Isocyanate-derived phase change ink additive for improved electronic level sensing reliability and type encoding
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United States of America Patent
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May 2, 2000
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app pub date -
Sep 4, 1998
filing date -
Jun 28, 1996
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Abstract
Phase change ink additives are disclosed which comprise quaternary ammonium salts that are extremely useful in producing phase change inks with increased specific conductance. Suitable and adjustable specific conductance is necessary for reliable functioning of electronic type ink level sensing systems used in phase change ink jet printers. Phase change inks may also be encoded for type by virtue of their specific conductance.
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