Method and apparatus for forming microstructures on polymeric substrates
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United States of America Patent
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Issued Date -
Jan 9, 2003
app pub date -
Jun 26, 2002
filing date -
Jun 26, 2001
priority date (Note) -
Abandoned
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Abstract
Methods and apparatus for forming microstructures in the surface of polymeric web materials for use as optical memory substrates. The microstructures may be formed by laminating a hot stamper to a web of material with a selective time/temperature profile. The stamper may be heated to melt flow the surface of the web and stabilize before separation. The stamper may be carried by a support that is independent of the press. The web of polymeric material may be provided with a flow enhancer to improve image formation. Also described herein are methods and apparatus for making optical memory modules, such as disks, which include novel stampers, coating applicators, and finishing systems.
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