Patent ID: 8709143
Filing Date: 2014-04-29
Classification: B41J,C09D

Abstract:
1. A water-based ink set for ink jet recording, comprising: a water-based black ink containing a black colorant, water, and a water-soluble organic solvent; and a water-based cyan ink containing a cyan colorant, water, and a water-soluble organic solvent; wherein the black colorant includes a self-dispersible carbon black modified by at least one of a carboxyl group and a sulfo group; and the cyan colorant includes a dye represented by general formula (I): in the general formula (I), each of rings A at least one of the rings A “a” satisfies 0≦a≦4, “b” satisfies 0≦b≦4 and “c” satisfies 0≦c≦4, and a sum of “a”, “b”, “c” satisfies 0≦a+b+c≦4; “z” is an integer satisfying 1≦z≦3; and R