Security-enhanced instant tickets via homogeneous utilization of ticket backing and variable indicia inks or dyes
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United States of America Patent
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Dec 12, 2023
Grant Date -
Mar 2, 2023
app pub date -
Nov 9, 2022
filing date -
Jan 25, 2016
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Abstract
A security-enhanced document includes a substrate and variable indicia comprising ink having a signal. The variable indicia is of a specific type and is applied to the substrate using a specific application technique. At least one other printed portion, which is a back of the document, has background ink noise, and the type of ink of the back of the document is of the same type of ink applied to the substrate using the same application technique as the ink of the variable indicia. The document also includes a scratch-off-coating applied over the variable indicia. The document has a signal-to-noise ratio of the ink of the variable indicia relative to the background ink noise of the back of the document that is not appreciable, thereby making the variable indicia unreadable with reference to the back of the document when the scratch-off-coating remains intact.
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