Patents by Inventor Michael L. Pawley

Michael L. Pawley 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).

  • Patent number: 7263325
    Abstract: A helical auger member for transporting toner in an image forming apparatus. The auger member may be implemented as part of a waste toner removal system for removing toner from a photoconductive member of a toner cartridge. Toner that is removed by a cleaner member is transported through a cleaner housing with a helical member, such as a coil wire, having a pitch to outer diameter ratio from about 1.5 to 2.5.
    Type: Grant
    Filed: October 4, 2004
    Date of Patent: August 28, 2007
    Assignee: Lexmark International, Inc.
    Inventors: Claudia A. Marin, John W. Kietzman, Tom E. Stickler, Michael L. Pawley
  • Patent number: 5012289
    Abstract: A developer apparatus (29) for use in an electrostatic reproduction apparatus includes a large reservoir of toner (34, 44). The toner is located in a supply chamber (39) and is metered to a developer roller chamber (35) from which it is carried by a developer roller (31) past a doctor blade (36) to a photoconductor drum (19) for image development. A toner metering roller (41) rotates with the developer roller (31) to provide a continuous supply of toner from the supply chamber (39) to the developer chamber (35). Once an equilibrium level (65) is reached, the toner metering roller (41) acts to remove toner (34) from the developer chamber (35) to the supply chamber (39) to insure proper operation of the developer roller (31).
    Type: Grant
    Filed: August 11, 1989
    Date of Patent: April 30, 1991
    Assignee: International Business Machines Corporation
    Inventors: Charles S. Aldrich, Steven L. Applegate, James A. Craft, James J. Molloy, Michael L. Pawley