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. 21, 2011
Filed:
Jan. 28, 2008
Tomohiro Kubota, Osaka, JP;
Kenzo Tatsumi, Osaka, JP;
Yoshihiro Kawakami, Hyogo, JP;
Yoshiyuki Shimizu, Osaka, JP;
Hirobumi Ooyoshi, Tokyo, JP;
Tomofumi Yoshida, Tokyo, JP;
Koji Kato, Tokyo, JP;
Tomohiro Kubota, Osaka, JP;
Kenzo Tatsumi, Osaka, JP;
Yoshihiro Kawakami, Hyogo, JP;
Yoshiyuki Shimizu, Osaka, JP;
Hirobumi Ooyoshi, Tokyo, JP;
Tomofumi Yoshida, Tokyo, JP;
Koji Kato, Tokyo, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A developing device configured such that the developing device or the like can be easily inserted and removed without increasing the size of the apparatus, and an image forming apparatus that uses this developing device as well as a process cartridge. The developing device is provided with a first rib formed projecting from a first main wall surface, which is the side surface with the maximum area in the chassis of the developing device, and a second rib formed projecting from a second main wall surface, which is the side surface in opposition to the first main wall surface, the first rib being disposed in a position higher than the second rib in the height direction.