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:
Aug. 07, 1990
Filed:
Jul. 07, 1989
Applicant:
Inventors:
Assignee:
Matsushita Electric Industrial Co., Ltd., Kodama, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
355265 ; 355259 ; 355261 ; 355264 ; 118653 ;
Abstract
A developing device comprises a developer carrying means for carrying developer from a developer supplying means to an electrophotographic light-sensitive member having electrostatic latent image and a developer returning means for returning superfluous developer to the developer supplying means, thereby over-electrification of the developer is prevented.