The nine most difficult colors to print, how to deal with them?

The nine most difficult colors to print, how to deal with them?

1. Gray balance, according to the experience of theory and production practice, the most difficult color to control for printed matter is gray balance. Gray balance is a combination of yellow, magenta, and cyan primary colors from light to dark according to a certain dot ratio to obtain achromatic colors (white, light gray, gray, dark gray, black) with different brightness under a certain printability, that is, There are many factors that affect the color of visually neutral gray. The amount of ink used for printing, paper, full plate density, dot area, overprinting and the number of screen lines will have inextricable effects on the gray balance. It is the most test of the overprinting accuracy of the machine and the skill level of the operator.

2, 4-color screen and 3-color screen, do not print the full-page color (it is recommended to use spot color printing).

3. The things designed by people who do not know how to print are the most difficult to print. Color is on the one hand, too many very fine, very small characters are white and so on.

4. C=50, M=50, Y=50, K=50 Daping net, if there is a little bit of inaccuracy, the color cast will be serious.

5. The text is in four colors, that is, there are texts in the four colors in cmyk, especially small characters, it is difficult to fit, and the gripper of the machine is extremely demanding. This is also a relatively common problem, so prepress designers must check whether the black text in the publication file, especially the small text, is only on the black version, and should not appear on other three-color versions. 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 specifically specified.

6. There is also a black background that is not easy to deal with. In order to achieve the effect of black bottom, you can use special black ink or print twice, it is not difficult to print, and it is more labor-intensive.

7. The superposition of several color outlets, especially more than 70 percent outlets. Specifically, dark brown, brown, dark green (flat screen, containing blue 70), dark blue, violet blue, etc. are difficult to print because of the color difference, so it is difficult to find a balance on the printing machine.

8. Generally full-page things in printing, spot-color full-page or large area, reverse white characters, the same logo, and the same color block are generally difficult to follow the color, and are prone to color difference, ghosting, smearing, scratching injury phenomenon.

9. Small words in gold and silver. Professionals say that small text is afraid of dry printing in batch process. These must be controlled in place, the printing plate should be wiped clean, the ink viscosity should be controlled at around 14, and attention should be paid to dry printing.

In short, qualified printed matter must meet:

1. Accurate overprinting; 2. Uniform ink color; 3. Full dots; 4. Ink balance; We must pursue high-quality prints to suit people's increasing aesthetics.

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