| 摘要 |
PROBLEM TO BE SOLVED: To obtain a liquid composition capable of forming images high in reliability for a long period of time in every possible environment while maintaining a high image concentration, etc., by limiting a chlorine ion concentration in a cationic polymer-containing liquid composition to <= a specific concentration. SOLUTION: This composition contains a cationic polymer (preferably 400-5,000 weight-average molecular weight, e.g. a polyallylamine, a polyaminesulfone, etc., preferably a polyallylamine) and has <=3,000ppm chlorine ion concentration. The cationic polymer is prepared by dissolving it in an aqueous medium and its concentration is preferably 0.05-20wt.%. The composition can be combined with an ink such as yellow or magenta ink to make an ink set. Consequently the liquid composition maintains image uniformity, suppression of color bleed, improvement in durability of image, etc., and is expected to have reliability of use in a severe environment and reuse after long-term preservation. |
