Patent ID: 6921429

Claim:
A water base ink for ink-jet recording comprising at least one amine compound selected from a group consisting of group (a), at least one surfactant selected from a group consisting of group (b), a coloring agent, and water: group (a): N-n-butylethanolamine, 1,4-bis(3-aminopropyl)piperazine, beuzylamine, and an amine compound represented by the following general formula (1): wherein a side chain (A) represents hydrogen atom or methyl group, a side chain (B) represents a group containing hydroxyl group, a side chain (C) represents hydrogen atom or hydroxyl group, and q is an integer of not more than 5 in the formula (1); and group (b): compounds represented by the following general formulas (2), (3), and (4): wherein R 1 represents alkyl group and x and y are integers to satisfy x+y=5 to 15 in the formula (2); CH 3 —(CH 2 ) 11 —O—(CH 2 CH 2 O)z—H (3) wherein z is an integer of not mare than 9 in the formula (3); and wherein R 2 represents alkyl group in the formula (4).