Photothermographic and photographic elements having a transparent support having antihalation properties and properties for reducing woodgrain
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United States of America Patent
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Oct 7, 2003
Grant Date -
N/A
app pub date -
Sep 7, 2000
filing date -
Sep 7, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A photosensitive element includes a layer of a photosensitive material on a transparent, multilayer, polymeric support having numerous alternating layers of at least two different polymeric materials. The polymeric multilayer support reflects at least 50% of actinic radiation in the range of wavelengths to which the photosensitive material is sensitive. If the polymeric multilayer reflector includes numerous, thin, alternating layers located at the surface of the polymeric support closest to the photosensitive material, the element not only provides increased speed but also provides an antihalation effect. In another aspect, a multilayer reflector is located a distance removed from the photosensitive layer sufficient to reduce any woodgrain that would otherwise occur, while increasing speed.
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