CYAN DYE FOR INK-JET

摘要

A phthlocyanine dye, characterized in that it has, as substituents, at least one unsubstituted sulfamoyl group and at least one substituted sulfamoyl group, wherein the sum of the number of both sulfamoyl groups is four, and the unsubstituted sulfamoyl group and the substituted sulfamoyl group are bonded to the beta-position of a phthalocyanine ring. The phthalocyanine dye can be suitably used as an ink, particularly a cyan ink, for an ink-jet printer, and a printed matter obtained by using said ink is excellent in the resistance to light, ozone and moisture.