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:
Jun. 19, 2018
Filed:
Jan. 20, 2016
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventor:
Soichi Yamazaki, Shiojiri, JP;
Assignee:
Seiko Epson Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/21 (2006.01); C09D 11/40 (2014.01); B41J 2/165 (2006.01); C09D 11/324 (2014.01); C09D 11/38 (2014.01);
U.S. Cl.
CPC ...
C09D 11/40 (2013.01); B41J 2/1652 (2013.01); B41J 2/16508 (2013.01); B41J 2/16532 (2013.01); B41J 2/16535 (2013.01); B41J 2/16585 (2013.01); B41J 2/2107 (2013.01); C09D 11/324 (2013.01); C09D 11/38 (2013.01);
Abstract
Provided is an ink set including black ink and color ink, in which the black ink contains carbon black having a carboxyl group on a surface thereof, a resin particle having a carboxyl group on a surface thereof, betaine, an alkali ion, and water, the alkali ion contains a potassium ion, a sodium ion, and an organic alkali compound, and a content of the potassium ion is the largest among the alkali ions.