Inkjet nozzle chamber holding two fluids
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United States of America Patent
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-
Aug 25, 2009
Grant Date -
Jan 27, 2005
app pub date -
Aug 23, 2004
filing date -
Jul 15, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An inkjet nozzle chamber is configured to hold ink and a second fluid with a lower thermal conductivity. At least part of the actuator is positioned at the interface between the ink and the second fluid. By insulating at least some of the actuator from the printhead substrate, more heat is directed into the ink that is ejected from the nozzle. If the actuator is a thermal or thermal bend, the insulating fluid allows the resistive elements to heat more quickly and use less power. This reduces the overall power consumption of the printhead.
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