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US 10,377,910 B2Granted
Aqueous ink composition and ink jet recording method
AssigneeSeiko Epson Corporation
InventorsKenichi Seguchi, Takayoshi Kagata, Tsuyoshi Sano, Akira Mizutani, Tadashi Watanabe
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Abstract
An aqueous ink composition contains an organic solvent, a surfactant, and resin fine particles. The resin of the resin fine particles takes 500 minutes or more to melt at 40° C. with the surfactant, which is a temperature relatively close to the temperature the ink jet head is heated to by the platen or the like during recording. Such an aqueous ink composition exhibits a good filling property and can be continuously ejected stably.
Claims18
An aqueous ink composition comprising:
- an organic solvent;
- a surfactant;
- and
- resin particles made of a resin, the resin taking a time A to melt at 40° C. with the surfactant, the time A being 500 minutes or more,
- wherein the organic solvent includes an organic solvent having a standard boiling point of more than 280° C., and a content of the organic solvent having the standard boiling point of more than 280° C. is greater than 0% by mass and less than 3% by mass relative to the total mass of the aqueous ink composition, and
- wherein the surfactant is selected from the group consisting of a perfluoroalkylsulfonic acid salt, a perfluoroalkylphosphoric acid ester, a perfluoroalkylethylene oxide adduct, a perfluoroalkylbetaine, a perfluoroalkylamine oxide compound, and a polyether-modified organosiloxane.
3 more elements
Dependencies are inferred from the claim text.