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:
Nov. 06, 2012
Filed:
Jul. 01, 2010
Norihiro Yamamoto, Kanagawa, JP;
Hidetoshi Yamashita, Kanagawa, JP;
Norihiro Yamamoto, Kanagawa, JP;
Hidetoshi Yamashita, Kanagawa, JP;
Ricoh Company, Limited, Tokyo, JP;
Abstract
An image forming apparatus includes a light source that outputs a plurality of laser beams and a control unit that adjusts the light intensity of each of the laser beams. The control unit calculates a correction value so that, when the laser beam is driven by a control value calculated by correcting a common control value using the correction value and adding a threshold to the corrected control value, the light intensity of the laser beam is equal to a target light intensity. The threshold is calculated so that, when the laser beam is driven by a control value calculated by multiplying the corrected control value by a predetermined factor, and adding the threshold to the multiplied control value, the light intensity of the laser beam is equal to the target light intensity multiplied by the predetermined factor.