Widespread system of creating color model for the offset image printing using four inks:
Image rasterizing is a representation of the four defined colors as a set of points. Density of placement is determined by the percentage of inks. The points close to each other are merged. This causes the perception to fixate new color shades. Any color can be described as a graduation from 0 to 100:
0/0/0/100 - black;
0/100/100/0 - red;
100/0/100/0 - green, etc.
Abbreviation CMYK is pronounced as "СMIК", the synonym of term CMYK printing is the "full-color printing."