Special printing film film screening angle

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

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 later printing will cover it. This is due to the opacity of the ink;

Making printing film is only the first step of high-quality pad printing and screen printing. We should attach great importance to it. Now laser photo-discharging technology has been popularized in mainstream printing technologies such as offset printing, gravure printing, and flexographic printing, and has begun to extend to special In the printing industry, mastering the traditional art of film printing will lay the foundation for the adoption of new technologies in the future.

Source: Longjiang printing network Author: Bai Songfang