IR-absorbing Intaglio ink
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United States of America Patent
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Jan 29, 2013
Grant Date -
Mar 15, 2012
app pub date -
Nov 18, 2011
filing date -
Nov 25, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
Pasty ink for the engraved steel die printing process, having a viscosity value above 3 Pa·s, preferably above 5 Pa·s at 40° C., and comprising an infrared absorbing material, wherein said infrared absorbing material is a transition element compound whose IR-absorption is a consequence of electronic transitions within the d-shell of transition element atoms or ions.
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