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US 10,647,865 B2Granted
Ink composition
AssigneeSeiko Epson Corporation
InventorsKeisuke Morita, Yusuke Mizutaki, Tomohito Nakano
Life of this patent
Estimating the term…
Abstract
An ink composition includes 3-methyl-1,5-pentanediol; trimethylolpropane; water; and a pigment, in which no more than 0.5% by mass of 1,2-hexanediol is contained, and a mass ratio of the trimethylolpropane to the 3-methyl-1,5-pentanediol is 0.12 or more and 2 or less.
Claims6
An ink composition comprising:
- 3-methyl-1,5-pentanediol;
- trimethylolpropane;
- diethylene glycol-2-ethylhexyl ether in an amount that ranges between 0.1% by mass or more and 0.5% by mass or less relative to a total mass of the ink composition;
- water;
- and
- a pigment,
- wherein no more than 0.5% by mass of 1,2-hexanediol is contained, and
- a mass ratio of the trimethylolpropane to the 3-methyl-1,5-pentanediol is 0.12 or more and 2 or less.
5 more elements
Dependencies are inferred from the claim text.