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:
Nov. 02, 2010
Filed:
Apr. 01, 2008
Masayoshi Nakayama, Tokyo, JP;
Yoshitaka Fujinuma, Tokyo, JP;
Susumu Tateyama, Tokyo, JP;
Tatsuya Kubo, Tokyo, JP;
Masayoshi Nakayama, Tokyo, JP;
Yoshitaka Fujinuma, Tokyo, JP;
Susumu Tateyama, Tokyo, JP;
Tatsuya Kubo, Tokyo, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A disclosed developing device includes a developer carrier including a developing sleeve and a magnetic roller provided inside the developing sleeve. The magnet roller includes a regulating magnetic pole and a pump-up magnetic pole that have different polarities from each other. Among an entire region of the moving surface of the developing sleeve in the surface movement direction, a maximum pump-up magnetic force position where the pump-up magnetic force of the pump-up magnetic pole is maximum faces an upstream position with respect to a supplying position at which the developer is supplied from a supplying screw to the developing sleeve.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile