8 difficult to print colors and prepress design considerations
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Prints adorned our lives and added a beautiful color to our lives. So what are the characteristics of qualified prints? Today, the predecessors of the printing industry will give you a brief analysis of the eight difficult colors and some pre-press design considerations.
Gray balance
According to the experience of theory and production practice, the most difficult color to control is the gray balance. The gray balance is in a certain printing suitability, and the yellow, magenta and cyan primary color plates are combined with a certain dot ratio from shallow to deep to obtain different brightness achromatic (white, light gray, gray, dark gray, black), that is, Obtaining the visual neutral gray color, affecting many factors, the amount of ink used in printing, paper, full-page concentration, dot area, overprinting and screen line number will have a huge impact on the gray balance. It is the most tested machine's overprinting accuracy and operator skill level.
4 colors over the net and 3 colors over the net
Do not print the full version of the color (special color printing is recommended).
The things that people who don’t know how to design are the most difficult to print.
The color is on the one hand, too many multi-color ultra-fine lines, very small white and so on.
C=50M=50Y=50K=50
As long as there is a little bit of uncertainty, there will be serious color casts.
Text is four colors
The text is four colors, that is, the four colors in cmyk have text, especially the small words, which are difficult to put on, and the requirements for the machine's gripper are extremely high. This is also a relatively common problem, so the pre-press designer must check the black text in the publication file before the output, especially the small characters, whether it is only on the black version, but not on the other three-color version. If it appears, the quality of the printed product will be greatly reduced. When the RGB graphics are converted to CMYK graphics, the black text will definitely become four-color black. It must be handled unless otherwise specified.
Black base is not easy to handle
In order to achieve the effect, the black bottom can be used with special black ink or twice. It is not difficult to print, and it is relatively labor-intensive.
Superposition of several color dots
The superposition of several color dots, especially more than 70% of the dots. Specifically, dark brown, brown, dark green (flat net, containing blue 70), dark blue, purple blue, etc., because of the difference in color, it is difficult to find a balance on a printing machine, so it is a color that is difficult to print.
Generally full of things in printing
The spot color is full or larger, the reverse white characters, the same logo, and the same color block are generally difficult to follow, which is prone to chromatic aberration, ghosting, smudging and scratching.
[Qualified print evaluation criteria]
First, the overprint is accurate;
Second, the ink color is uniform;
Third, the network is full;
Fourth, ink and water balance;
Fifth, There is no printing failure in the printed products, such as smudging, scratching, pattern, paste, etc.;
Sixth, Strictly loyal to the manuscript.
All in all, as a word-of-mouth winner in the printing industry, we must pursue high-quality prints to adapt to the rising aesthetics of people.