Nozzle arrangement with an actuator having iris vanes
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United States of America Patent
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-
Dec 27, 2011
Grant Date -
Jun 9, 2011
app pub date -
Feb 7, 2011
filing date -
Jul 15, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A nozzle arrangement for an inkjet printhead includes a substrate defining an ink inlet; a plurality of posts extending from the substrate; a roof portion defining an ejection port, the roof portion supported by the plurality of posts; a plurality of vanes extending from the substrate and arranged to form a wall of a chamber around the ink inlet; and a plurality of thermal bend actuators respectively positioned at a base of each vane, each thermal bend actuator having a fixed end in the vicinity of one of the plurality of posts and a displaceable end opposite the fixed end. The plurality of thermal bend actuator are adapted to bend said vanes inwards with respect to the chamber in an iris-type manner to reduce a volume of the chamber, whereby ink is ejected from the chamber via the ejection port.
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Cited Art Landscape
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