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:
May. 16, 2006
Filed:
Oct. 27, 2003
Satoru Yamamoto, Ibaragi, JP;
Eiichi Motoyama, Tokyo, JP;
Shokyo Koh, Ibaragi, JP;
Mitsuhiko Sato, Chiba, JP;
Takashi Fujimori, Ibaragi, JP;
Hidenori Sunada, Ibaragi, JP;
Satoru Yamamoto, Ibaragi, JP;
Eiichi Motoyama, Tokyo, JP;
Shokyo Koh, Ibaragi, JP;
Mitsuhiko Sato, Chiba, JP;
Takashi Fujimori, Ibaragi, JP;
Hidenori Sunada, Ibaragi, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
The present invention provides an image forming apparatus which, when switching operation from color image forming operation to monochromatic image forming operation, forms a monochromatic image on each of a prescribed number of sheets by stopping a part of the functions of yellow, magenta and cyan image forming sections of the color image forming operation, and thereafter, forms a monochromatic image only with a black-only image forming section, thereby permitting extension of service life of the image forming sections, while improving the productivity.