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:
Jul. 26, 2011
Filed:
Sep. 09, 2008
Kazunori Bannai, Atsugi, JP;
Hideto Higaki, Yokohama, JP;
Daisuke Imaki, Sagamihara, JP;
Noboru Kusunose, Yokohama, JP;
Yoshinobu Sakaue, Machida, JP;
Kazunori Bannai, Atsugi, JP;
Hideto Higaki, Yokohama, JP;
Daisuke Imaki, Sagamihara, JP;
Noboru Kusunose, Yokohama, JP;
Yoshinobu Sakaue, Machida, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An image forming apparatus includes a plurality of image carriers and an optical writing device including light sources that emit light beams of different wavelengths, a deflector that deflects the light beams emitted from the light sources and synthesized on an identical axis in a sub-scanning direction, a first beam separator, a second beam separator, a first imaging device, and a second imaging device. The first beam separator and the second beam separator are located between the first imaging device and the second imaging device and transmit or reflect the light beams according to travel directions or wavelengths thereof. One of the targets is scanned with the light beam transmitted through the second beam separator. Another target is scanned with the light beam reflected by the second and first beam separators. The first and second imaging devices narrow the beams in the main scanning direction and the sub-scanning direction, respectively.