Patents by Inventor Tsai Chih Jen

Tsai Chih Jen 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).

  • Sheet feeder with electrostatic dust-collecting function
    Patent number: 7634205
    Abstract: A sheet feeder with electrostatic dust-collecting function includes a paper path, a feeding roller, a dust-collecting passageway, an electrostatic charge generator and a dust-collecting box. The feeding roller located on the paper path feeds a sheet through the paper path. The dust-collecting passageway has an inlet connected to the paper path and an outlet located opposite to the inlet. The electrostatic charge generator disposed at the outlet of the dust-collecting passageway generates electrostatic charges to attract dust coming from the sheet through the dust-collecting passageway and the paper path. The dust-collecting box for collecting the dust is disposed at the outlet of the dust-collecting passageway and has an adhesive layer for adhering the dust.
    Type: Grant
    Filed: March 28, 2006
    Date of Patent: December 15, 2009
    Assignee: Avision Inc.
    Inventor: Tsai Chih Jen