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:
May. 14, 2003
Seiichiro Mori, Tochigi, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A multibeam optical scanner has a plurality of light sources each of which has a plurality of light emission points. In order to reduce the influence of image misregistration between scan lines in the main scanning direction even in the state where positioning error between an optical scanner and a drum exists, the distance occupied by all of the spots on the surface to be scanned in the main scanning direction is set shorter than the distance in the main scanning direction between the lines that are set so as to pass the spots from the same light source among the plural light sources and extend over the distance occupied by all of the spots in the sub scanning direction.