Ink (ink,printing Ink) is an important material for printing, it will be printed or inkjet prints and text on the substrate. The ink includes the main ingredients and auxiliary ingredients, which are evenly mixed and rolled into a viscous colloidal fluid. By the binders (resins), pigments, fillers, additives and solvents, and so on. For books and periodicals, packaging decoration, architectural decoration and electronic circuit boards and other printing. With the increase of social demand, ink varieties and output also expand and increase correspondingly.
15th century, the German Gutenberg invented the lead alloy type printing, ink has improved, with light black as a pigment, linseed oil for the link material, by hand it is evenly mixed made of the ink. But until the mid-19th century, science, especially the progress of chemistry, make the development of coal tar dyes and color science, ink manufacturers can according to user needs to make a different hue, lightness, saturation of various colors. Ink production has entered a new stage of development.