Apparatus for controlling toner density

Details Apparatus for controlling toner density Apparatus for controlling toner density

1982-05-13

1984-07-31

Prescott, A. C.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

355 3DD, 118691, 430 30, G03G 1500

Patent

active

044626800

ABSTRACT:
A toner density control apparatus which assures always the optimum toner supply and good development with toner irrespective of the kind of original to be copied and/or the number of copies to be continuously made. The apparatus has a detector for detecting the density of toner. The quantity of toner supply is controlled using a value variable at a changing rate different from the changing rate of the density difference between the reference toner density and the detected toner density.

REFERENCES:
patent: 3892672 (1975-07-01), Gawron
patent: 4155638 (1979-05-01), Blitzer
patent: 4266141 (1981-05-01), Hirakura et al.
patent: 4343548 (1982-08-01), Bares et al.
patent: 4357901 (1982-11-01), Fagen, Jr. et al.

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