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:
Sep. 23, 2014
Filed:
Mar. 30, 2012
Hideo Yoshizawa, Kanagawa, JP;
Kiyonori Tsuda, Kanagawa, JP;
Takuzi Yoneda, Tokyo, JP;
Emi Kita, Kanagawa, JP;
Yutaka Takahashi, Kanagawa, JP;
Yuki Oshikawa, Kanagawa, JP;
Kohichi Utsunomiya, Kanagawa, JP;
Hideo Yoshizawa, Kanagawa, JP;
Kiyonori Tsuda, Kanagawa, JP;
Takuzi Yoneda, Tokyo, JP;
Emi Kita, Kanagawa, JP;
Yutaka Takahashi, Kanagawa, JP;
Yuki Oshikawa, Kanagawa, JP;
Kohichi Utsunomiya, 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 in the development casing to carry developer, a magnetic field generator disposed inside the developer bearer, a developer regulator extending in an axial direction of the developer bearer to adjust an amount of developer carried on the developer bearer, and a first axial end seal provided in an axial end portion of the development device outside an image range, in contact with an upstream face of the developer regulator to reduce a size of a clearance between the developer regulator and the development casing.