Magnetostrictive ink jet printing mechanism
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United States of America Patent
Stats
-
Jun 19, 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
An ink jet printhead has a magnetostrictive actuator to eject ink from a nozzle chamber on demand. The actuator utilizes the phase transformation of a magnetostrictive material such as Terfenol-D in a magnetic field to cause the ejection of ink. The actuator includes a magnetostrictive paddle in a quiescent state which transfers to an ink ejection state upon the application of a magnetic field. The magnetic field is applied by passing a current through a conductive coil adjacent the magnetostrictive material.
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