| abstract |
The present invention relates to a phthalocyanine colorant characterizednin that it has, as substituents, at least one unsubstituted sulfamoyl group and atnleast one substituted sulfamoyl group, the total number of these groups being 2 ton4, the substituent on the substituted sulfamoyl group has a substituted triazinylngroup bonded thereto through a crosslinking group, and the unsubstitutednsulfamoyl group and the substituted sulfamoyl group are bonded to thenphthalocyanine ring at the β-position. Said phthalocyanine colorant is suitablenfor use in an ink, especially a cyan ink, for an ink-jet printer. A printed matternobtained by printing with said ink is excellent in light fastness, ozone fastnessnand moisture fastness. |