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:
Apr. 29, 2008
Filed:
Apr. 08, 2004
Applicants:
Makoto Nakamura, Kanagawa, JP;
Mieko Kakegawa, Kanagawa, JP;
Sumio Kamoi, Tokyo, JP;
Tsuyoshi Imamura, Kanagawa, JP;
Kyohta Koetsuka, Kanagawa, JP;
Noriyuki Kamiya, Kanagawa, JP;
Inventors:
Makoto Nakamura, Kanagawa, JP;
Mieko Kakegawa, Kanagawa, JP;
Sumio Kamoi, Tokyo, JP;
Tsuyoshi Imamura, Kanagawa, JP;
Kyohta Koetsuka, Kanagawa, JP;
Noriyuki Kamiya, Kanagawa, JP;
Assignee:
Ricoh Company, Limited, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01F 7/00 (2006.01); G03G 15/09 (2006.01); H05B 6/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The long magnet includes a magnet block made of a mixture of rare earth magnetic powder, thermoplastic resin particles, fluidity additive, pigment, wax and charge control agent, and a reinforcing member to reinforce the magnet block. At least part of the reinforcing member is arranged inside of the magnet block.