Patent ID: 7736427
Filing Date: 2010-06-15
Classification: C09D

Abstract:
1. An inkset comprising at least a yellow ink composition, two types of magenta ink compositions of different color density, and a cyan ink composition: the magenta ink composition containing as a colorant at least one type of compound expressed by the following formula M-1, and at least one type of compound expressed by the following formula M-2, wherein formula M-1, A represents a residue of a five membered heterocyclic diazo component A-NH wherein formula M-2, M represents a hydrogen atom, ammonium group, or alkali metal atom, X represents a diaminoalkylene group, and n is either 1 or 2; the yellow ink composition containing as a colorant at least one type of compound expressed by the following formula Y-1 wherein in formula Y-1, X the cyan ink composition containing as a cyan dye at least one type of compound selected from the compounds or salt thereof expressed by the following formula C-1 wherein formula C-1, X Y a M represents a hydrogen atom, a metal atom or oxide, a hydroxide, or a halide thereof; with the proviso that, at least one of X