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:
Aug. 23, 2016
Filed:
Feb. 27, 2015
Masatoshi Ishida, Kanagawa, JP;
Tadaaki Oyama, Kanagawa, JP;
Masatoshi Ishida, Kanagawa, JP;
Tadaaki Oyama, Kanagawa, JP;
RICOH COMPANY, LTD., Tokyo, JP;
Abstract
An image reader unit includes a platen on which to place a document; a light source including a plurality of split light sources to emit light beams toward a surface of the document; a movable exposure unit moving in a sub-scanning direction while obtaining reflected light reflected from the surface of the document; an image sensor to scan an image of the document by receiving the reflected light; and a reader processor to identify a length of the document in the main scanning direction based on a received light quantity from the image sensor obtained by activating fewer than all of the plurality of split light sources necessary for identifying the length of the document in the main scanning direction while moving the movable exposure unit in the sub-scanning direction.