Direct firing thermal bend actuator ink jet printing mechanism
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United States of America Patent
Stats
-
May 29, 2001
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 including a thermal actuator including a heater element encased within a material having a high coefficient of thermal expansion whereby the actuator operates by electrical heating the heater. The heater element has a corrugated structure so as to improve the thermal transfer to the actuation material so as to thereby increase the speed of actuation of the thermal actuator. The heater element is also of a serpentine or concertinaed form so as to allow substantially unhindered expansion of the actuation material. The thermal actuator can include layers sandwiched together where the conductor material has a series of slots or holes so as to allow the actuation material to be integrally joined together so as to reduce the likelihood of delamination of the layers.
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Cited Art Landscape
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