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. 15, 2014
Filed:
Nov. 16, 2012
Applicants:
Masayuki Ishii, Shizuoka, JP;
Toyoshi Sawada, Kanagawa, JP;
Inventors:
Masayuki Ishii, Shizuoka, JP;
Toyoshi Sawada, Kanagawa, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G03G 9/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
A toner including a mother particle and an external additive covering a surface of the mother particle is provided. The mother particle includes a binder resin, a colorant, and a release agent. The external additive includes a particulate cellulose having a number average particle diameter within a range of 15 to 105 nm.