Adaptive light emitting diode bar equalization

G - Physics – 03 – G

Patent

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Details

G03G 15/043 (2006.01) B41J 2/45 (2006.01) G06K 15/12 (2006.01)

Patent

CA 2414977

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.

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