Patent ID: 8668769

Claim:
A water-based ink for ink-jet recording, comprising: water; a water-soluble organic solvent; alcoholamine which is contained at 0.2% by weight to 0.75% by weight in the water-based ink for ink-jet recording; an anionic surfactant having a sulfate structure which is contained at 0.02% by weight to 0.2% by weight in the water-based ink for ink jet recording; and a colorant including a dye represented by general formula (1): wherein 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 to 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.