Micro-electromechanical fluid ejection mechanism having a shape memory alloy actuator
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United States of America Patent
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Jul 13, 2010
Grant Date -
May 7, 2009
app pub date -
Nov 27, 2008
filing date -
Jul 15, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Provided is a micro-electromechanical fluid ejection mechanism. The mechanism includes a substrate defining an ink passage in fluid communication with a tapered ink chamber having an ink ejection port, as well as a shape memory alloy (SMA) actuator arranged within the chamber. The actuator is configured to straighten when heated and to return to a bent state upon subsequent cooling to facilitate ejection of ink via the ejection port.
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