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. 28, 2012
Filed:
Dec. 08, 2009
Chung-kai Wang, Taipei, TW;
Cai-rong Liao, Guangzhou, CN;
San-xi Chu, Guangzhou, CN;
Primax Electronics Ltd., Taipei, TW;
Abstract
A duplex scanning apparatus includes an automatic document feeder and a flatbed scanner. The automatic document feeder includes a first scanning module. The flatbed scanner includes a second scanning module and a first calibration plate. The first calibration plate is disposed on the second scanning module, and includes a calibration plate first end, a calibration plate second end and a calibration plate middle part. A first included angle is defined between the calibration plate first end and the calibration plate middle part, and a second included angle is defined between the calibration plate second end and the calibration plate middle part. As such, each of a distance between the calibration plate first end and the first scanning module and a distance between the calibration plate second end and the first scanning module is shorter than a distance between the calibration plate middle part and the first scanning module.