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:
Dec. 07, 2004
Filed:
Dec. 16, 2002
Tadaaki Suda, Saitama, JP;
PENTAX Corporation, Tokyo, JP;
Abstract
A multi-beam scanning apparatus has a scanning unit that has a plurality of semiconductor lasers and scans laser beams emitted from the plurality of semiconductor lasers; and a controller that transmits a standard signal associated with a control of the plurality of semiconductor lasers to the scanning unit. The controller has a standard signal generator that generates and outputs a sequence of pulse signals as the standard signal. The scanning unit has a plurality of laser drivers, a standard voltage generator, and a standard voltage setter. The standard voltage setter detects each of a plurality of common pulse signal sections of the standard signal in accordance with its signal-wave characteristic, and transmits each value of the plurality of standard voltage sections to a corresponding laser driver in accordance with a detected common pulse signal section.