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:
Nov. 30, 2021
Filed:
Jun. 01, 2020
Applicant:
Ricoh Company, Ltd., Tokyo, JP;
Inventors:
Tomohiro Nakagawa, Kanagawa, JP;
Hiroki Hagiwara, Kanagawa, JP;
Yuutaroh Nonaka, Kanagawa, JP;
Kazuhiko Umemura, Kanagawa, JP;
Assignee:
RICOH COMPANY, LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09D 11/322 (2014.01); B41M 5/00 (2006.01); C09B 29/28 (2006.01); C09D 11/033 (2014.01); C09D 11/037 (2014.01); C09D 11/38 (2014.01); D06P 5/30 (2006.01); D21H 19/42 (2006.01); D21H 19/46 (2006.01); B41J 2/21 (2006.01); B41J 2/01 (2006.01);
U.S. Cl.
CPC ...
C09D 11/322 (2013.01); B41J 2/01 (2013.01); B41J 2/2107 (2013.01); B41M 5/0023 (2013.01); C09B 29/28 (2013.01); C09D 11/033 (2013.01); C09D 11/037 (2013.01); C09D 11/38 (2013.01); D06P 5/30 (2013.01); D21H 19/42 (2013.01); D21H 19/46 (2013.01);
Abstract
An ink includes water, a compound represented by the following Chemical formula 1, Pigment Red 269 represented by the following Chemical formula 2, and alkylene glycol alkyl ether, wherein the proportion of the compound represented by the following Chemical formula 1 in a total amount of the Pigment Red 269 is 2 or less percent by mass.