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, 2011
Filed:
Mar. 05, 2008
Hiroaki Katoh, Nagaokakyo, JP;
Masayuki Hagi, Minoo, JP;
Yoshihiro Mikuriya, Nishinomiya, JP;
Hideaki Yasunaga, Ibaraki, JP;
Yoshitaka Sekiguchi, Nishinomiya, JP;
Kazuoki Fuwa, Toyonaka, JP;
Masahide Inoue, Numazu, JP;
Hiroaki Katoh, Nagaokakyo, JP;
Masayuki Hagi, Minoo, JP;
Yoshihiro Mikuriya, Nishinomiya, JP;
Hideaki Yasunaga, Ibaraki, JP;
Yoshitaka Sekiguchi, Nishinomiya, JP;
Kazuoki Fuwa, Toyonaka, JP;
Masahide Inoue, Numazu, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A developing device including a developer bearing member configured to feed a developer to an image bearing member; a developer supplying member, which is contacted with the developer bearing member at a first nip while opposed thereto and which is configured to supply the developer to the developer bearing member; and a developer layer forming member, which is contacted with the developer bearing member at a second nip located on the downstream side from the first nip relative to the rotation direction of the developer bearing member to form the layer of the developer on the developer bearing member, wherein the developer is a nonmagnetic one component developer, and the distance between the front edge of the second nip and the rear edge of the first nip relative to the rotation direction of the image bearing member is greater than 0.8 mm and less than 2.0 mm.