Electret toner concentration monitor

Details Electret toner concentration monitor Electret toner concentration monitor

1990-08-31

1991-03-05

Grimley, A. T.

Photocopying

Contact printing

Light boxes

118691, 355 20B, 355208, 356440, G03G 2100

Patent

active

049981412

ABSTRACT:
A toner concentration monitor includes a polarized dielectric member which, when dipped into a development mixture of carrier and toner particles, provides an accurate indication of the toner concentration of the mixture by the amount of toner particles which adhere to the member. The polarized dielectric member is preferably an electret.

REFERENCES:
patent: 4135100 (1979-01-01), Harada et al.
patent: 4256402 (1981-03-01), Nishikawa
patent: 4441038 (1984-04-01), Tanaka et al.
patent: 4447145 (1984-05-01), Snelling et al.

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