1. In color printing, the layering and color of the original are completed by the overprinting of the dots of each color;
2. In the color synthesis, the arrangement of the dots will appear juxtaposed, superimposed, etc., but the color of the dots themselves on the printed matter will cause the subtractive method to be colored;
3. When the parallel or overlapping dots are mixed or not completely overlapped, the principle of additive color mixing is observed by the human eye. Therefore, the principle of color reproduction of color prints by juxtaposition and superposition of dots is first subtractive (printing on paper) and post-additive (observed by human eyes);
4. According to the principle of dot juxtaposition and superimposed color reproduction, it is known that the amount of ink absorbed by the ink, the thickness of the ink layer, the color density of the ink, and the order of printing all affect the effect of color reproduction;
5. In order to make the three primary colors inks appear to be correct with different brightness of gray, so change the dot synthesis ratio and the amount of ink of the three primary colors of ink, realizing the gray balance is the basis of color reproduction.
