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Full color printing color control management

Basis. Standardize the various aspects of print production, so that the device status and material performance, stability, and the establishment of standardized data, which affect the stability of the various color management factors. 2 color information in digital color management ICC color characteristics of various devices are to be recorded digitally, transmission and conversion. In the entire printing process, prepress is the first realization of digital information processing, image color information can be TIFF, PS,[link widoczny dla zalogowanych], EPS, PDF and other documents to record and transmit, the device records the color characteristics of ICC file information; in prepress and printing machine part, the image color information recorded by the plate and transmission, and image related to the color of ink used to restore the image data can be by way of analog or digital transmission, but in the entire color management, ink data generated from pre-press and digitally transferred to presses. 3 Digital Workflow Digital Workflow The basic idea is to pre-press, printing, printed with the management integration as a whole, to achieve graphic information, production control information and management information and processing of digital records. Color management control information in the color digital workflow through to transmission and processing. The current digital workflow is mainly based on PDF and JDF standards process, including criteria used to record graphic information PDF, JDF standard management information is recorded, from prepress to printing ink on the standard transfer of data by the PPF. 4 color printing process of the automatic control of automatic control of color printing process, including color real-time data collection, data analysis, feedback and correction, automatic color control system to be completed. This system are: closed-loop color management system (Close ~ LoopCMS), the image control system, machine vision systems. (1) closed-loop color management system (Close-LoopCMS) closed-loop color management is proposed by the GretagMacbeth color management thinking company, whose core is to reduce the impact of color management in the human factor, so that the color management system easier to use and more automated. Closed-loop color management system (Close-LoopCMS) most of them are online or on-line, that a Chinese packaging 2oo ~ / fully automated color control,[link widoczny dla zalogowanych], the whole process without manpower. Closed-loop color management system to install the equipment, the output will be measured in real time sheets of the color space,[link widoczny dla zalogowanych], if the deviation from the predetermined color space, the system will guide the device accordingly. f2) loop control system as the function of image control system is measured sheets were compared in order to achieve color printing line control, such as the Heidelberg CPC24 online online image control system. The system can also print images of defects regions, such as color value, or overprint accurate error detection. CPC24 system is designed to monitor high-resolution CCD scanner head scans the entire sample data sheets, and sample data transfer to a dedicated computer processing, and comparative analysis with the default values. CPC24 sheets may be some key areas of supervisory inspection control, to control the color of the sheets, color sheets when CPC24 system finds error, it will immediately propose amendments. (3) machine vision machine vision system is to use machines instead of human eyes do the measurements and judgments. A typical industrial machine vision applications include the following part of the _ light source, lens, CCD camera, image processing unit (or image capture card), image processing software, monitors,[link widoczny dla zalogowanych], communication (input and output units) and so on. Machine vision systems machine vision products (ie image acquisition device,[link widoczny dla zalogowanych], the two sub-COMS ~ ICCD) will be converted into image signal intake goals, sent to a dedicated image processing system, the distribution and the pixel brightness, color and other information, into digital signal. Imaging systems for various operations on these signals to extract target characteristics, and according to the results of field devices to control the action. Machine vision inspection system has the advantage of speed, high precision color management can be used in the machine vision system detects a print color, color uniformity, greatly improving efficiency. At present, the machine vision system applications in the printing industry is only just beginning, but have a good prospect. With the color control technology continues to evolve, the industry is to deepen the technical understanding of color management, color management, using the results will be getting better and better, will play a greater benefit. References: 1l China Printing Printing Media Blue Book Section 2. gealWorldColorManagement color management [U.S.] BruceFraser, ChrisMurphy Publishing House of Electronics Industry Daheng 5 machine vision system visual technology company image 4 诲 Goldberg Heidelberg printing press control system

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