Developing agent density controlling device

Details Developing agent density controlling device Developing agent density controlling device

1982-09-07

1983-12-13

Pianalto, Bernard D.

Coating apparatus

With indicating, testing, inspecting, or measuring means

118665, 118691, B05C 1100, G03G 1500

Patent

active

044199600

ABSTRACT:
A device for detecting and controlling developing agent toner density includes a rotating magnet for forming a magnetic brush of developing agent and an electrically conductive glass plate for separating the toner from the carrier so that the density of the toner can be optically measured and used to control the addition of toner to the developing agent.

REFERENCES:
patent: 3897748 (1975-08-01), Hirata et al.

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