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. 23, 2002
Filed:
Mar. 21, 2000
Toshihisa Matsuo, Nara, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A light beam deflection scanner includes a plural number of semiconductor laser beam elements which are correctable so that they emit beams having an amount of light equal to each other. A light amount correcting circuit in the light beam deflection scanner, effects a correcting process comprising the steps of: emitting a light beam with a predetermined voltage applied to one semiconductor laser beam element; measuring a recovery time from when the light beam detecting sensor detects the light beam until the output voltage from the light beam detecting sensor returns to a predetermined level of voltage, and correcting the light amount of the light beam of the semiconductor laser beam element based on the recovery time.