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:
Oct. 14, 1997
Filed:
Oct. 05, 1995
Hajime Osaki, Hachioji, JP;
Isao Matsuoka, Hachioji, JP;
Konica Corporation, Tokyo, JP;
Abstract
An image forming apparatus includes a rotational body having a rotation shaft, marks provided on a circumferential surface of the rotational body at a predetermined positional interval each other, a rotational photoreceptor provided on the rotation shaft, a driving system to drive the photoreceptor, a light source to emit a light onto the marks, a line sensor having a plurality of pixels in a row in which each pixel outputs an electric signal in accordance with a light intensity of the light projected, an image formation lens to focus the light reflected from the marks onto the plurality of pixels of the line sensor, a detector to detect a rotational information of the photoreceptor on the basis of the electric signal obtained by the line sensor. The apparatus further includes a control circuit to control the drive system on the basis of the rotational information detected by the detector to control a rotation of the photoreceptor.