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:
Dec. 30, 2014
Filed:
Mar. 26, 2012
Kiyonori Tsuda, Kanagawa, JP;
Hideo Yoshizawa, Kanagawa, JP;
Kohichi Utsunomiya, Kanagawa, JP;
Takuzi Yoneda, Tokyo, JP;
Yutaka Takahashi, Kanagawa, JP;
Emi Kita, Kanagawa, JP;
Yuki Oshikawa, Kanagawa, JP;
Kiyonori Tsuda, Kanagawa, JP;
Hideo Yoshizawa, Kanagawa, JP;
Kohichi Utsunomiya, Kanagawa, JP;
Takuzi Yoneda, Tokyo, JP;
Yutaka Takahashi, Kanagawa, JP;
Emi Kita, Kanagawa, JP;
Yuki Oshikawa, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A development device includes a development casing, a developer bearer disposed facing a latent image bearer through an opening formed in the development casing, a magnetic field generator, a developer regulator disposed facing the developer bearer, a first seal member to cover a clearance between the latent image bearer and a rim of the development casing upstream from the opening, and a second seal member. The first seal member includes a first end portion fixed to the rim of the development casing and a second end portion in contact with the latent image bearer, and the second seal member includes a first end portion fixed to an inner face of the development casing farther from the latent image bearer than the first seal member, and a second end portion hanging to contact the developer carried on the developer bearer downstream from the developer regulator.