Concentration sensing by viscosity measurement

Details Concentration sensing by viscosity measurement Concentration sensing by viscosity measurement

1995-05-15

1997-01-28

Pendegrass, Joan H.

Electrophotography

Diagnostics

Consumable

73 5415, 399237, G03G 1510

Patent

active

055982514

ABSTRACT:
In a liquid toner chamber (2) of a copier or printer a top plate (5) is moved upward and allowed to fall. The capacitance between the plates is used to define their separation and the time for the plates to move between predetermined locations is used to define the concentration of the liquid toner. This is accurate and inexpensive, while other measurement systems are not suitable to measure the high concentrations with which this invention functions.

REFERENCES:
patent: 3368390 (1968-02-01), Norcross
patent: 4343548 (1982-08-01), Bares et al.
patent: 5208637 (1993-05-01), Landa
Viscosity and Flow Measurement, A Laboratory Handbook of Rheology by J. R. Van Wazer et al, pp. 292-295.

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