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. 23, 2014
Filed:
Apr. 10, 2013
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventors:
Hiroshi Nakahata, Abiko, JP;
Toshiharu Mamiya, Yokohama, JP;
Yuta Okada, Moriya, JP;
Shinichiro Hosoi, Tokyo, JP;
Yasutomo Furuta, Abiko, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 15/14 (2006.01); B41J 27/00 (2006.01); G03G 15/041 (2006.01); G03G 15/043 (2006.01);
U.S. Cl.
CPC ...
G03G 15/0415 (2013.01); G03G 15/043 (2013.01);
Abstract
A resin BD lens having a property of refracting a light beam in a direction corresponding to a main scanning direction may cause a variation in generation timing difference among a plurality of horizontal synchronization signals and accordingly degrade accuracy to correct the starting position of an electrostatic latent image. The present invention uses a glass BD lens having a property of refracting a light beam in a direction corresponding to the main scanning direction.