Patent ID: 7169221

Claim:
A water base ink for ink-jet recording comprising: C.I. Direct Yellow 132 in an amount of 0.1% by weight to 4.0% by weight; glycol ether having a melting point of not more than −45° C. in an amount of not less than 0.5% by weight; and a water-soluble organic solvent in which a solubility of the C.J. Direct Yellow 132 at 20° C. is not less than 5%, wherein the ink satisfies the following formulae: 0.2 ≦B/A , and 3 ≦C/A in which B/A represents a weight ratio of the glycol ether to the C.I. Direct Yellow 132 contained in the ink, and C/A represents a weight ratio of the water-soluble organic solvent to the C.I. Direct Yellow 132 contained in the ink, and wherein the ink further comprises a surfactant represented by the following formula: C x H 2X+1 —O—(CH 2 CH 2 O) 3 −SO 3 Na in which x is 12 or 13.