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. 27, 2025
Filed:
Mar. 06, 2023
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventors:
Kenta Kikuchi, Suwa, JP;
Hiroaki Kumeta, Matsumoto, JP;
Satoshi Tsubamoto, Shiojiri, JP;
Koji Imamura, Shiojiri, JP;
Assignee:
SEIKO EPSON CORPORATION, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09D 11/38 (2014.01); C09D 11/326 (2014.01);
U.S. Cl.
CPC ...
C09D 11/38 (2013.01); C09D 11/326 (2013.01);
Abstract
An ink jet ink composition is a water-based ink jet ink composition and includes a vegetable black-derived colorant, a lignosulfonate salt, and an element A which includes at least one selected from the group consisting of Ca, Mg, Mn, Fe, Al, Si, Cr, Ni, Sr, and Ba, and a content of the element A with respect to a total mass of the ink composition is 50 to 1,700 mass ppm.