Reversible information carrying system that turns from invisible to readable
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United States of America Patent
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N/A
Issued Date -
Sep 18, 2003
app pub date -
Dec 18, 2002
filing date -
Dec 18, 2001
priority date (Note) -
Abandoned
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Abstract
Cholesteric liquid crystals in microencapsulated form are applied as a background or as printed information as a part of a reversible information carrying system. The reversible information system is normally invisible under ambient conditions, while providing a highly contrasting background to a dataform symbology upon stimulation with appropriate forms of at least one of heat and light. The reversible information system is adapted for the demands of automated sorting systems.
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