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. 26, 2000
Filed:
Apr. 06, 1999
Applicant:
Inventors:
Takashi Shibuya, Shizuoka-ken, JP;
Yoichiro Maebashi, Numazu, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
399 49 ; 399 50 ; 399 55 ;
Abstract
An image forming apparatus is constructed by: an image bearing member, a charging unit, a developing unit, and a density detecting unit, and densities of developer images as electrostatic latent images formed by changing the charging voltage and the developing voltage are detected by the density detecting unit and, on the basis of detection results, a charging voltage which is applied to the charging unit and a developing voltage which is applied to the developing unit are determined when an image is formed.