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. 03, 2011
Filed:
Dec. 22, 2008
Masaaki Ishida, Kanagawa, JP;
Yasuhiro Nihei, Kanagawa, JP;
Atsufumi Omori, Kanagawa, JP;
Dan Ozasa, Kanagawa, JP;
Jun Tanabe, Kanagawa, JP;
Masaaki Ishida, Kanagawa, JP;
Yasuhiro Nihei, Kanagawa, JP;
Atsufumi Omori, Kanagawa, JP;
Dan Ozasa, Kanagawa, JP;
Jun Tanabe, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An image forming apparatus includes an optical scanning device that scans a scan area on an image carrier with light flux containing image information and writes the image information onto an image area in the scan area. In the optical scanning device, a first light receiving unit receives light flux emitted from a light source and reflected by a reflecting optical unit; a second light receiving unit receives light flux that passes through an aperture of the reflecting optical unit, is deflected by a deflecting unit, and heads for outside the image area within the scan area; and a control unit controls a drive signal of the light source based on signals output from the first and second light receiving units.