SECURE LAMINATED CARDS
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United States of America Patent
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N/A
Issued Date -
Jan 24, 2008
app pub date -
Jul 6, 2007
filing date -
Jul 6, 2006
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
Laminate document include line screen patterns for authenticating the documents. The line screen patterns can hide information in the documents that can be revealed by a viewer. Print densities of the line screen patterns can be adjusted to compensate for effects associated with lamination. A built-in viewer can be spaced from the line patterns to shift image intensity or color through rapid cycles of moire interference with changes in viewing angle.
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Family
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Cited Art Landscape
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