A solution to the problem of digital color quality control - color management technology (3)
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Color management technology import key
When manufacturers introduce color management technology into output devices such as traditional printing presses, printers, digital proofers, etc., the problem is how to generate the color profile of the traditional printing press, while generating the color profile. Previously, I wanted to print an IT8.7/3 color guide to generate an ICC that provides data data The profile is applied to the color management system.
When printing an IT8.7/3 color guide, you must first confirm the stability of the output device.
In other words, the calibration of the device must be performed The calibration of the printing press equipment is a color process that enables the device to accurately display the quality, that is, the color produced by the device can be stabilized and consistent. This step is to ensure the future established ICCProfile. The color characterization describes the accuracy of the file and complies with the color management practices of the ICC International Color Organization.
In order to allow printing equipment and other equipment to print standard IT8.7/3 color guides, it is necessary to carry out standardization of the printing operating system so that the prints can obtain the same print control data under the same production conditions (such as full-page density). Value, dot gain, highlight, midtone, shadow concentration, etc.). Basically, you should pay attention to the following four points:
1. The SID full-page concentration value of the four-color ink.
2. Dot-Gain dot gain of four-color ink.
3. Grey balance control
4. TAC total ink volume control
Since the control standard data in the printing process will vary with the characteristics of the printing materials (such as paper, ink, etc.) used by the manufacturer, it is recommended that the printing companies should control the printing process according to their own and customer requirements. Establish basic control data for printing quality. The printing quality control standard data provided in Table 1 below is based on the US GRACol standard. Of course, for manufacturers using commercial rotary machines, the US SWOP printing standard can be used as a reference standard.
The standardization of the printing operating system inside the printing factory has long been a headache for manufacturers and it is difficult to solve. In this regard, the industry can seek the assistance of the printing industry technology research center, and the current research and development of domestic printing quality control technology, It can be said that it is completely dominated and executed by the Printing Industry Technology Research Center supported by the Technical Department of the Ministry of Economics. After years of research efforts, it has completed the "Control Guide", "Test Samples" and "ColorWiser Print Tube Diagnostics". The development of software such as system, the main purpose of this system is to control and analyze the printing quality by computer, and provide high-efficiency, practical and convenient printing tube tools, mainly for full-page concentration, overprinting ability, gray balance, Eight common problems, such as dot swell, ink balance, print registration, creep printing, and print resolution, are used for analysis and control to diagnose color quality problems, in addition to effectively assisting the industry to solve and improve the current printing color. In addition to quality, for today's process The era of digital control is arguably the cornerstone of China's printing industry's entry into digital color quality control.
Therefore, in order to achieve the color management goal, the industry should pay special attention to the fact that the focus should be on establishing a standardized operation process and using and using print quality control tools. Therefore, the control of the color quality of the printed matter can be confirmed, so that the basic control data can be printed. Maintain a certain range, so that there is a basis and qualification to introduce color management systems and technologies, and achieve twice the result with half the effort. Otherwise, it is necessary to establish the effect of digital proofing in the factory and the effect of traditional printing colors. Unrealistic thoughts.
So as long as you can grasp this principle, color management can still achieve a close effect on the color of different output media in the traditional process.
Conclusion
In today's booming printing digital automation technology, in addition to greatly improving the productivity of the industry, high-quality printing that emphasizes color accuracy and meticulousness will be an important milestone for future players in the market, and technology to control the color quality of printing. It will be the best competitive weapon for Chinese printers in the domestic and foreign markets, and also the corporate brand recognition of printing companies in the industry. Therefore, in order to respond to the advent of the digital age and enhance the upgrading of its printing technology, the industry will focus on printing and printing technology. Quality control and digital color management applications are a correct and necessary path.