Patent ID: 8491714
Filing Date: 2013-07-23
Classification: C09B,C09D

Abstract:
1. An ink composition comprising: a water-soluble copper compound and an anthrapyridone dye represented by the following formula: wherein M 1 represents a hydrogen atom, NH 4 , or Na; R 1 represents a hydrogen atom, a substitutable alkyl group, a substitutable aryl group, or a substitutable benzoyl group; R 2 represents a hydrogen atom or a substitutable alkyl group; R 3 represents a hydrogen atom, a halogen atom, or a substitutable alkyl group; R 4 represents a hydrogen atom, NH 4 which may be substituted, or a substitutable sulfo group; and R 5 represents an acyl group or a group represented by the following formula: where X and Y independently represent a chlorine atom, hydroxy group, amino group, monoethanolamino group, diethanolamino group, morpholino group, anilino group, or phenol group in which hydrogen atoms may be substituted by one or more substituents.