Many people have asked about the ICC curve, but they are all very unclear. Some people even think that with the ICC curve, they can print beautiful pictures. Actually, the following is a general understanding of what I have learned.

First of all, as we all know, the RGB color gamut in computer software is very wide, and the computer uses a computer language; and our printer uses C, M, Y, K or C, M, Y, K, LC, LM, etc. We can call the printer language. Because the color language for the computer output to the printer here would be a translator to translate, such as the combination of black, in the computer's PHOTOSHOP software, we can set the black to C:50 Y:50 M:50 (example, The ratio is not necessarily black. Then when the computer outputs a black language, the printer driver will issue a C:50 Y:50 M:50 command to the printer. The printer will eject ink according to this command to form a pattern. .

Secondly, different materials and different inks will have different reflections. Comparing the photographic paper with PP, the chemical reaction of the ink on the surface coating is different, that is, when the ink reaches the surface of these coatings. How much will have a different effect, then the need to make a correction when the computer language is converted to the printer language, so that the ICC curve will play a role.

In addition, the characteristics of different devices also distinguish between the recognition and execution of these languages. For example, EPSON first-generation nozzles and fourth-generation nozzles have different recognition capabilities and execution capabilities for these instructions and languages. The ink is the same as the substrate, but different ICC curves have to be developed depending on the equipment.

ICC curve generation: Through the cooperation of color management equipment and software such as EYEONE, the production of ICC curves becomes simple and quick. EYEONE uses software to create a standard color block on the substrate, and then enters the color block into the software through the spectrophotometer, and compares it with the original color block. The generated deviation value is the ICC curve file. Different materials should have Different curves, of course, different inks also have different curves.

Therefore, some manufacturers do not understand the production of ICC curves, but also do not understand the meaning of the ICC curve, just simply test other inks after the simple blending of inferior ink, and does not provide a complete color service system. This is a serious irresponsibility to the customer! Because desktop printers use fewer types of media, there are already some curves-like files in the driver of the printer. Therefore, desktop printers do not need curve file support. The curve produced by the equipment is certainly not good.

In large format, devices that use the third RIP software need to have ICC profiles loaded into the RIP software for graphics output on the print media. Therefore, ICC curves cannot be ignored, nor can they be randomly downloaded from the Internet to be used indiscriminately.


Reprinted from: China Inkjet Forum

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