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. 23, 2017
Filed:
Mar. 26, 2015
Seiko Epson Corporation, Tokyo, JP;
Seiko Epson Corporation, , JP;
Abstract
An ink composition includes a pigment; polymer particles; and a polar solvent with a boiling point of 150° C. or higher, in which the polymer particles include a core polymer and a shell polymer that covers at least a portion of the core polymer, a glass transition point of the polymer that configures the core polymer is more than 30° C. lower than the glass transition point of the polymer that configures the shell polymer, the polymer that configures the shell polymer includes a polymer having a (meth)acrylate monomer unit and a carboxylic acid monomer unit, the content (solid content conversion) of the polymer particles is 1.0 mass % to 10 mass % with respect to the total amount of the ink composition, and the content of the polar solvent is 10 mass % to 40 mass % of the total amount of the ink composition.