Patents by Inventor Peyman Kermanshahi Nejad

Peyman Kermanshahi Nejad 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).

  • Capacitive Sensor for Sensing State of Waste Toner Box in an Imaging Apparatus
    Publication number: 20140186063
    Abstract: A capacitive sensor for sensing amount of waste toner in a waste toner box of an imaging apparatus includes a capacitor that has a pair of separated plates disposed within the interior of the waste toner box. The capacitance of the capacitor changes with the amount of toner in between the plates of the capacitor. A sensor circuitry is connected to the plates of the waste toner box that measure the capacitance of the capacitor as a voltage value. This voltage value is provided to a controller that determines a relative change in the capacitance value by determining a change in capacitance of the capacitor with respect to a number of pages printed by the imaging apparatus. The controller then determines the state of the waste toner box based on this relative change in capacitance.
    Type: Application
    Filed: December 31, 2012
    Publication date: July 3, 2014
    Applicant: LEXMARK INTERNATIONAL, INC.
    Inventors: Andrew Charles Hogan, Peyman Kermanshahi Nejad, James Marion Nimmo, David Anthony Schneider, Christopher Kent Washing
  • Capacitive sensor for sensing state of waste toner box in an imaging apparatus
    Patent number: 8731415
    Abstract: A capacitive sensor for sensing amount of waste toner in a waste toner box of an imaging apparatus includes a capacitor that has a pair of separated plates disposed within the interior of the waste toner box. The capacitance of the capacitor changes with the amount of toner in between the plates of the capacitor. A sensor circuitry is connected to the plates of the waste toner box that measure the capacitance of the capacitor as a voltage value. This voltage value is provided to a controller that determines a relative change in the capacitance value by determining a change in capacitance of the capacitor with respect to a number of pages printed by the imaging apparatus. The controller then determines the state of the waste toner box based on this relative change in capacitance.
    Type: Grant
    Filed: November 13, 2009
    Date of Patent: May 20, 2014
    Assignee: Lexmark International, Inc.
    Inventors: Andrew Charles Hogan, Peyman Kermanshahi Nejad, James Marion Nimmo, David Anthony Schneider, Christopher Kent Washing
  • Capacitive Sensor for Sensing State of Waste Toner Box in an Imaging Apparatus
    Publication number: 20100303484
    Abstract: A capacitive sensor for sensing amount of waste toner in a waste toner box of an imaging apparatus includes a capacitor that has a pair of separated plates disposed within the interior of the waste toner box. The capacitance of the capacitor changes with the amount of toner in between the plates of the capacitor. A sensor circuitry is connected to the plates of the waste toner box that measure the capacitance of the capacitor as a voltage value. This voltage value is provided to a controller that determines a relative change in the capacitance value by determining a change in capacitance of the capacitor with respect to a number of pages printed by the imaging apparatus. The controller then determines the state of the waste toner box based on this relative change in capacitance.
    Type: Application
    Filed: November 13, 2009
    Publication date: December 2, 2010
    Inventors: Andrew Charles Hogan, Peyman Kermanshahi Nejad, James Marion Nimmo, David Anthony Schneider, Christopher Kent Washing