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:
Aug. 05, 2025
Filed:
Mar. 29, 2023
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventors:
Hisashi Okamura, Shiojiri, JP;
Hidehiko Komatsu, Chino, JP;
Hiromi Noguchi, Shiojiri, JP;
Yuzuka Kumagai, Shiojiri, JP;
Yasuhiro Oki, Matsumoto, JP;
Assignee:
SEIKO EPSON CORPORATION, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09D 11/32 (2014.01); B41J 2/01 (2006.01); B41J 2/21 (2006.01); C09D 11/00 (2014.01); C09D 11/30 (2014.01); C09D 11/328 (2014.01);
U.S. Cl.
CPC ...
C09D 11/32 (2013.01); B41J 2/01 (2013.01); B41J 2/2107 (2013.01); C09D 11/00 (2013.01); C09D 11/30 (2013.01); C09D 11/328 (2013.01);
Abstract
An ink jet ink composition includes a coloring material, a water-soluble organic solvent, and water. The coloring material contains a compound (A) having Cr (chromium) as Me in a structure represented by formula (1) below, and a compound (B) having Co (cobalt) as Me in the structure represented by the formula (1) below, and the mass ratio of the compound (B) to the compound (A) is over 0 and 0.06 or less.