Method and device for measuring the viscosity of a fluid
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United States of America Patent
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-
Mar 6, 1990
Issued Date -
N/A
app pub date -
Feb 15, 1989
filing date -
Feb 17, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A device for measuring the viscosity of a fluid is shown which can be used to continuously measure the viscosity of the ink used in an ink jet printer. The pressure between two restrictors which respond differently to a change in viscosity is related to the total pressure drop across both restrictors to provide an indication of the change in viscosity of the fluid being dispensed by the printer. By utilizing this information, the viscosity of the ink can be modified to maintain the viscosity within the desired range.
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