The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 20, 2025
Filed:
Mar. 28, 2023
Seiko Epson Corporation, Tokyo, JP;
Kei Hiruma, Chino, JP;
Mitsunobu Nakatani, Shiojiri, JP;
Tomoyuki Ushiyama, Chino, JP;
Kenta Tsukada, Shiojiri, JP;
SEIKO EPSON CORPORATION, , JP;
Abstract
An ink jet ink composition contains a metal pigment and at least one liquid medium selected from the group consisting of organic solvents and water. The metal pigment is surface-modified with a surface treatment agent. The metal pigment is in the form of scale-like particles and has a volume average particle size Dof 1.0 μm or less. The ratio D/Z of the volume average particle size Dof the metal pigment to the average thickness Z of the metal pigment particles is 17 or more, and the ratio D/L of the volume average particle size Dto the nozzle diameter L of the ink jet head is 0.050 or less.