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:
May. 22, 2001
Filed:
Oct. 05, 1999
Yoshinobu Hada, Aichi-ken, JP;
Minolta Co., Ltd., Osaka, JP;
Abstract
At least two registration marks are formed for each of the reproduction colors cyan, magenta, yellow, and black. Each of the marks for each color is formed at a different position in the main scanning direction. Each position of the marks is detected, and the deviation is obtained for each color from the detection result. Using the obtained deviations, a correction approximation function is formulated that is used for determining writing positions for pixels of an image. In accordance with the correction approximation function, an image writing position at which an image forming unit starts writing is corrected, so that color deviations caused from various factors can be prevented.