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US 10,208,221 B2Granted
Ink composition and ink jet recording method
AssigneeSeiko Epson Corporation
InventorShuichi Koganehira
Life of this patent
Estimating the term…
Abstract
An ink composition contains water, a coloring material, a surfactant, a slightly water-soluble 1,2-alkanediol having a carbon number of 7 to 10 and a melting point in the range of 30° C. to less than 80° C., and a water-soluble symmetrical both-end alkanediol having a melting point of 80° C. or more.
Claims12
An ink composition comprising:
- water;
- a coloring material;
- a surfactant;
- a slightly water-soluble 1,2-alkanediol having a carbon number of 7 to 10 and a melting point in the range of 30° C. to less than 80° C.;
- a water-soluble symmetrical both-end alkanediol having a melting point of 80° C. or more;
- and
- 0.1% by mass to 3.0% by mass of an organic amine,
- wherein the symmetrical both-end alkanediol is 2,5-dimethyl-2,5-hexanediol, and a content thereof is in the range of 3.0% by mass to 18.0% by mass, and
- a melting point of the organic amine is 80° C. or more, and
- wherein the weight ratio of the symmetrical both-end alkanediol to the slightly water-soluble 1,2-alkanediol is in the range of 3:1 to 6:1.
7 more elements
Dependencies are inferred from the claim text.