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:
Apr. 11, 2017
Filed:
Jul. 11, 2014
Applicant:
Nippon Kayaku Kabushiki Kaisha, Tokyo, JP;
Inventors:
Assignee:
NIPPON KAYAKU KABUSHIKI KAISHA, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/15 (2006.01); C09D 11/40 (2014.01); C09D 11/322 (2014.01); C09D 11/03 (2014.01); B41J 2/21 (2006.01);
U.S. Cl.
CPC ...
C09D 11/40 (2013.01); B41J 2/21 (2013.01); C09D 11/03 (2013.01); C09D 11/322 (2013.01);
Abstract
An ink set including at least a yellow ink, a magenta ink, a cyan ink, and a black ink and that each contain water, a surfactant, and a colorant. When each of the surfactant contents in each of the total masses of the yellow ink, the magenta ink, the cyan ink, and the black ink is represented respectively by S1, S2, S3, and S4, S1 satisfies 1.0 mass %≦S1≦2.5 mass %, S1-S2 satisfies 0.1 mass %≦S1-S2≦0.8 mass %, S3-S2 satisfies 0.0 mass %≦S3-S2≦0.5 mass %, S3-S4 satisfies 0.2 mass %≦S3-S4≦1.2 mass %, and S3 and S4 are each 0.1 mass % or more.