Patent ID: 8343269

Claim:
A colorant compound represented by the general formula (1) shown below: wherein R 1 , R 5 , R 6 and R 10 each independently denote an alkyl group; R 3 and R 8 each independently denote one of a hydrogen atom, an alkyl group, an alkoxy group and an aryloxy group; R 2 , R 4 , R 7 and R 9 each independently denote one of a hydrogen atom and an acylamino group represented by the general formula (2) shown below, and at least one of R 2 , R 4 , R 7 and R 9 is an acylamino group represented by the general formula (2) shown below; Z denotes one of an SO 3 H group, an SO 3 M group and a sulfamoyl group, M denotes one of an ammonium ion and an alkali metal ion, and Z is substituted at a position of at least one hydrogen atom of an aromatic ring; and n denotes an integer of 0 to 3 in the case where at least one of R 2 , R 3 , R 4 , R 7 , R 8 and R 9 is substituted with an ionic group, and n denotes an integer of 1 to 3 in the case where none of R 2 , R 3 , R 4 , R 7 , R 8 and R 9 is substituted with an ionic group, wherein R 11 denotes one of an alkyl group, a cycloalkyl group, an aryl group, an arylalkyl group, an alkenyl group and a heterocyclic group; and ‘*’ denotes a bonding site with an aromatic ring in the general formula (1).