Reverse spring lever 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 printer has a reverse spring lever to eject ink from a nozzle chamber. An electromagnetic actuator moves the reverse spring lever from a quiescent position to a pre-firing position and deactivation causes a torsional spring to drive the reverse spring lever to eject ink. The reverse spring lever and the electromagnetic actuator are interconnected in a cantilever arrangement such that small movements of the electromagnetic actuator result in larger movements of the reverse spring lever. The first actuator includes a solenoid coil surrounded by a magnetic actuator having a first fixed magnetic pole and a second moveable magnetic pole. The moveable magnetic pole includes a number of slots for the flow of ink through that pole upon movement.
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