Patents by Inventor George Peter Olson

George Peter Olson 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).

  • Method and apparatus for compensating for a darkness shift during the life of an electrophotographic printer cartridge
    Patent number: 6175375
    Abstract: An improved EP printer will automatically compensate for printer output darkness shift over the usage life of one or more components of the print engine. In many EP print engines, the printer output darkness without correction will gradually change as the components are used, and typically, the darkness will increase to an extent that is perceptible. The printer output darkness can be controlled using a EP operating point that changes certain operating parameters, such as the laser diode current, the duty cycle of the video data signals driving the laser diode, and other voltage parameters including the charge roller voltage, or the developer bias voltage. It is desirable to make adjustments over the usage life of these components, so as to maintain the initial printer output darkness throughout the life of the major system components.
    Type: Grant
    Filed: January 25, 2000
    Date of Patent: January 16, 2001
    Assignee: Lexmark International, Inc.
    Inventors: Douglas Anthony Able, Cyrus Bradford Clarke, Mark Edwin Kirtley Lund, Daniel George Mlejnek, George Peter Olson, Gregory Lawrence Ream, Thomas Campbell Wade