Method for operating a valve
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United States of America Patent
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May 22, 1990
Grant Date -
N/A
app pub date -
Apr 3, 1989
filing date -
Dec 1, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention relates to a method for operating an electromagnetic valve means comprising a valve plunger journalled within a valve body for movement under the influence of an electric current on a drive stroke from a valve closed position to a valve open position, which valve means controls the flow of fluid to a nozzle orifice in a non-contact fluid droplet applicator apparatus, notably an ink jet printer, which method comprises intermittently applying a transient drive current to the valve means which is insufficient to move the plunger sufficiently on its drive stroke towards the valve open position to permit the flow of fluid through the valve.
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