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:
Jan. 01, 2002
Filed:
Jan. 05, 2001
Applicant:
Inventors:
Kazuhiro Ichikawa, Nagano, JP;
Yoshihiro Nakashima, Nagano, JP;
Hidenori Kin, Nagano, JP;
Tomoe Aruga, Nagano, JP;
Yoichi Yamada, Nagano, JP;
Yukio Takayama, Nagano, JP;
Tahei Ishiwatari, Nagano, JP;
Assignee:
Seiko Epson Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 1/508 ;
U.S. Cl.
CPC ...
G03G 1/508 ;
Abstract
A developing unit of the present invention includes a case which accommodates toner containing pigment, a developing roller, a supply roller formed of an elastic member arranged to be pressed against a surface of the developing roller in such a manner as to supply toner to the surface of the developing roller. The toner is mixed by conveying fins which have phases that are different in such a manner that the loads are uniform in rotation