Patents by Inventor Jamie Piotrowski

Jamie Piotrowski 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).

  • Apparatus and method of reducing charge roller contamination
    Patent number: 7231163
    Abstract: The present invention relates generally to image forming equipment, e.g. a laser printer of the type which includes a photoconductive (PC) drum and an associated charge roller. The invention is disclosed in exemplary embodiment as a laser printer incorporating a cleaner element with an electrical potential to sufficiently charge contamination particles on the PC drum to electrically repel from a charged surface, such as the charge roller.
    Type: Grant
    Filed: February 11, 2005
    Date of Patent: June 12, 2007
    Assignee: Lexmark International, Inc.
    Inventors: Bhaskar Gopalanarayanan, Robert Watson McAlpine, Jamie Piotrowski, Donald Wayne Stafford
  • Apparatus and method of reducing charge roller contamination
    Publication number: 20060182475
    Abstract: The present invention relates generally to image forming equipment, e.g. a laser printer of the type which includes a photoconductive (PC) drum and an associated charge roller. The invention is disclosed in exemplary embodiment as a laser printer incorporating a cleaner element with an electrical potential to sufficiently charge contamination particles on the PC drum to electrically repel from a charged surface, such as the charge roller.
    Type: Application
    Filed: February 11, 2005
    Publication date: August 17, 2006
    Inventors: Bhaskar Gopalanarayanan, Robert McAlpine, Jamie Piotrowski, Donald Stafford