Method of minimizing absorption of visible light in ink compositions comprising IR-absorbing metal-cyanine dyes
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United States of America Patent
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Nov 25, 2008
Grant Date -
Feb 9, 2006
app pub date -
Aug 9, 2004
filing date -
Aug 9, 2004
priority date (Note) -
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Abstract
The present invention provides a method of minimizing absorption of visible light in an ink composition comprising an IR-absorbing macrocyclic cyanine dye, comprising preselecting said dye such that it includes at least one moiety for reducing intermolecular interactions between adjacent dye molecules.The method is especially suitable for use in connection with netpage and Hyperlabel systems.
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