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:
Feb. 04, 2025
Filed:
Mar. 28, 2023
Seiko Epson Corporation, Tokyo, JP;
SEIKO EPSON CORPORATION, , JP;
Abstract
A printing ink jet ink composition of the present disclosure is an ink composition which includes an acidic dye; a water-soluble organic solvent; a lactam compound; and water, the acidic dye includes at least one selected from the group consisting of C.I. Acid Black 172 and C.I. Acid Black 52:1, a content of the acidic dye with respect to a total mass of the ink composition is 10 percent by mass or more, the water-soluble organic solvent includes a glycol ether compound having a standard boiling point of 195° C. to 290° C., the lactam compound includes at least one selected from the group consisting of 1-(2-hydroxyethyl)-2-pyrrolidone and ε-caprolactam, and a mass ratio of the lactam compound to the glycol ether compound is 3.5 to 20.