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. 05, 2013
Filed:
May. 31, 2011
Matsuo Yomogida, Miyagi, JP;
Matsuo Yomogida, Miyagi, JP;
Ricoh Company, Limited, Tokyo, JP;
Abstract
An automatic document feeder includes an original feed table that has a detection hole and on which a bundle composed of a plurality of originals is set; and an original detection sensor that detects the original on the original feed table. The original detection sensor is a reflective optical sensor having a light-emitting unit and a light-receiving unit, and disposed under or inside of the original feed table to detect the original though the detection hole. The detection hole includes a light-emitting side portion corresponding to the light-emitting unit of and a light-receiving side portion corresponding to the light-receiving unit of the original detection sensor, the light-emitting side portion and the light-receiving side portion having planar shapes different from each other. The original feed table includes a light-shielding portion that is provided above the light-receiving unit of the original detection sensor, and has a slanted surface overhanging the light-receiving unit.
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