How to deal with the nine most difficult colors to print?
Time:2025-02-17
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1、gray balance, according to theory and production practice experience, the most difficult color to control print is gray balance. Gray balance is under a certain printability, yellow, magenta, green three primary color plate from light to deep according to a certain dot ratio combination of overprinting to obtain different brightness of achromatic (white, light gray, gray, dark gray, black), that is, to obtain a visual neutral gray color, there are many factors affecting it, printing the amount of ink, paper, full plate concentration, dot area, overprinting and screen line number. Will have a myriad of effects on the gray balance, which is the most test of the overprinting accuracy of the machine and the skill level of the operator.
2、4 color over the net and 3 color over the net, the full color is recommended to use spot color printing.
3、 People who don‘t know how to print design things that are the hardest to print. Color is one thing, too much very fine, very small word transparent white and so on.
4、 C=50, M=50, Y=50, K=50 of the large flat net, a little inaccurate color is serious.
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5、the text is four-color, that is, there are words in the four colors of cmyk, especially small words, it is difficult to put on, and the machine‘s paper teeth are extremely demanding. This is also a more common problem, so the prepress designer must check the black text in the publication file before output, especially the small print, is not only on the black edition, and should not appear on the other three-color edition. If it appears, the quality of the printed product will be greatly reduced, and when the RGB graphics are converted to CMYK graphics, the black text will definitely become four-color black. Unless otherwise specified, it must be handled.
6、 black bottom is also difficult to deal with. In order to achieve the effect of black bottom can use extra black ink or printing twice, it is not difficult to print, more time-consuming.
7、 several color network superposition, especially more than 70% of the network. Specifically, dark brown, brown, dark green (flat mesh, containing blue 70), dark blue, purple blue, etc. are difficult to find balance on the printing machine due to the color difference, so they are difficult to print colors.
8、 in the printing of general full plate content, spot color full plate or larger area, anti-white characters, the same logo, and the same color block, it is generally difficult to follow the color, easy to produce color difference, ghost, dirty, scratch phenomenon.
9、 gold, silver small text, afraid of batch process dry plate, these should be controlled in place, the printing plate should be wiped clean, ink viscosity control at about 14, and pay attention to dry plate.
In short, qualified prints must meet the following requirements: accurate overprint; The ink color is uniform; Full dot; Ink and wash balance; No printing faults, such as dirt, scratch, flower plate, paste plate, etc. Strictly true to the manuscript. We must pursue high-quality prints to meet people‘s increasing aesthetic concepts.
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Anna Zhang