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:
Apr. 14, 1987
Filed:
Jun. 18, 1985
Applicant:
Inventors:
Yukimasa Kuramoto, Takarazuka, JP;
Eiichiro Tanaka, Kishiwada, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Kadoma, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ; G03G / ;
U.S. Cl.
CPC ...
355 / ; 355 / ; 355 / ; 355 / ;
Abstract
An electrophotographic apparatus which includes a photoreceptor mainly composed of amorphous silicone and a developing device employing a developing material including electrically insulative composite components. The developing device has a developing sleeve impressed with developing bias voltage on which AC voltage is superposed, and a magnetic roller having magnetic poles and accommodated within the developing sleeve.
Kuramoto, Yukimasa. (1987). Development system for photoreceptor having surface potential and a (U.S. Patent No. 4657374). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4657374
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile