Patents Represented by Attorney, Agent or Law Firm Phil Virgu
  • Adaptive light emitting diode bar equalization
    Patent number: 6753897
    Abstract: Uniformity of light output from an LED printbar is achieved by current sensing or image sensing of auxiliary LEDs on the LED printbar. A photodetector measures the light output from the auxiliary LEDs and a comparator will compare the auxiliary LED data to determine if the entire LED printbar has to be compensated to make the light output more uniform.
    Type: Grant
    Filed: December 26, 2001
    Date of Patent: June 22, 2004
    Assignee: Xerox Corporation
    Inventor: Shahriar Vazan