[China Packaging Network News] The customer is God, but sometimes our God will give us an overly gorgeous sample to print, it really makes people a headache. Based on the principle of sharing your worries, this article will give you an overview of eight hard-to-print colors and some pre-press design considerations from a professional perspective.
Gray balance
According to the experience of theory and production practice, the most difficult color to control is the gray balance. Gray balance is under a certain printability, yellow, magenta, and blue three-color version from shallow to dark, according to a certain ratio of the combination of overprinting to obtain different brightness achromatic (white, light gray, gray, dark gray, black), namely The visually neutral gray color affects many factors. The amount of ink used for printing, paper, full plate density, dot area, overprint, and screen lines will all have an impact on the gray balance. It is the most test machine's overprint accuracy and operator skill level.
4 color over network and 3 color over network
Do not print in full color (printing in spot colors is recommended).
It's hardest to print something that people don’t understand
The color is on the one hand, too many multi-colored very fine lines, very small characters, etc.
C=50M=50Y=50K=50 Daping Network
As long as there is a little bit of inaccuracy, there will be serious color casts.
Text is four-color
The text is four-color or cmyk. There are texts in the four colors, especially small words, which are difficult to put on. The requirements for the machine's grippers are extremely high. This is a relatively common problem, so the prepress designer must check that the black text in the publication document, especially the small print, is not only on the black version, but on the other three color versions. If it does, the quality of printed products will be greatly reduced. When RGB graphics are converted to CMYK graphics, the black text will definitely turn into four-color black. Unless otherwise specified, it must be dealt with.
Bad black background
In order to achieve the effect at the end of the black, it can be printed with special black ink or printed twice, and it is not difficult to print. It is more laborious.
A few color dot overlays
The overlay of several color dots, especially over 70% of the dot. Specifically, dark brown, brown, dark green (flat net, blue 70), dark blue, violet blue, etc. are difficult to print due to the difference in color, so it is difficult to find a balance on the printing machine.
Printing is generally full version of things
Spot color full version or large area, anti-white characters, the same logo, the same color, is generally difficult to follow color, easy to produce color, ghost, dirty, scratch phenomenon.
Attachment: Qualified Printed Criteria
One, accurate printing;
Second, the ink is uniform;
Third, outlets are full;
Fourth, ink and water balance;
Fifth, there is no printing failure of the printed product, such as dirty, scratch, pattern, paste version, etc.;
Strictly loyal to the manuscript.