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:
Mar. 17, 2015
Filed:
Feb. 13, 2013
Applicants:
Akiko Bannai, Kanagawa, JP;
Tomohiro Inoue, Kanagawa, JP;
Inventors:
Akiko Bannai, Kanagawa, JP;
Tomohiro Inoue, Kanagawa, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/17 (2006.01); B41J 2/175 (2006.01); C09D 11/322 (2014.01);
U.S. Cl.
CPC ...
B41J 2/17506 (2013.01); C09D 11/322 (2013.01);
Abstract
An ink cartridge including a holding member and an ink bag to accommodate ink, wherein the ink cartridge is replenished with pigment ink having a pH higher than a pH of residual ink remaining in the ink cartridge.