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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.:

US 6420807 B1

PDFFull Text
Date of Patent:
Jul. 16, 2002

Filed:

Mar. 09, 2000

Rotator driving device, image forming apparatus using the rotator driving device, and method of driving rotator

Applicant:
Inventors:

Takahiro Tsujimoto, Toyokawa, JP;

Akira Takasu, Toyokawa, JP;

Teruhiko Fujikura, Aichi-Ken, JP;

Hideki Matsuura, Aichi-Ken, JP;

Ichiro Bessho, Aichi-Ken, JP;

Assignee:

Minolta Co., Ltd., Osaka, JP;

Attorney:

McDermott, Will & Emery

Primary Examiner:

Tran Nguyen

Assistant Examiner:

Dang Dinh Le

Int. Cl.
CPC ...
H02K 7/06 ; G03G 1/500 ;
U.S. Cl.
CPC ...
H02K 7/06 ; G03G 1/500 ;
Abstract

Rotational force of a driving motor is transferred to a photosensitive drum via a planetary-roller reduction device, so that the photosensitive drum is rotated. A speed detector set on the shaft of the photosensitive drum detects the rotational speed of the photosensitive drum. In accordance with the detected rotational speed of the photosensitive drum, the rotational speed of the driving motor is adjusted so that the photosensitive drum is rotated at a constant speed.

Find Patent Forward Citations

Tsujimoto, Takahiro. (2002). Rotator driving device, image forming apparatus using the rotator driving device, and method of driving rotator (U.S. Patent No. 6420807). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6420807

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