Electrophotographic apparatus including an electrostatic separat

Details Electrophotographic apparatus including an electrostatic separat Electrophotographic apparatus including an electrostatic separat

1980-09-08

1982-07-27

Moses, Richard L.

Photocopying

Including fiber optics

355 3TR, 355 14CH, 361225, G03G 1500, G03G 1516

Patent

active

043414575

ABSTRACT:
A transfer corona current is always maintained substantially constant independently of the surface potential of a photosensitive medium and environmental conditions, to thereby prevent the amount of charge on the back side of a transfer medium from fluctuating in accordance with said surface potential and environmental conditions. In addition, a separation corona current is maintained substantially constant to thereby further improve the stability of electrostatic separation. The transfer corona current is below a critical current value whereat the corona charge passes through the transfer medium, and the separation corona imparts to the back side of the transfer medium an amount of charge substantially equal to the amount of charge provided by the transfer corona.

REFERENCES:
patent: 3950680 (1976-04-01), Michaels
patent: 4055380 (1977-10-01), Borostyan
patent: 4077709 (1978-03-01), Borostyan
patent: 4183653 (1980-01-01), Satomi et al.
patent: 4190348 (1980-02-01), Friday

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