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. 14, 2006
Filed:
Oct. 26, 2005
Hiroki Yoshida, Utsunomiya, JP;
Yoshihiro Ishibe, Utsunomiya, JP;
Hiroki Yoshida, Utsunomiya, JP;
Yoshihiro Ishibe, Utsunomiya, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A light scanning apparatus capable of printing with a high quality and an image forming apparatus using the same are obtained. The light scanning apparatus is provided with an incidence optical system for guiding a light beam emitted from a light source part to a deflection part; an imaging optical system provided with a diffracting surface having a power at least in a sub-scanning section that guides the light beam deflected by the deflection part on a surface to be scanned; and a surface inclination correction function, in which a principal ray of the light beam is always positioned outside of a main scanning section during scanning. In the light scanning apparatus, each element is set so as to satisfy each conditional expression.