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. 10, 2018
Filed:
May. 23, 2017
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventors:
Shintaro Hama, Shiojiri, JP;
Ryosuke Teramoto, Matsumoto, JP;
Yuho Miyake, Shiojiri, JP;
Tetsuya Aoyama, Shiojiri, JP;
Assignee:
Seiko Epson Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/165 (2006.01); C09D 11/40 (2014.01); C09D 11/033 (2014.01); C09D 11/322 (2014.01); C09D 11/328 (2014.01); C09D 11/037 (2014.01); C09D 11/30 (2014.01); C09D 11/54 (2014.01);
U.S. Cl.
CPC ...
B41J 2/16505 (2013.01); C09D 11/033 (2013.01); C09D 11/037 (2013.01); C09D 11/30 (2013.01); C09D 11/322 (2013.01); C09D 11/328 (2013.01); C09D 11/40 (2013.01); C09D 11/54 (2013.01);
Abstract
An aqueous ink set for ink jet recording includes an aqueous pigment ink containing water and a pigment as a coloring agent and an aqueous dye ink containing water and a dye as a coloring agent, in which the concentration of the divalent metal ions of the pigment ink is 10 ppm or more, and the potassium ion concentration of the dye ink is 50 ppm or less.