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:
Jan. 09, 2001
Filed:
Nov. 05, 1998
Teruhiko Fujikura, Aichi-Ken, JP;
Toshikazu Higashi, Toyokawa, JP;
Tomonobu Tamura, Aichi-Ken, JP;
Akira Takasu, Toyokawa, JP;
Minolta Co., Ltd., Osaka, JP;
Abstract
A rotational shaft of a photosensitive drum is connected to a rotational shaft of a stepping motor by a coupling, so that the stepping motor directly drives the photosensitive drum. Here, &thgr; (°) indicating a step angle of the stepping motor, p (mm) indicating a distance between scanning lines on the photosensitive drum, &pgr; indicating the circular constant, and d (mm) indicating a diameter of the photosensitive drum are set so as to satisfy an equation n·&thgr;=(360·p)/(&pgr;·d) to make an optical unit scan the photosensitive drum by one scanning line every time the photosensitive drum is made to rotate n steps, n being a positive integer.