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:
Oct. 13, 2009
Filed:
Jun. 29, 2006
Koji Izumi, Osaka, JP;
Chisato Hatakeyama, Osaka, JP;
Koji Izumi, Osaka, JP;
Chisato Hatakeyama, Osaka, JP;
Kyocera Mita Corporation, Osaka, JP;
Abstract
A developing device including a first developing roller and a roller drive mechanism is disclosed. The first developing roller comprises a tubular sleeve, on the surface of which developer is supplied, and a magnetic roller that comprises a drawing magnetic pole for drawing developer and a peel-off magnetic pole for peeling off developer, both of which are arranged on the inner circumference of the sleeve. The drawing magnetic pole is arranged to be adjacent to and upstream of the peel-off magnetic pole in the first rotational direction, in which the magnetic roller rotates during an image forming operation. The roller drive mechanism rotates the magnetic roller in the first rotational direction during the image forming operation, and can rotate the magnetic roller in a second rotational direction that is opposite the first rotational direction.