Patent ID: 6379441
Filing Date: 2002-04-30
Classification: C09D

Abstract:
A cyan ink composition comprising a copper phthalocyanine dye, water, an organic solvent, and an imidazole derivative or a complex of nickel with a ligand selected from a group consisting of ammonia, C1-6 alkoxy, C1-6 alkyl-NH2CO2, and NH2-C1-6 alkyl-CO2, with the proviso that, when the imidazole derivative is contained, said cyan ink composition further comprises an antioxidant, a saccharide, or a compound represented by formula (I): whereinA represents a hydroxyl or amino group, said amino group being optionally substituted by a C1-6 alkyl, a C1-6 alkoxy, or a hydroxy C1-6 alkyl; and M represents lithium, sodium, potassium, ammonium, or a mono- or di-C1-6 alkylamino.