Ink level control system for offset printing presses
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United States of America Patent
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-
Apr 14, 1992
Grant Date -
N/A
app pub date -
May 29, 1990
filing date -
May 29, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus for monitoring and controlling the level of the ink in the ink fountain of offset printing presses, using an ultrasonic transducer for measuring the distance between the ink and the transducer which includes a microprocessor system for calculating a time duration of an ink feed cycle to fill the ink fountain to a preset ink level and for generating an ink cycle control signal based on time duration data and ink viscosity characteristics. A control valve activated by the ink cycle control signal delivers ink to the ink fountain.
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