Patent ID: 8603232
Filing Date: 2013-12-10
Classification: C09D

Abstract:
1. A water-based ink set for ink-jet recording, comprising: a water-based yellow ink which contains water, a water-soluble organic solvent and a yellow colorant containing a yellow dye (Y-1) and a yellow dye (Y-2) indicated below; a water-based magenta ink which contains water, a water-soluble organic solvent and a magenta colorant containing a magenta dye (M-1) and a magenta dye (M-2) indicated below; a water-based cyan ink which contains water, a water-soluble organic solvent and a cyan colorant containing a cyan dye (C-1) indicated below; and a water-based black ink which contains water, a water-soluble organic solvent and a black colorant containing carbon black, wherein; the yellow dye (Y-1) is a dye represented by the general formula (Y-1); the yellow dye (Y-2) is at least one dye selected from the group consisting of C.I. Direct Yellow 86, C.I. Direct Yellow 132, and C.I. Direct Yellow 142; the magenta dye (M-1) is a dye represented by the general formula (M-1); the magenta dye (M-2) is at least one dye selected from the group consisting of dyes represented by the general formula (M-2a), dyes represented as the general formula (M-2b) or a salt thereof, C.I. Acid Red 1, and C.I. Acid Red 254; and the cyan dye (C-1) is a dye represented by the general formula (C-1); in the general formula (Y-1), R X Z M in the general formula (M-1), n Ms each represent sodium or ammonium, and are identical to or different from each other; and R in the general formula (M-2a), R R R R A in the general formula (M-2b), r is 0, 1, or 2; R R in the general formula (C-1), rings A a satisfies 0≦a≦4; b satisfies 0≦b≦4; c satisfies 0≦c≦4; a, b, and c satisfy 0≦a+b+c≦4; z is an integer satisfying 1≦z≦3; and R