Bai Mo is a homogeneous mixture of colored bodies (such as pigments and dyes). ), adhesives, fillers (fillers), additives and other substances. When printing operators choose ink, they usually regard color as the front requirement. Ink color (tone) is one of the more intuitive indicators. In fact, it is a major indicator that reflects the quality of printed matter to a great extent. Therefore, the quality of pigment plays a decisive role in the quality of ink.