Photoplotter using a light valve device and process for exposing graphics
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United States of America Patent
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Jun 23, 1987
Grant Date -
N/A
app pub date -
Mar 14, 1986
filing date -
Mar 14, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A photoplotter supports a sheet of photosensitive material for exposure by an associated light source. A light valve device interposed between the light source and the sheet has a main face parallel to the sheet divided into a plurality of subareas or pixels the light transmissivities of which are individually controlled through an associated computer to cause the exposure to be that of a desired graphic or artwork.
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