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. 15, 2011
Filed:
Sep. 08, 2009
Masayuki Ohsawa, Atsugi, JP;
Tadaaki Hattori, Hadano, JP;
Kyohta Koetsuka, Fujisawa, JP;
Yoshiyuki Takano, Hachiohji, JP;
Noriyuki Kamiya, Yamato, JP;
Rei Suzuki, Atsugi, JP;
Hiroya Abe, Yokohama, JP;
Takashi Innami, Atsugi, JP;
Masayuki Ohsawa, Atsugi, JP;
Tadaaki Hattori, Hadano, JP;
Kyohta Koetsuka, Fujisawa, JP;
Yoshiyuki Takano, Hachiohji, JP;
Noriyuki Kamiya, Yamato, JP;
Rei Suzuki, Atsugi, JP;
Hiroya Abe, Yokohama, JP;
Takashi Innami, Atsugi, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A developer carrier includes a magnetic field generating device provided with a plurality of magnetic poles including an agent separating pole and a scooping pole, and a cylindrical hollow body accommodating therein the magnetic field generating device and rotated around an axis of the cylindrical hollow body. A half-value width of a magnetic flux density at both end portions of at least one magnetic pole of the agent separating pole and the scooping pole is formed to be identical to or narrower than a half-value width of the magnetic flux density at a central portion of the one magnetic pole.