Printing nozzle having fault sensor
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United States of America Patent
Stats
-
May 10, 2011
Grant Date -
Aug 12, 2010
app pub date -
Apr 22, 2010
filing date -
Jun 30, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A printing nozzle is provided having a chamber defined over a fluid inlet in a substrate and having a fluid ejection port, an actuator for causing ejection of fluid within the chamber from the fluid ejection port, a controller for controlling operation of the actuator by applying a current pulse having a predetermined energy level to the actuator, and a sensor for sensing operation of the actuator. The controller applies a current pulse having an energy level significantly greater than said predetermined energy level to the actuator when the sensor senses faulty operation of the actuator.
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