Electrophotographic reversal developing apparatus with control o

Details Electrophotographic reversal developing apparatus with control o Electrophotographic reversal developing apparatus with control o

1982-12-02

1985-06-04

Moses, Richard L.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

355 3DD, 118647, G03G 1500

Patent

active

045211035

ABSTRACT:
An electrophotographic reversal-developing apparatus according to this invention comprises first means for determining the temperature and humidity of the surroundings in which an electrophotosensitive material is put; and second means responsive to the so determined temperature and humidity of the surroundings for controlling a biase voltage to be applied to a one-component toner, thereby preventing any fog from appearing in a reversal-developed photographic image.

REFERENCES:
patent: 3981268 (1976-09-01), Tsukamoto et al.
patent: 4084538 (1978-04-01), Tanaka
patent: 4314755 (1982-02-01), Kinashi
patent: 4395112 (1983-07-01), Miyakawa et al.
Electrophotography, by R. M. Schaffert, Focal Press, 1975, pp. 318-320.

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