Internal drum plotter with multiple focal point holographic optical element
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United States of America Patent
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Mar 5, 1996
Grant Date -
N/A
app pub date -
Aug 17, 1993
filing date -
Aug 30, 1992
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An internal drum plotter in which a multiple focal point holographic element receives respective modulated light beams, one for each focal point, to focus the light beams on a light sensitive medium on the internal surface of the drum. The holographic element is rotated to trace the modulated light beams in separate, respective lines on the light sensitive medium.
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