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:
Jan. 16, 1990
Filed:
Mar. 09, 1988
Applicant:
Inventors:
Hisao Nakajima, Kawasaki, JP;
Ken Tanabe, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03L / ;
U.S. Cl.
CPC ...
355207 ; 355245 ; 355326 ;
Abstract
An image forming apparatus includes a main assembly having a developing position, an opening for receiving and delivering developing devices and developing device transportation passage for communicating the developing position and the opening; a developing device accommodating device for accommodating a plurality of the developing devices and for supplying them to the opening; a detecting device for detecting a malfunction of an image forming operation; and a device for transporting the developing device to either the main assembly or the developing device accommodating device in response to detection by the detecting device.