Solid ink compositions for thermal ink-jet printing having improved printing characteristics
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United States of America Patent
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-
Sep 29, 1992
Issued Date -
N/A
app pub date -
Apr 12, 1991
filing date -
Mar 31, 1989
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Disclosed is an ink-jet composition including an organic carrier that is solid at 25.degree. C. and liquid at the operating temperature of an ink-jet nozzle and a driver having a critical pressure greater than 10 atmospheres, the carrier and driver being miscible in liquid phase. The ink-jet composition is characterized by a viscosity of less than 15 centipoise at 90.degree. C. and a surface tension of between about 20 to about 25 dynes per centimeter at 90.degree. C. The ink-jet compositions disclosed herein are particularly useful in thermal ink-jet printing using thermally induced vapor bubbles to eject ink droplets from the printer and onto a substrate.
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