Image authentication using lateral spreading characteristics
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United States of America Patent
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Jun 28, 2016
Grant Date -
N/A
app pub date -
Jul 29, 2015
filing date -
Jul 29, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
A method for printing an image with authentication features, including: printing a media treatment material onto a print medium in accordance with a pattern of predefined authentication features, and printing one or more visible printing materials onto the print medium in accordance with an image pattern, thereby providing a printed visible image. The media treatment material alters lateral spreading characteristics of the visible printing materials within the print medium, so that the lateral spreading characteristics are different in image regions where the media treatment material was printed than in image regions where the media treatment material was not printed. The difference in the lateral spreading characteristics causes the pattern of authentication features to be detectable.
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