 为第二专色的颜料。
本优选实施例显著地降低了打印成本。
优选地， 本装置还包括： 翻转机构， 用于在打印完第一面之后， 打印第二面之前， 将承印物翻转。
综上所述， 釆用本发明的方法和装置， 提高了打印效率， 而且 套打印系统， 给用户提供了极大的方便， 扩展了印刷机的适用范围。
显然， 本领域的技术人员应该明白， 上述的本发明的各模块或 各步骤可以用通用的计算装置来实现， 它们可以集中在单个的计算 装置上， 或者分布在多个计算装置所组成的网络上， 可选地， 它们 可以用计算装置可执行的程序代码来实现， 从而可以将它们存储在 存储装置中由计算装置来执行， 或者将它们分别制作成各个集成电 路模块， 或者将它们中的多个模块或步骤制作成单个集成电路模块 来实现。 这样， 本发明不限制于任何特定的硬件和软件结合。
以上所述仅为本发明的优选实施例而已， 并不用于限制本发明， 对于本领域的技术人员来说， 本发明可以有各种更改和变化。 凡在 本发明的精神和原则之内， 所作的任何修改、 等同替换、 改进等， 均应包含在本发明的保护范围之内。

Claims

权利要求：
1.一种双色双面打印方法， 其特征在于， 包括：
按照打印顺序每次获取两页原始四色页面点阵；
分别提取所述两页原始四色页面点阵中的有效的第一色数据和第 二色数据；
将所述分别提取的第一色数据和第二色数据分别写入一页新四色 页面点阵的第一色数据、 第二色数据、 第三色数据和第四色数据。
2.根据权利要求 1所述的方法， 其特征在于， 从第一页开始按照打 印顺序每次获取两页原始四色页面点阵。
3.根据权利要求 1所述的方法， 其特征在于， 从第二页开始按照打 印顺序每次获取两页原始四色页面点阵， 在此之前还包括：
获取第一页所述原始四色页面点阵；
生成第一页新四色页面点阵，将其中的第一色数据和第二色数据全 部设置为空值，将第一页所述原始四色页面点阵的第一色数据和第二色 数据写入所述第一页新四色页面点阵的第三色数据和第四色数据。
4.根据权利要求 1所述的方法， 其特征在于， 还包括：
如果按照打印顺序每次获取两页原始四色页面点阵，最后剩余单页 所述原始四色页面点阵， 则生成最后一页新四色页面点阵， 将最后剩余 单页所述原始四色页面点阵的第一色数据和第二色数据写入所述最后 一页新四色页面点阵的第一色数据和第二色数据，将所述最后一页新四 色页面点阵的第三色数据和第四色数据全部设置为空值。
5.根据权利要求 1-4任一项所述的方法， 其特征在于， 还包括： 按照打印顺序获取每页所述新四色页面点阵；
提取所述新四色页面点阵的第一色数据和第二色数据，并打印到承 印物的第一面； 提取所述新四色页面点阵的第三色数据和第四色数据，并打印到所 述承印物的第二面；
其中，预先将打印设备的第一色的颜料和第三色的颜料设置为第一 专色的颜料，将所述打印设备的所述第二色的颜料和所述第四色的颜料 设置为第二专色的颜料。
6.根据权利要求 5所述的方法， 其特征在于， 在打印完所述第一面 之后， 将所述承印物翻转， 然后打印所述第二面。
7.—种双色双面打印装置，其特征在于， 包括打印控制器，其包括： 原始页面获取模块，用于按照打印顺序每次获取两页原始四色页面 点阵；
提取模块，用于分别提取所述两页原始四色页面点阵中的有效的第 一色数据和第二色数据；
新页面生成模块 ,用于将所述分别提取的第一色数据和第二色数据 分别写入一页新四色页面点阵的第一色数据、 第二色数据、 第三色数据 和第四色数据。
8.根据权利要求 7所述的装置， 其特征在于， 所述原始页面获取模 块用于从第一页开始按照打印顺序每次获取两页原始四色页面点阵，或 者从第二页开始按照打印顺序每次获取两页原始四色页面点阵； 所述打 印控制器还包括：
插页首模块，用于如果所述原始页面获取模块从第二页开始按照打 印顺序每次获取两页原始四色页面点阵，则获取第一页所述原始四色页 面点阵， 生成第一页新四色页面点阵， 将其中的第一色数据和第二色数 据全部设置为空值，将第一页所述原始四色页面点阵的第一色数据和第 二色数据写入所述第一页新四色页面点阵的第三色数据和第四色数据； 补页尾模块，用于如果按照打印顺序每次获取两页原始四色页面点 阵， 最后剩余单页所述原始四色页面点阵， 则生成最后一页新四色页面 点阵，将最后剩余单页所述原始四色页面点阵的第一色数据和第二色数 据写入所述最后一页新四色页面点阵的第一色数据和第二色数据，将所 述最后一页新四色页面点阵的第三色数据和第四色数据全部设置为空 值。
9.根据权利要求 7或 8所述的装置， 其特征在于， 还包括数字控制 系统， 其包括：
新页面获取模块， 用于按照打印顺序获取每页所述新四色页面点 阵；
正面打印模块，用于提取所述新四色页面点阵的第一色数据和第二 色数据， 并打印到承印物的第一面；
背面打印模块，用于提取所述新四色页面点阵的第三色数据和第四 色数据， 并打印到所述承印物的第二面；
其中，预先将打印设备的第一色的颜料和第三色的颜料设置为第一 专色的颜料，将所述打印设备的所述第二色的颜料和所述第四色的颜料 设置为第二专色的颜料。
10. 根据权利要求 9所述的装置， 其特征在于，还包括： 翻转机构， 用于在打印完所述第一面之后， 打印所述第二面之前， 将所述承印物翻 转。
PCT/CN2011/084597 2010-12-24 2011-12-24 双色双面打印方法和装置 WO2012083887A1 (zh)

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