Patents by Inventor San-Xi Chu

San-Xi Chu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8253991
    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.
    Type: Grant
    Filed: December 8, 2009
    Date of Patent: August 28, 2012
    Assignee: Primax Electronics Ltd.
    Inventors: Chung-Kai Wang, Cai-Rong Liao, San-Xi Chu
  • Publication number: 20110096378
    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.
    Type: Application
    Filed: December 8, 2009
    Publication date: April 28, 2011
    Applicant: PRIMAX ELECTRONICS LTD.
    Inventors: Chung-Kai Wang, Cai-Rong Liao, San-Xi Chu