Method of controlling toner concentration for electrophotographi

Details Method of controlling toner concentration for electrophotographi Method of controlling toner concentration for electrophotographi

1983-06-13

1985-04-30

Welsh, John D.

Radiation imagery chemistry: process, composition, or product th

Including control feature responsive to a test or measurement

430 97, 430122, 118690, 118657, 355 14D, G03G 1309

Patent

active

045144800

ABSTRACT:
An improved method of controlling toner concentration for electrophotographic copying apparatus employing a dual component developing material which is composed of toner particles and magnetic particles. The method is arranged to detect the amount of magnetic particles adhering onto a photosensitive member for controlling the toner replenishing amount according to the amount of the magnetic particles thus detected.

REFERENCES:
patent: 3348521 (1967-10-01), Hawk
patent: 3707134 (1972-12-01), Gawron
patent: 4088092 (1978-05-01), Noguchi
patent: 4141645 (1979-02-01), Reid et al.
patent: 4347299 (1982-08-01), Ozawa et al.
patent: 4405226 (1983-09-01), Kimura et al.

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