Method and apparatus for controlling exposure of an imaging sheet
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United States of America Patent
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Jul 24, 1990
Grant Date -
N/A
app pub date -
Apr 27, 1989
filing date -
Apr 27, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and apparatus form visible images in an imaging media which exhibits variation in sensitivity and color balance as a function of temperature and humidity changes. The media includes a substrate having provided on one of its surfaces a layer of microcapsules containing an image forming agent and a photohardenable composition. In the apparatus, a radiation source provides one or more bands of actinic radiation for exposing the substrate. An optical system focuses the actinic radiation onto the substrate to form a latent image thereon. A developing device develops the latent image into a visible image onto the substrate or onto a receiver substrate. A temperature and/or humidity sensor is provided for sensing the temperature and/or humidity exposure environment prior to exposure. An exposure control responsive to the sensors(s) controls the duration of the exposure at least partially as a function of temperature and/or humidity.
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