Nozzle arrangement using unevenly heated thermal actuators
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United States of America Patent
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-
Apr 26, 2011
Grant Date -
Aug 20, 2009
app pub date -
Apr 28, 2009
filing date -
Jun 9, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A nozzle arrangement for an inkjet printer includes a wafer defining an ink supply channel and a nozzle chamber in fluid communication with the ink supply channel; a drive circuitry layer positioned on the wafer; a plurality of actuator devices positioned on the wafer and the drive circuitry layer to cover the nozzle chamber, each actuator device having an internal serpentine conductive core surrounded by a polytetrafluoroethylene (PTFE) layer; and an ink ejection port in fluid communication with the nozzle chamber. The plurality of actuator devices are radially positioned around the ink ejection port and adapted to bend into the nozzle chamber, and the internal serpentine conductive core is disposed within the PTFE layer to heat the PTFE layer unevenly.
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