IDENTIFICATION MEDIUM
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United States of America Patent
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N/A
Issued Date -
Jun 12, 2014
app pub date -
Feb 21, 2012
filing date -
Apr 1, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An identification medium cannot be reused when an attempt has been made to remove it from an object by using solvent. A cholesteric liquid crystal layer subjected to a hologram processing is formed while contacting a COP (cycloolefin polymer) layer. When the identification medium is removed using a solvent from a state in which it was adhered to an object by an adhesive layer, the COP layer is melted by the solvent and is damaged. The COP layer is a layer which functions as a substrate of the identification medium, and the identification medium is damaged by contacting with the solvent, as described above, and it is difficult to reuse.
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