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. 19, 2009
Filed:
Feb. 09, 2006
Naoya Yamasaki, Kanagawa, JP;
Shunichiro Shishikura, Kanagawa, JP;
Masayuki Aratake, Kanagawa, JP;
Shigeru Tsukada, Kanagawa, JP;
Naoya Yamasaki, Kanagawa, JP;
Shunichiro Shishikura, Kanagawa, JP;
Masayuki Aratake, Kanagawa, JP;
Shigeru Tsukada, Kanagawa, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
An image forming apparatus includes a rotary unit that has a rotary shaft, and a plurality of development devices each of which has a constituent unit, the development devices provided around the rotary shaft; and a plurality of state detection units that detects at least one of states of the development devices and states of the constituent unit; wherein the rotary unit is rotated so that the development devices sequentially pass a development position facing a photosensitive member; wherein when any of the development devices is located at the development position, the development device makes an electrostatic latent image on the photosensitive member visible; and wherein each of the state detection units detects at least one of the development devices and the states of the constituent unit during a single stop of rotation of the rotary unit.