Method and device for measuring the viscosity of a fluid

Details Method and device for measuring the viscosity of a fluid Method and device for measuring the viscosity of a fluid

1989-02-15

1990-03-06

Williams, Hezron E.

Measuring and testing

Liquid analysis or analysis of the suspension of solids in a...

Viscosity

G01N 1108

Patent

active

049055038

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.

REFERENCES:
patent: 3938369 (1976-02-01), de Bok
patent: 4157029 (1979-06-01), Leca et al.
patent: 4442704 (1984-04-01), Swearingen
patent: 4644781 (1987-02-01), Mon
patent: 4677845 (1987-07-01), Izumi et al.

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