Patents by Inventor Frederick R. Gilley

Frederick R. Gilley 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).

  • Charge injection amplification
    Patent number: 5077159
    Abstract: A weak electrostatic image on an imaging member is amplified by first toning it with charge injection toner. The imaging member is treated without fusing the toner image to reduce the charge injection inhibiting effect of charge associated with the toner imaging member interface. Subsequently to or simultaneously with said treating step the imaging member is charged positively, which charge injects through the toner to create an amplified electrostatic image that can be toned.
    Type: Grant
    Filed: January 10, 1990
    Date of Patent: December 31, 1991
    Assignee: Eastman Kodak Company
    Inventors: Yee S. Ng, Frederick R. Gilley