Inkjet printer nozzle arrangement having thermal actuator with inner and outer portion of inverse profile
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United States of America Patent
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Mar 8, 2011
Grant Date -
Jun 25, 2009
app pub date -
Mar 3, 2009
filing date -
Apr 12, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A nozzle arrangement for an inkjet printhead. The nozzle arrangement comprising a wafer substrate assembly defining an ink inlet channel; a static ink ejection structure extending from the substrate assembly and bounding the ink inlet channel; a pair of thermal bend actuators extending from the wafer substrate assembly on opposite sides of the static ink ejection structure, each actuator having an outer passive portion and an inner active portion, the inner active portion having a profile inverse of the outer passive portion; an active ink ejection structure comprising a roof defining an ink ejection port, and at least one sidewall which depends from the roof and surrounds the static ink ejection structure; and a pair of coupling structures coupling respective thermal bend actuators to the active ink ejection structure, the thermal bend actuators adapted to bend to move the active ink ejection structure relative to the static ink ejection structure, whereby ink contained within the ink ejection structure is ejected through the ink ejection port.
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