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:
Jul. 25, 2017
Filed:
Apr. 15, 2015
Seiko Epson Corporation, Tokyo, JP;
Akira Mizutani, Shiojiri, JP;
Takayoshi Kagata, Shiojiri, JP;
Masahiro Yatake, Shiojiri, JP;
Hiroshi Mukai, Shiojiri, JP;
Seiko Epson Corporation, , JP;
Abstract
An ink composition includes a color material, water, and polymer particles, in which the polymer particle has a core-shell structure having a core polymer and a shell polymer, a glass transition temperature of the core polymer is 30° C. or higher, a glass transition temperature of the shell polymer is 50° C. or higher, the glass transition temperature of the shell polymer is more than 10° C. higher than the glass transition temperature of the core polymer, and the core polymer includes an aromatic monomer as a constituent unit and does not substantially include an alkyl polyol having a standard boiling point of 280° C. or higher.