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. 25, 2014
Filed:
Jan. 09, 2012
Applicants:
Kensuke Masuda, Kanagawa, JP;
Yukio Itami, Kanagawa, JP;
Shigeaki Imai, Kanagawa, JP;
Inventors:
Assignee:
Ricoh Company, Limited, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B41J 27/00 (2006.01); B41J 2/435 (2006.01); B41J 2/47 (2006.01); G02B 26/12 (2006.01);
U.S. Cl.
CPC ...
B41J 2/473 (2013.01); G02B 26/123 (2013.01); G02B 26/124 (2013.01);
Abstract
An optical scanning device includes: a light source unit; a light deflecting unit that deflects a light beam emitted from the light source unit; a scanning optical device that focuses the light beam deflected by the light deflecting unit on a scanned surface; and a light shielding member. The scanning optical device is provided in a direction in which a sound pressure level of a noise caused by rotation of a rotating polygon mirror included in the light deflecting unit is highest.