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:
Jun. 28, 1988
Filed:
Nov. 17, 1986
Toshirou Kasamura, Yokohama, JP;
Akiyoshi Kimura, Tokyo, JP;
Masashi Ohashi, Tokyo, JP;
Yasuyoshi Yamamoto, Tokyo, JP;
Takashi Ozawa, Ichikawa, JP;
Toshihiko Kusumoto, Tokyo, JP;
Tatsuya Shiratori, Yokohama, JP;
Nobukazu Sasaki, Tokyo, JP;
Michiro Koike, Kawasaki, JP;
Atsushi Kubota, Machida, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image forming apparatus includes a plurality of the developing devices for developing the latent image formed on an image bearing member. The plural developing devices are each movable between its developing position for developing the latent image on the image bearing member and its retracted position away from the image bearing member. The image forming apparatus includes a shutter for selectively opening and closing the developing aperture of the developing device of one of the developing devices. The shutter opens and closes the developing aperture of said one of the developing devices in association with movement of the other developing device between the developing position and the retracted position.