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. 01, 2011
Filed:
Jan. 11, 2008
Hiroya Abe, Yokohama, JP;
Tsuyoshi Imamura, Sagamihara, JP;
Kyohta Koetsuka, Fujisawa, JP;
Tadaaki Hattori, Hatano, JP;
Yoshiyuki Takano, Hachioji, JP;
Noriyuki Kamiya, Yamato, JP;
Masayuki Ohsawa, Atsugi, JP;
Mieko Terashima, Isehara, JP;
Takashi Innami, Atsugi, JP;
Hiroya Abe, Yokohama, JP;
Tsuyoshi Imamura, Sagamihara, JP;
Kyohta Koetsuka, Fujisawa, JP;
Tadaaki Hattori, Hatano, JP;
Yoshiyuki Takano, Hachioji, JP;
Noriyuki Kamiya, Yamato, JP;
Masayuki Ohsawa, Atsugi, JP;
Mieko Terashima, Isehara, JP;
Takashi Innami, Atsugi, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A magnetic particle carrying device includes a magnetic field generator and a hollow cylindrical structure. The magnetic field generator generates a magnetic field. The hollow cylindrical structure encases the magnetic field generator and attracts magnetic particles on an external surface of the hollow structure using the magnetic field. The external surface of the hollow cylindrical structure is provided with a plurality of elliptical depressions. The depressions include first type depressions and second type depressions. A long axis of a first type of elliptical depression is substantially extending in an axial direction of the hollow cylindrical structure, and a long axis of a second type of elliptical depression is substantially extending in a circumferential direction of the hollow cylindrical structure. The external surface of the hollow cylindrical structure has more elliptical depressions of the second type than elliptical depressions of the first type.