Patent ID: 8449664

Claim:
A water-based ink for ink-jet recording, comprising: a coloring agent; water; and a water-soluble organic solvent, wherein the coloring agent comprises the following a dye (1) and a dye (2): dye (1): a dye represented by the general formula (1) dye (2): at least one dye selected from the group consisting of dyes represented by the general formula (2a), dyes represented by the general formula (2b), C. I. Acid Red 1, and C. I. Acid Red 254 where in the general formula (1), n 1 is 1 or 2; three Ms each represent sodium or ammonium, and the three Ms may be identical to or different from each other; and R 0 represents a monoalkylamino group having 1 to 8 carbon atoms substituted by a carboxy group, where in the general formula (2a), R 1 represents a hydrogen atom, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group; R 2 represents a hydrogen atom, a halogen atom, or a cyano group; R 3 represents a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group; R 4 , R 5 , R 6 , and R 7 each represent a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted heterocyclic group, a substituted or unsubstituted sulfonyl group, or a substituted or unsubstituted acyl group, R 4 , R 5 , R 6 , and R 7 may be identical to or different from each other, R 4 and R 5 are not both hydrogen atoms, and R 6 and R 7 are not both hydrogen atoms; and A 1 and A 2 are both substituted or unsubstituted carbon atoms, or one of A 1 and A 2 is a substituted or unsubstituted carbon atom and the other is a nitrogen atom, where in the general formula (2b), r is 0, 1, or 2; R 12 , R 13 , and R 14 each represent a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxy group, a halogen atom, a hydrogen atom, a hydroxyl group, a substituted or unsubstituted carbamoyl group, a substituted or unsubstituted sulfamoyl group, a substituted or unsubstituted amino group, a nitro group, a sulfonate ester group, a substituted or unsubstituted alkylsulfonyl group, a substituted or unsubstituted arylsulfonyl group, a carboxy group, or a carboxylate ester group, and R 12 , R 13 , and R 14 may be identical to or different from each other; and R 15 , R 16 , and R 17 each represent a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted aralkyl group, a substituted or unsubstituted alicyclic group, or a substituted or unsubstituted heterocyclic group, and R 15 , R 16 , and R 17 may be identical to or different from each other.