Patents by Inventor Kristina J. Wood

Kristina J. Wood 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).

  • Reduced hot offset in color electrophotographic imaging
    Patent number: 6219519
    Abstract: Hot offset of black toner is reduced or eliminated in a color electrophotographic imaging device, such as a laser printer, by applying a minimal layer of non-black toner in addition to the black toner on a print media. The non-black toner, such as cyan, magenta or yellow toner, acts as a release agent for reducing or eliminating hot offset of the black toner during fusing of the toner to the media. The non-black toner is applied as a thin layer just sufficient to reduce hot offset of the black toner and such that an appearance of a resultant image formed retains a visual perception of being a black toner only image. In an alternate embodiment, the thin layer of non-black toner is applied in response to coated media being processed, such as overhead transparencies, that are more susceptible to hot offset.
    Type: Grant
    Filed: October 24, 2000
    Date of Patent: April 17, 2001
    Assignees: Hewlett-Packard Company, 3M Innovative Properties Company
    Inventors: Judith A. Garzolini, Kristina J. Wood, Kenneth E. Heath, Joseph C. Carls, Dennis D. Anderson
  • Reduced hot offset in color electrophotographic imaging
    Patent number: 6212354
    Abstract: Hot offset of black toner is reduced or eliminated in a color electrophotographic imaging device, such as a laser printer, by applying a minimal layer of non-black toner in addition to the black toner on a print media. The non-black toner, such as cyan, magenta or yellow toner, acts as a release agent for reducing or eliminating hot offset of the black toner during fusing of the toner to the media. The non-black toner is applied as a thin layer just sufficient to reduce hot offset of the black toner and such that an appearance of a resultant image formed retains a visual perception of being a black toner only image. In an alternate embodiment, the thin layer of non-black toner is applied in response to coated media being processed, such as overhead transparencies, that are more susceptible to hot offset.
    Type: Grant
    Filed: December 15, 1999
    Date of Patent: April 3, 2001
    Assignees: Hewlett-Packard Company, 3M Innovative Properties Company
    Inventors: Judith A. Garzolini, Kristina J. Wood, Kenneth E. Heath, Joseph C. Carls, Dennis D. Anderson