Patent ID: 8709143

Claim:
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 1 , A 2 and A 3 is a benzene ring, 2,3-pyridine ring or 3,2-pyridine ring; at least one of the rings A 1 , A 2 and A 3 is the 2,3-pyridine ring or the 3,2-pyridine ring, and the rings A 1 , A 2 and A 3 are identical with or different from one another; “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 0 is a straight chain alkyl group having 1 to 6 carbon atoms.