Tip: How to achieve seven-color printing effect in three colors

Tip: How to achieve seven-color printing effect in three colors

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The use of enhanced ash composition replacement (gcr) allows us to achieve good color printing with only three different screen angles in a seven-color printing process without causing color changes. Suppose we set black to the main color, and its screen angle is 45°. The other six colors: cyan, blue, magenta, red, yellow and green will alternately add 165° and 105° angles. In this way, we can produce a variety of shades in three colors, which are black for the image and two adjacent colors.

For example, we can produce all printable colors between red and yellow in black and red and yellow. Under the premise of not causing chromatic aberration, we can add up to 10% of the complementary color to deepen the color effect. Essentially, in one area of an image, only three colors are needed to print.