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.

Date of Patent:
May. 07, 2019

Filed:

Jan. 20, 2016
Applicants:

Akihiko Matsuyama, Shizuoka, JP;

Hiroshi Gotou, Shizouka, JP;

Michihiko Namba, Kanagawa, JP;

Hidetoshi Fujii, Kanagawa, JP;

Amika Sagara, Tokyo, JP;

Kazukiyo Nagai, Shizuoka, JP;

Tomoyuki Shimada, Shizuoka, JP;

Shigeyuki Harada, Shizuoka, JP;

Yoshiki Yanagawa, Shizuoka, JP;

Akiyoshi Sabu, Shizuoka, JP;

Yuusuke Koizuka, Shizuoka, JP;

Masayuki Fukuoka, Tokyo, JP;

Takuya Yamazaki, Shizuoka, JP;

Inventors:

Akihiko Matsuyama, Shizuoka, JP;

Hiroshi Gotou, Shizouka, JP;

Michihiko Namba, Kanagawa, JP;

Hidetoshi Fujii, Kanagawa, JP;

Amika Sagara, Tokyo, JP;

Kazukiyo Nagai, Shizuoka, JP;

Tomoyuki Shimada, Shizuoka, JP;

Shigeyuki Harada, Shizuoka, JP;

Yoshiki Yanagawa, Shizuoka, JP;

Akiyoshi Sabu, Shizuoka, JP;

Yuusuke Koizuka, Shizuoka, JP;

Masayuki Fukuoka, Tokyo, JP;

Takuya Yamazaki, Shizuoka, JP;

Assignee:

Ricoh Company, Ltd., Tokyo, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09D 11/322 (2014.01); C09D 11/10 (2014.01); C09D 11/12 (2006.01);
U.S. Cl.
CPC ...
C09D 11/322 (2013.01); C09D 11/10 (2013.01); C09D 11/12 (2013.01);
Abstract

An ink includes a pigment, a wax, a water soluble solvent including a solvent having an SP value of from 9.0 to 11.0, and water, wherein the mass ratio of the content of the wax in the ink to the content of the solvent having an SP value of from 9.0 to 11.0 is in a range of from 1.0:2.5 to 1.0:25.0.


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