Toner supply control method for electrophotographic copier

Details Toner supply control method for electrophotographic copier Toner supply control method for electrophotographic copier

1983-11-03

1985-06-11

Prescott, A. C.

Photocopying

Including fiber optics

355 14D, 118689, G03G 1508

Patent

active

045224811

ABSTRACT:
Light reflected from a reference pattern having a predetermined reflectivity is focused to a photoconductive element to form a latent image thereon. A degree of deposition of a toner on the latent image is sensed by a sensor and the toner supply to a developing unit is controlled in response to an output of the sensor. A fatigue standard is selected taking into account a fatigue characteristic particular to the photoconductor, so that a bias voltage applied to a developing roller in the developing unit is varied in response to the selected fatigue standard.

REFERENCES:
patent: 4343548 (1982-08-01), Bares et al.
patent: 4370053 (1983-01-01), Hirayama et al.
patent: 4395112 (1983-07-01), Miyakawa et al.
patent: 4436411 (1984-03-01), Miyoshi et al.
patent: 4462680 (1984-07-01), Ikeda

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