Security system for printed material
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United States of America Patent
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Issued Date -
Apr 28, 2011
app pub date -
Sep 16, 2010
filing date -
Sep 16, 2009
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An improved security system is disclosed for material printed on a substrate comprising a primary marking printed on the substrate for conveying information. A secondary marking provides security to the primary marking. The secondary marking may include a variation in optical properties, a variation in magnetic properties or a variation in both in optical properties and magnetic properties of the primary marking. A method is disclosed comprising printing a primary and a secondary marking on a substrate with the primary marking conveying information and with the secondary marking providing security to the primary marking.
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