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The Application of Organic Pigment in Ink

Ink is the largest consumer of organic pigments, accounting for about 45% to 50% of the total. According to the printing version, the ink can be divided into lithography, gravure, letterpress three categories. The representative of the various categories, lithography for offset printing ink, gravure for the solvent ink, letterpress for the newspaper ink. The various types of ink on the pigment requirements are the same, but can be summarized as the dispersion, optical properties, rheology, fastness. The other consideration is also the effect of the pigment on the ink drying property, the abrasion of the plate, the stain in the lithography, and the like.

With the progress of printing technology and improve the level of consumption, color printing in the four-color printing ink growing rapidly. Four-color ink in addition to black, the yellow pigment yellow amide yellow yellow G and pigment yellow aniline yellow AAOT, magenta in the red pigment 57: 1, blue pigment blue 15: 3,15: 4. Consumption is rapidly becoming the main variety of organic pigments for the ink. In addition, the proportion of wet paste pigment in the ink pigment is increasing. Water-based ink with paint, the rapid increase in the number.