First of all, as we all know, the color gamut of RGB in computer software is very wide, and computers use computer languages; and our printers use C, M, Y, K or C, M, Y, K, LC, We can call printer language such as LM. Because the color language output by the computer reaches the printer, there must be a translator to translate it, such as combination black. In PHOTOSHOP software in the computer, we can set the black to C: 50 Y: 50 M: 50 (for example, This ratio is not necessarily black.) When the computer outputs a combination of black language, the printer driver will issue a C: 50 Y: 50 M: 50 instruction to the printer, and the printer ejects ink to form a pattern according to this instruction. .
Secondly, different materials and different inks will have different reflections. Comparing the casting of photo paper and PP, the chemical reaction of the ink on the surface coating is different, that is, when the ink reaches the surface of these coatings, The amount will have different effects, so when the computer language is converted to the printer language, a correction needs to be made, so that the ICC curve plays a role.
Third, the characteristics of different devices have also made a difference in the recognition and execution of these languages, such as EPSON first-generation printheads and fourth-generation printheads. The recognition and execution capabilities of these instructions and languages are different, although The ink is the same as the substrate, but different ICC curves must be formulated according to the equipment.
Generation of ICC curves: Through the cooperation of color management equipment and software similar to EYEONE, the production of ICC curves becomes simple and fast. EYEONE prints a standard color block on the substrate through software, and then enters the color block into the software through a spectrophotometer, and compares it with the original color block. The deviation value generated is the ICC curve file. Different materials must have Different curves, of course, different inks also have different curves.
Therefore, some manufacturers do not understand how to make ICC curves, and do not understand the meaning of ICC curves. They simply test other inks and simply blend out the poor quality inks. They do not provide a complete color service system. This is seriously irresponsible to customers! Also, because desktop printers use fewer types of media, there are already some curves-like files in the printer driver. Therefore, desktop printers do not need the support of curve files. Of course, the curve produced by the equipment is not good.
In large format, devices using the third RIP software need to have the ICC curve transferred to the RIP software for graphic output of the print media. Therefore, ICC curves cannot be ignored, and some curves can not be downloaded from the Internet for random use. ,