Developer concentration detecting and replenishment device

Details Developer concentration detecting and replenishment device Developer concentration detecting and replenishment device

1974-06-11

1976-01-13

Moses, Richard L.

Photocopying

Including fiber optics

118637, 222 57, G03G 1500

Patent

active

039320340

ABSTRACT:
In a developer density adjusting device comprising concentration detector means for detecting the density of toner in a developer and concentration adjusting means for adjusting the toner to a proper concentration, the detector means is effective to detect the dielectric breakdown voltage of the developer to thereby detect the concentration of the developer and the concentration adjusting means is operable in response to a signal from the detector means.

REFERENCES:
patent: 3094049 (1963-06-01), Snelling
patent: 3376853 (1968-04-01), Weiler et al.
patent: 3376854 (1968-04-01), Kamola
patent: 3399652 (1968-09-01), Gawron
patent: 3527651 (1970-09-01), Shelffo et al.
patent: 3572551 (1971-03-01), Gillespie et al.
patent: 3587521 (1971-06-01), Rubenstein et al.
patent: 3707134 (1972-12-01), Gawron
patent: 3719165 (1973-03-01), Trachienberg et al.
patent: 3779204 (1973-12-01), Altmann
patent: 3821938 (1974-07-01), Bacon et al.

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