Patents by Inventor Mark Kevin DeMoor

Mark Kevin DeMoor 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).

  • Shared high voltage power supply for image transfer in an image forming device
    Patent number: 7289757
    Abstract: An image transfer assembly in a color printer or the like includes four image forming units. Each of the image forming units includes a photoconductive unit and a transfer device. A voltage is applied to the transfer device thereby creating a voltage potential between the photoconductive unit and the transfer device to facilitate the transfer of toner to a media substrate, such as paper. The transfer devices in the first two image forming units share a single high voltage power supply while separate high voltage power supplies supply the necessary voltage to the transfer devices of the other two image forming units.
    Type: Grant
    Filed: March 26, 2004
    Date of Patent: October 30, 2007
    Assignee: Lexmark International, Inc.
    Inventors: Pramod K. Sharma, Mark Kevin DeMoor, Gregory Lawrence Ream
  • Development component detection in an electrophotographic device
    Patent number: 7272328
    Abstract: An image forming device and method of detecting the presence or absence of components of one or more image forming units. Each image forming unit includes a replaceable component. A power supply transmits an input signal to the replaceable component. A detection circuit is coupled to the replaceable component and generates an output signal indicative of the presence or absence of an electrical coupling that is established when the replaceable component is installed. The detection circuit thus senses the input signal propagating through the replaceable component. A controller may be adapted to halt image formation or generate an error indication if the detection circuit detects the absence of necessary components or the presence of components not necessary for a current mode of operation.
    Type: Grant
    Filed: March 29, 2005
    Date of Patent: September 18, 2007
    Assignee: Lexmark International, Inc.
    Inventors: Gregory Lawrence Ream, Mark Kevin DeMoor
  • Resistive heater comprising first and second resistive traces, a fuser subassembly including such a resistive heater and a universal heating apparatus including first and second resistive traces
    Patent number: 7193180
    Abstract: A resistive heater adapted for heating a fuser belt is provided. The heater comprises a substrate, a first resistive trace formed over the substrate, and a second resistive trace formed so as to at least partially overlap the first resistive trace.
    Type: Grant
    Filed: July 8, 2004
    Date of Patent: March 20, 2007
    Assignee: Lexmark International, Inc.
    Inventors: William Paul Cook, Steven Jeffrey Harris, John William Kietzman, Gregory Hardin McClure, Mark Kevin DeMoor, Jerry W. Smith
  • Resistive heater comprising first and second resistive traces, a fuser subassembly including such a resistive heater and a universal heating apparatus including first and second resistive traces
    Publication number: 20040245236
    Abstract: A resistive heater adapted for heating a fuser belt is provided. The heater comprises a substrate, a first resistive trace formed over the substrate, and a second resistive trace formed so as to at least partially overlap the first resistive trace.
    Type: Application
    Filed: July 8, 2004
    Publication date: December 9, 2004
    Inventors: William Paul Cook, Steven Jeffrey Harris, John William Kietzman, Gregory Hardin McClure, Mark Kevin DeMoor, Jerry W. Smith
  • Apparatus and method for ink jet printhead voltage fault protection
    Patent number: 6481814
    Abstract: An ink jet printhead voltage fault protection apparatus includes a power supply and a latching circuit. The latching circuit disables a printhead voltage applied to the printhead by the power supply upon detection of a fault condition associated with the printhead voltage such that the printhead voltage remains disabled until the power supply goes through a power-on reset sequence.
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: November 19, 2002
    Assignee: Lemark International, Inc.
    Inventors: Mark Kevin DeMoor, Todd Alan Dutton
  • Apparatus and method for ink jet printhead voltage fault protection
    Publication number: 20020118234
    Abstract: An ink jet printhead voltage fault protection apparatus includes a power supply and a latching circuit. The latching circuit disables a printhead voltage applied to the printhead by the power supply upon detection of a fault condition associated with the printhead voltage such that the printhead voltage remains disabled until the power supply goes through a power-on reset sequence.
    Type: Application
    Filed: February 28, 2001
    Publication date: August 29, 2002
    Inventors: Mark Kevin DeMoor, Todd Alan Dutton