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. 04, 2017
Filed:
Jan. 27, 2016
Kyocera Document Solutions Inc., Osaka, JP;
Shinya Matsui, Osaka, JP;
KYOCERA Document Solutions Inc., Osaka, JP;
Abstract
An image reading device includes contact glass, a frame, a light emitting section, a sensor, and a control section. An original document is placed on the contact glass. The flame surrounds the periphery of the contact glass. The light emitting section emits light toward the contact glass and the frame. The sensor detects a first received light amount resulting from first reflected light that has passed through the contact glass and a second received light amount resulting from second reflected light that has been reflected off the frame. The control section compares temporal variation of the first received light amount with temporal variation of the second received light amount. The control section determines whether or not the temporal variation of the first received light amount indicates presence of the original document on the contact glass using the temporal variation of the second received light amount as a reference.