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:
Apr. 18, 2017
Filed:
Dec. 18, 2012
Naoto Watanabe, Kanagawa, JP;
Toshiaki Tokita, Kanagawa, JP;
Kohji Sakai, Tokyo, JP;
Nobuaki Kubo, Tokyo, JP;
Masayuki Muranaka, Kanagawa, JP;
Naoto Watanabe, Kanagawa, JP;
Toshiaki Tokita, Kanagawa, JP;
Kohji Sakai, Tokyo, JP;
Nobuaki Kubo, Tokyo, JP;
Masayuki Muranaka, Kanagawa, JP;
RICOH COMPANY, LTD., Tokyo, JP;
Abstract
An optical scanning apparatus includes a light source, an optical deflector having a rotary polygon mirror to deflect a light beam from the light source, a scanning optical system configured to focus the light beam deflected by the optical deflector on a target surface, a sync detecting sensor configured to determine a write start timing on the target surface, and a processing unit configured to correct detection data of the sync detecting sensor based on a measured value of a time needed for one revolution of the rotary polygon mirror.