Product Alias |
Sanmenxia Homebook Printing Factory, Sanmenxia Homebook Printing |
Region oriented |
|
Place of Origin |
Sanmenxia Operation Book Printing Factory |
Text paper size |
142*208mm |
Body paper weight |
80g |
Accessory |
pen |
style |
Traditional |
style |
Korean version |
colour |
black |
Cover color |
gules |
Cover material |
Paper |
Sanmenxia Operation Book Printing Factory
When making plates in the printing factory of Sanmenxia, the originals should be divided into four colors: green (C), magenta (M), yellow (Y), and black (K). Today, the editor of China Paper found the relevant content and took you to understand the sub principles.
Answer: There are thousands of colors on the screen of color drawings or color photos. It is almost impossible to print these thousands of colors. Four color printing is adopted for printing. That is, the original is first color decomposed into four color plates of cyan (C), magenta (M), yellow (Y) and black (K), and then color synthesis is carried out during printing. The so-called "color separation" is to use the selective absorption characteristics of red, green and blue filters to different wavelengths of colored light according to the principle of subtractive method to decompose the original into yellow, magenta and cyan primary colors. In the process, the color light absorbed by the color filter is just the fill light of the color filter itself, so that on the photosensitive film, a negative of black and white images is formed, and then screened to form a dot negative, which is then copied and printed into various color plates. This is the early principle of photographic color separation.
Due to the development of printing technology in Sanmenxia Homework Printing Factory, we can now separate, sample and transform the original colors into digital information through prepress scanning equipment, that is, decompose the original colors into red (R), green (G) and blue (B) in the same way as photoengraving, and digitize them, and then decompose the digital information into green (C) through mathematical calculation by computer , magenta (M), yellow (Y), black (K) four color information</ a></a></a>
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