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:
Oct. 17, 2023
Filed:
Jan. 21, 2021
Seiko Epson Corporation, Toyko, JP;
Yusuke Mizutaki, Shiojiri, JP;
Mitsuaki Kosaka, Minowa, JP;
Abstract
An aqueous ink jet ink composition according to the present embodiment is an aqueous ink jet ink composition for use in an ink jet recording method that includes ejecting ink from an ink jet head. The ink jet head includes nozzles that have a side wall surface, and the side wall surface has a scalloped shape in which a scallop width S1 and a notch depth S2 satisfy S1/S2≥4. The aqueous ink jet ink composition includes a self-dispersed pigment and a solvent that includes a compound represented by formula (1) below.R—O—R—OH  (1) In formula (1), Rrepresents a hydrogen atom, a methyl group, or an ethyl group, and Rrepresents a divalent saturated hydrocarbon group having 5 or fewer carbon atoms or represents a group represented by formula (2) below.R—O—R  (2) In formula (2), Rand Reach independently represent a divalent saturated hydrocarbon group having 2 or 3 carbon atoms.