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:
Nov. 21, 1995
Filed:
Mar. 16, 1994
Applicant:
Inventors:
Yasushi Saitoh, Osaka, JP;
Masashi Matsumoto, Osaka, JP;
Takao Ichihashi, Osaka, JP;
Shuji Yamada, Osaka, JP;
Assignee:
Mita Industrial Co., Ltd., Osaka, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
355225 ; 355208 ; 355219 ;
Abstract
For an image forming apparatus having a photoreceptor whose surface is charged by a main charger unit, a function is provided that a desired electric potential is attained on the photoreceptor surface by applying a lowest main charging voltage to the charger unit. By providing a plurality of grid voltages, it is possible that there are a plurality of main charging voltages suitable for the desired surface potential, and the lowest main charging voltage and the corresponding grid voltage can be selected thereamong.