Patents by Inventor Denise R. Leon-Bayley

Denise R. Leon-Bayley 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).

  • Imaging process comprising tri-level imaging area and an aluminum complex charge enhancing additive
    Patent number: 5075185
    Abstract: An imaging process which comprises (1) charging an imaging member in an imaging apparatus (2) creating on the member a latent image comprising areas of high, intermediate, and low potential; (3) developing the low areas of potential with a first developer comprising carrier and a first toner comprised of resin, pigment excluding black and an aluminum complex charge enhancing additive; (4) developing the high areas of potential with a second developer comprising carrier and a second toner comprised of resin, pigment, and a charge enhancing additive that enables a positively charged toner; (5) transferring the resulting developed image to a substrate; and (6) fixing the image thereto.
    Type: Grant
    Filed: March 28, 1990
    Date of Patent: December 24, 1991
    Assignee: Xerox Corporation
    Inventors: Jacques C. Bertrand, Denise R. Leon-Bayley, Roger N. Ciccarelli, Linda J. Nelson