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. 26, 2004
Filed:
Aug. 25, 2003
Kazuhiro Ishiguro, Toyohashi, JP;
Yoshihiko Hirota, Toyokawa, JP;
Minolta Co., Ltd., Osaka, JP;
Abstract
It is intended to provide an image forming apparatus and image forming method capable of partial magnification corrections on various partial variations of magnification as well as constant and uniform positional shift regardless of any sections. A modulated image clock of a reference color (black) is generated from a clock generated at an image clock generating section and an address is generated at an address generating circuit basing on the modulated image clock. Output sections for respective colors other than the reference color read out correction coefficients from correction coefficient memories of respective colors following the address generated. Frequency modulator circuits modulate image clocks in accordance with correction coefficients. PWM outputs a driving pulse to a laser driver basing on modulated image clocks synchronized with a reference signal by synchronizer circuits and inputted image data.