Method to apply an invisible mark on a media
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United States of America Patent
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Jun 21, 2011
Grant Date -
Jun 26, 2008
app pub date -
Feb 15, 2006
filing date -
Feb 15, 2005
priority date (Note) -
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Abstract
The present application aims to propose a solution for embedding invisible mark suitable for very large production volumes. This is achieved by a method for applying an invisible mark on a media based on a pattern, and comprising the following steps: determining an area to apply this mark, applying a transparent or semi-transparent substance, on the media, said substance being modulated with the active dots to form the pattern by modifying the quantity of the substance at each active dot.
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