Toner concentration control system for liquid electrophotography

Details Toner concentration control system for liquid electrophotography Toner concentration control system for liquid electrophotography

1994-06-03

1995-09-05

Williams, Hezron E.

Measuring and testing

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

Content or effect of a constituent of a liquid mixture

73291, 73304R, 324 711, 324693, 355203, 355246, 118689, G01N 2707, G03G 1510

Patent

active

054470560

ABSTRACT:
An "L" shaped element having horizontal and vertical sections, is submerged in the liquid toner concentrate such that the horizontal section is totally submerged while the vertical section is submerged proportionally to an amount of the liquid toner concentrate. A voltage source is connected to the "L" shaped element. A second element is placed in close proximity to the horizontal section of the "L" shaped element and is also totally submerged in the liquid toner concentrate. Next, a third element is placed in close proximity to the vertical section of the "L" shaped element. The current flowing from the horizontal section of the "L" shaped element through the liquid toner concentrate to the second element is proportional to the concentration of solid. By measuring the current flowing from the vertical section of the "L" shaped element through the liquid toner concentrate to the third element and dividing by the current in the second plate, the volume of the liquid toner concentrate can easily be calculated.

REFERENCES:
patent: 1532871 (1925-04-01), Bloch
patent: 3802381 (1974-04-01), O'Neill et al.
patent: 4310238 (1982-01-01), Mochizuki et al.
patent: 4343548 (1982-08-01), Bares et al.
patent: 4860924 (1989-08-01), Simms
patent: 5003352 (1991-03-01), Duchesne et al.

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