Patents by Inventor Donald J. Quant

Donald J. Quant 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).

  • High efficiency multispot facet tracked raster output scanning system
    Patent number: 5543825
    Abstract: The present invention is a novel raster output scanner (ROS) configuration that employs modulated laser diodes as the light source. Each laser diode is coupled to a dedicated driver that modulates the light beam according to digital video signal data. The present invention employs a single-channel acoustic-optic cell that deflects the multiple beams to maintain proper facet tracking. A single transducer is coupled to the single-channel acoustic-optic cell that generates the necessary acoustic wave to maintain proper tracking.
    Type: Grant
    Filed: November 17, 1993
    Date of Patent: August 6, 1996
    Assignee: Xerox Corporation
    Inventors: Tibor Fisli, Jean-Michel Guerin, Patrick Y. Maeda, Donald J. Quant
  • Cleaning system
    Patent number: 3947108
    Abstract: An improved cleaning apparatus and process are provided including a cleaning means for removing toner particles and other particulate contaminants. A contaminant removal means is provided positioned between the cleaning means and the means for charging an electrostatic imaging member. The contaminant removal means which comprises a scrubber member is adapted to remove film-like contaminants which would otherwise cause deletions in the resulting copy sheet.
    Type: Grant
    Filed: May 20, 1974
    Date of Patent: March 30, 1976
    Assignee: Xerox Corporation
    Inventors: Raghulinga R. Thettu, Donald J. Quant