| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an aqueous pigment ink for inkjet which is excellent in delivery stability and preservation stability and gives an image having high gloss and high sharpness on a glossy paper for inkjet. <P>SOLUTION: The ink composition comprises at least a pigment, water and a surfactant and contains 0.1-20 wt% of a surfactant comprising an ethylene oxide/propylene oxide block copolymer represented by general formula (1): HO-(C<SB>2</SB>H<SB>4</SB>O)<SB>m</SB>(C<SB>3</SB>H<SB>6</SB>O)<SB>p</SB>(C<SB>2</SB>H<SB>4</SB>O)<SB>n</SB>-H (wherein m, p and n satisfy 1≤m≤100, p≤50, and 0.15≤p/(m+n)≤6). <P>COPYRIGHT: (C)2004,JPO |
