Method and apparatus for monitoring and calibrating an emissive pixel
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United States of America Patent
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Issued Date -
Sep 14, 2006
app pub date -
May 23, 2005
filing date -
Mar 14, 2005
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
The present invention provides techniques to calibrate the emissive pixels used in printers and displays. The emissive pixels are arranged in a linear array or in a two dimensional array. For the transparent substrate on which the emissive pixels are formed, the light emitted by a pixel is measured by attaching one or more optical sensors, either directly or via optical fibers, to the transparent surfaces of the transparent substrate. That measurement is compared to a reference value and corrections are accordingly made to the emissive pixels. In case of a printer, the emissive pixels can be tested for their luminescent strengths in the period following the printing of a page while the next page to be printed is being positioned.
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