Ink jet recording apparatus
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United States of America Patent
Stats
-
Jan 2, 2001
Grant Date -
N/A
app pub date -
Oct 27, 1998
filing date -
Sep 21, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An ink jet recording apparatus that achieves sufficient attraction force even when the actuator is sealed. In the ink jet recording apparatus, an electric pulse is applied between a diaphragm and electrode by a drive circuit to deform a diaphragm by electrostatic force to eject an ink droplet from a nozzle comprises a vibration chamber containing a wall surface formed by the diaphragm and a wall surface on which the electrode is formed, and a first cavity communicating with the vibration chamber and containing a wall surface on which is provided a lead for connecting the drive circuit and electrode. The vibration chamber is sealed airtight, and comprises a second cavity communicating with the vibration chamber or first cavity for increasing the volume of the airtight sealed part of the actuator.
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