LABEL AND METHOD FOR PREPARING THE SAME
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United States of America Patent
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Issued Date -
Feb 17, 2011
app pub date -
Jul 26, 2007
filing date -
Jul 26, 2006
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Abandoned
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Abstract
Disclosed is a label having an ink layer which has a metal or a metal oxide as its pigment, the color of the metal or the metal oxide being changed with an oxidation reaction of the metal or the metal oxide by laser irradiation, the laser irradiation causing the oxidation reaction of the metal oxide so as to make the metal oxide change in its oxidation number or come to a complete oxidation state from an incomplete oxidation state.
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