Toner concentration control device

Details Toner concentration control device Toner concentration control device

1979-08-02

1980-12-02

Pianalto, Bernard D.

Coating apparatus

Control means responsive to a randomly occurring sensed...

Responsive to condition of coating material

118652, 118658, G03G 1506, G03G 1509

Patent

active

042364850

ABSTRACT:
A toner concentration control device comprising a toner supply mechanism for supplying toner to a developing device, conveying means for conveying the developer, detecting means for optically detecting an amount of the toner adhering to a conveying surface of the conveying means and a control mechanism for controlling the toner supply mechanism based on the detected amount of toner. Thus, an amount of fresh toner corresponding to an amount of toner spent by development is supplied from the toner mechanism to a developer in the developing device to maintain a constant toner concentration in the developer.

REFERENCES:
patent: 4032227 (1977-06-01), Hubbard et al.
patent: 4064834 (1977-12-01), Sund
patent: 4112867 (1978-09-01), Suzuki et al.
patent: 4190018 (1980-02-01), Ariotti et al.

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