Pump action refill ink jet printing mechanism
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United States of America Patent
Stats
-
Jul 9, 2002
Grant Date -
N/A
app pub date -
Jul 10, 1998
filing date -
Jul 15, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
This patent describes an ink jet printer based around ink jet nozzles which utilize a pump action so as to rapidly refill a nozzle chamber for ejection of subsequent ink drops. The nozzle chamber includes a first actuator for ejecting ink and a second actuator for pumping ink into the nozzle chamber. The actuators can comprise thermal bend actuators having a conductive heater element encased within a material having a high co-efficient of thermal expansion. The heater element is of a serpentine form and is concertinaed upon heating.
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Family
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Cited Art Landscape
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