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:
Aug. 27, 1996
Filed:
Nov. 30, 1994
Yoji Serizawa, Yokohama, JP;
Yukihide Ushio, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image forming apparatus for scanning a light beam modulated in accordance with image information using a rotational polygon mirror comprises a light beam generator for generating the light beam, an adjuster for adjusting the light quantity of the light beam generated by the light beam generator, a driver for driving the rotational polygon mirror in rotation, and a detector for detecting whether the rotational number of the rotational polygon mirror reaches a predetermined rotation number within a predetermined time. The light quantity adjuster starts the light quantity adjustment after the start of driving of the rotational polygon mirror with the driver, and before the rotation number of the rotational polygon mirror reaches the predetermined rotation number.