Transfer type electrophotographic copying apparatus with substan

Details Transfer type electrophotographic copying apparatus with substan Transfer type electrophotographic copying apparatus with substan

1982-04-14

1985-03-05

Grimley, A. T.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

355 14CH, 355 14E, G03G 1500

Patent

active

045027773

ABSTRACT:
An electrophotographic copying apparatus which includes a photosensitive member or photoreceptor which is repeatedly utilized for formation of electrostatic latent images on it, a device for forming an electrostatic latent image on a photoreceptor surface, a device for detecting conditions affecting the operating characteristics of the photoreceptor, a device for determining the state of operation of the image forming device according to the conditions detected by the detecting device, the conditions being in a predetermined relationship which is specifically represented by a predetermined reference equation, a device for correcting the state of operation of the image forming device so as to render a potential of the latent image formed on the photoreceptor surface substantially constant, and a device for successively revising the reference equation based on the conditions detected by the detecting device and the state of operation which has been corrected by the correcting device.

REFERENCES:
patent: 3788739 (1974-01-01), Coriale
patent: 3981268 (1976-09-01), Tsakamoto et al.
patent: 4019102 (1977-04-01), Wallot
patent: 4136945 (1979-01-01), Stephens
patent: 4215930 (1980-08-01), Miyakawa et al.
patent: 4284344 (1981-08-01), Okamoto et al.
patent: 4326796 (1982-04-01), Champion et al.
patent: 4355885 (1982-10-01), Nagashima

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