Patterned optical structures with enhanced security feature
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United States of America Patent
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Jan 25, 2011
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N/A
app pub date -
Oct 24, 2006
filing date -
Jul 8, 1999
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Abstract
A security image and method for forming said image is disclosed wherein an image having a layer with a hologram therein has an additional layer of magnetically aligned flakes together forming an image that is difficult to counterfeit and is highly attractive. Preferably windows of an opaque layer provide additional means of encoding or forming the image.
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