Patents by Inventor Dcai Sun

Dcai Sun 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).

  • Sensing system to allow side-by-side writing of photonic imagers to create wide and seamless xerographic images
    Patent number: 6292208
    Abstract: An apparatus and method for stitching a at least two imagers together in a scanning system to produce accurate, wide and seamless images. The system includes a photoreceptor adapted to move in a process direction and at least two imagers for simultaneously forming a single scan line at a time, in a direction transverse to the process direction. The system also includes circuitry for stitching together the at least two imagers and for forming registration marks on the surface of the photoreceptor. Finally, the scanning system includes sensing circuitry for detecting displacements of successive registration marks and providing adjustment values to the stitching circuitry.
    Type: Grant
    Filed: November 24, 1999
    Date of Patent: September 18, 2001
    Assignee: Xerox Corporation
    Inventors: Robert M. Lofhus, David Kirtland Fork, Dcai Sun