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US 9,309,430 B2Granted
Pigment dispersion liquid and solvent-based ink composition containing the same
AssigneeSeiko Epson Corporation
InventorsNaoyuki Toyoda, Masaru Terada, Hiroshi Takiguchi, Tomohiro Ogawa, Atsushi Denda
Life of this patent
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Abstract
A pigment dispersion liquid is a pigment dispersion liquid for a solvent-based ink including a base metal pigment and an organic solvent, in which the base metal pigment is subjected to a surface treatment by a fluorine-based compound, and in which the concentration of a fluorine element is from 8 atm % to 35 atm % when an X-ray photoelectron spectroscopy (XPS) analysis of the surface of the base metal pigment is performed.
Claims19
A pigment dispersion liquid for a solvent-based ink, comprising:
- a base metal pigment;
- and an organic solvent, wherein the shape of the base metal pigment is plate-shaped, and wherein the base motel pigment is subjected to a surface treatment by a fluorine-based compound, and wherein the concentration of a fluorine element is from 8 atm % to 35 atm % when an X-ray photoelectron spectroscopy (XPS) analysis of the surface of the base metal pigment is performed.
Dependencies are inferred from the claim text.