Patent ID: 8580025

Claim:
An ink set comprising: a yellow ink composition; and at least one of a magenta ink composition and a cyan ink composition, wherein a coloring agent of the yellow ink composition is one which comprises an azo pigment represented by the following general formula (1), or its tautomers, or their salts or hydrates, the magenta ink composition contains as a coloring agent at least one pigment selected from the group consisting of C.I. Pigment Violet 19, C.I. Pigment Red 122, C.I. Pigment Red 202 and C.I. Pigment Red 209, and the cyan ink composition contains as a coloring agent at least one pigment selected from the group consisting of C.I. Pigment blue 15:1, C.I. Pigment Blue 15:2, C.I. Pigment Blue 15:3, C.I. Pigment Blue 15:4 and C.I. Pigment Blue 15:6: wherein Z represents a 5- to 8-membered nitrogen-containing heterocyclic ring, Y 1 , Y 2 , R 11 and R 12 each independently represents a hydrogen atom or a substituent, G 1 and G 2 each independently represents a hydrogen atom, an alkyl group, an aralkyl group, an alkenyl group, an alkynyl group, an aryl group or a heterocyclic group, and W 1 and W 2 each independently represents an alkoxy group, an amino group, an alkyl group or an aryl group.