| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain a recording ink stably giving images having excellent fixity and water resistance on recording media without causing the blots of the ink, such as bleeding, by compounding a specific perfluoropolyether. SOLUTION: This ink contains (A) (i) a perfluoropolyether of formula I and/or (ii) a perfluoropolyether of formula II in an amount of 0.3-5.0 wt.%. The ink is preferably an ink prepared by dissolving (C) a water-soluble dye in (B) an aqueous medium, an ink prepared by dispersing (D) a pigment in the component B, etc. The component C or D is preferably added in an amount of 0.1-5 wt.%. In the ink, the component A is preferably added to the component B so that the amount of the water in the component B is preferably 60-90 wt.%, more preferably 70-90 wt.%. The compound (i) preferably has a weight- average mol.wt. of 1,500-6, 500 and a (n)/(m) ratio of 20-40, and the component (ii) preferably has a weight-average mol.wt. of 4,000-8,000.</p> |
