Value document
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United States of America Patent
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Mar 15, 2011
Grant Date -
Nov 8, 2007
app pub date -
Oct 5, 2004
filing date -
Oct 8, 2003
priority date (Note) -
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Abstract
The invention relates to a value document, in particular a bank note, having a value document substrate and different feature substances for checking the value document. According to the invention, a first feature substance is incorporated into the volume of the substrate of the value document, and second and third feature substances are applied to the value document substrate in a printing ink jointly and in the form of a coding. The second feature substance is formed by a luminescent substance, and the third feature substance by a material absorbent in a special spectral range. The two substances are used for the value recognition of different user groups.
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