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. 16, 1999
Filed:
Sep. 22, 1994
Naoki Enomoto, Yokohama, JP;
Takao Aoki, Abiko, JP;
Haruo Fujii, Yokohama, JP;
Hiroshi Sasame, Yokohama, JP;
Tatsuhiko Hayakawa, Tokyo, JP;
Tatsuya Kobayashi, Soka, JP;
Tetsuya Kobayashi, Kawasaki, JP;
Akihiko Uchiyama, Yokohama, JP;
Yoshiro Saito, Yokohama, JP;
Yoichiro Maebashi, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A color image forming apparatus having a plurality of developers is disclosed. The apparatus includes a photosensitive drum, a density sensor for detecting a developed control toner image, CPU and RAM. The apparatus performs a first control for image formation based on a density of a control toner image developed by a first developer, a second control for image formation based on a density of a control toner image developed by a second developer, and determining whether the second control is to be performed based on the density of the control toner image developed by the first developer.