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:
Apr. 07, 1992
Filed:
Dec. 20, 1990
Yoshihiko Hirose, Yokohama, JP;
Hitoshi Arai, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A scanning optical apparatus according to the present invention comprises a light source, a modulator for modulating a light flux emitted from the light source, an image forming device for forming an image of the light flux from the light source to a predetermined position, a deflector for deflecting the light flux from the light source in a predetermined position, a photosensitive device for sensing the light flux deflected by the deflector, an adjusting device for adjusting an image forming position of the light flux by the image forming device in correspondence to a signal obtained by the photosensitive device and an inhibiting device when the light flux emitted from the light source is being modulated by the modulator in correspondence to a predetermined signal. By the scanning optical apparatus of the invention, the focal deviation can be always stably corrected and a stable image with high density can be obtained.