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:
Mar. 26, 2013
Filed:
Dec. 16, 2010
Yoshihiro Yamagishi, Osaka, JP;
Eiji Nimura, Osaka, JP;
Takahisa Nakaue, Osaka, JP;
Ikuo Makie, Osaka, JP;
Masaki Hayashi, Osaka, JP;
Koji Kuramashi, Osaka, JP;
Kenichi Tamaki, Osaka, JP;
Yoshihiro Yamagishi, Osaka, JP;
Eiji Nimura, Osaka, JP;
Takahisa Nakaue, Osaka, JP;
Ikuo Makie, Osaka, JP;
Masaki Hayashi, Osaka, JP;
Koji Kuramashi, Osaka, JP;
Kenichi Tamaki, Osaka, JP;
Kyocera Mita Corporation, Osaka, JP;
Abstract
A developing device includes: a developing roller incorporating a fixed magnet body having a plurality of magnetic poles in a circumferential direction; a regulating member for regulating an amount of toner on the developing roller by means of a magnetic field formed by the regulating member and the fixed magnet body; and a magnetic-field generating member for scraping off, on an upstream of the regulating member in a rotational direction of the developing roller, toner which is not used for development on the developing roller. A relation Bm/Br>1 is satisfied, where Br represents a magnetic flux density of a distal end portion of the regulating member facing a surface of the developing roller and Bm represents a magnetic flux density of a distal end portion of the magnetic-field generating member facing the surface of the developing roller.