Led print head for electrophotographic printer
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United States of America Patent
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-
Jul 27, 2004
Grant Date -
Sep 26, 2002
app pub date -
Mar 20, 2002
filing date -
Mar 20, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A light-emitting diode (LED) print head has a linear array of LEDs and device drivers for delivering current to each LED individually. An imaging lens system to create a real image of the LED array is provided in the form of a plurality of gradient index lenses and the LEDs each have emission cones closely matched to the numerical aperture of the gradient index imaging lenses.
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