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. 03, 2009
Filed:
Feb. 17, 2006
Kazuosa Kuma, Kanagawa, JP;
Mitsuru Takahashi, Kanagawa, JP;
Kazuchika Saeki, Kanagawa, JP;
Tsutomu Katoh, Kanagawa, JP;
Takeshi Fukao, Kanagawa, JP;
Yoshiharu Kishi, Kanagawa, JP;
Kazuosa Kuma, Kanagawa, JP;
Mitsuru Takahashi, Kanagawa, JP;
Kazuchika Saeki, Kanagawa, JP;
Tsutomu Katoh, Kanagawa, JP;
Takeshi Fukao, Kanagawa, JP;
Yoshiharu Kishi, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
One end of a rotational shaft of a supporting rotational body attached with a rotational member is rotatably supported. The rotational member is sandwiched by a supporting frame that rotatably supports supporting rotational bodies spanned with an annular belt and fixing members fixed to the supporting frame. Thus, the one end of the rotational shaft is supported by the supporting frame and the fixing members at, at least two points. A mark detector is fixed to the fixing members, and the fixing members are fixed to the supporting frame at, at least two points. Accordingly, erroneous detection of a rotational angular speed or a rotational angular displacement of a supporting rotational body due to vibration of the supporting rotational body can be suppressed.