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:
Sep. 17, 1991
Filed:
Feb. 08, 1991
Applicant:
Inventors:
Hitoshi Saito, Machida, JP;
Masami Eda, Itami, JP;
Assignee:
Minolta Camera Kabushiki Kaisha, Osaka, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
355219 ; 346160 ; 355223 ; 355271 ;
Abstract
An electrophotographic image forming apparatus with reversal development system, wherein a photosensitive member is charged to first polarity by a first charger and then charged to second polarity opposite to the first polarity by a second charger which is provided at downstream side of the first charger with respect to the rotational direction of the photosensitive member prior to an image formation so as to form uniform images regardless of the number of image formation.