There are lots of colorants used in printing inks, azo pigment, benzimidazolone pigment, phthalocyanine pigment, dioxazine pigment, quinacridone pigment, DPP pigment, naphthol pigment, isoindolinone & isoindoline pigment, metal complex solvent dyes, Rhodamine 6GDN, Rhodamine BL-ED etc.. These colorants exhibits different effects of printing inks, also there are fluorescent printing ink, that is made from fluorescent colorants.
