Area exposure machine
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United States of America Patent
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-
Aug 1, 1989
Grant Date -
N/A
app pub date -
Mar 24, 1988
filing date -
Mar 25, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An area exposure machine for reproduction equipment and comprising an oblong light source (1) and a reflector behind the light source. The reflector is shaped substantially as an involute curve. As a result a uniform exposure of a relatively large area can be achieved, and the distance between the light source (1) and the area to be exposed can be reduced. As reflections towards the light source are avoided the consumption of energy can also be reduced. The reflector is advantageously composed of planar surfaces approximating an involute curve, and each planar surface is advantageously wedge-shaped whereby a more uniform exposure is obtained. The area exposure machine can for instance be used in connection with a contact printing box.
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