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:
Feb. 21, 1989
Filed:
Jul. 19, 1988
Applicant:
Inventors:
Tadao Kishimoto, Hachioji, JP;
Toshifumi Isobe, Hachioji, JP;
Hiroyuki Maruyama, Hachioji, JP;
Jun Yokobori, Hachioji, JP;
Assignee:
Konishiroku Photo Industry Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
355-4 ; 355 15 ;
Abstract
An image forming apparatus for conducting writing and developing operations several times on an image retainer and transferring the developed images to a transfer material. An output of a developing bias power source is sequentially distributed to a plurality of developing devices in the order in which the image retainer moves from an image signal writing device and the beginning of the abutment of a cleaning member against the image retainer and the beginning of the release from the abutment fall at timing other than at least the image writing timing.