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:
Jan. 12, 2010
Filed:
Oct. 10, 2008
Asami Kotera, Osaka, JP;
Eiji Nimura, Osaka, JP;
Asami Kotera, Osaka, JP;
Eiji Nimura, Osaka, JP;
Kyocera Mita Corporation, Osaka, JP;
Abstract
A developing device is disclosed which includes a fixed magnet rollerhaving a plurality of magnetic poles, a development rollerhaving a development sleevethat is supported axially with the ability to rotate freely, and a magnetic sealing memberarranged at the end of the longitudinal direction X of the development sleeve. Further, the length of each of the plurality of magnetic poles not facing the magnetic sealing member(in other words, the development pole SI, lead-in pole N, and blade pole N) of the fixed magnet rollerare shorter than the length of each of the plurality of magnetic poles facing the magnetic sealing member. Accordingly, the magnetic toner retained on the peripheral surface of the development sleeveis guided to the development area side in the longitudinal direction X of the development sleeve