PS screen printing machine attention to the problem of screening problems

The first problem that offset printing targets need to solve is the screen angle. The so-called screening angle refers to the acute angle between the centerline of the outlet and the horizontal line. In monochrome printing, the screening angle of 45 degrees is often used. At this time, the visual effect is the best. When multi-color printing, due to the regular superposition of dots, moiré fringes will be generated. The method to avoid the moiré fringe is to use the maximum angle of the screening angle for the four-color printing film as much as possible. In general, the four-color printing mostly sets the main color to 45 degrees, and the other colors have a difference of 30 degrees.

The original man-oriented manuscripts, people's observation center is mainly concentrated in the face, the face color and the level of the difference is very sensitive, should set the main color magenta, screening angle is set to 45 degrees CMYK followed by 15,45, 90, 75;

For landscape-based manuscripts, the colors are mainly green, and the cyan screening angle should be set to 45 degrees, revealing the natural and beautiful scenery features. The other colors of the screening angle are as follows: CMYK takes 45 in sequence. 15, 90, 75. Although setting the main-tone screening angle helps to express the main characteristics of the original, it is important to use the appropriate color sequence when printing. If the main color is not printed at a later position, the color of the post-print will cover it, due to the opacity of the ink.