Latent electrostatic image developing device

Details Latent electrostatic image developing device Latent electrostatic image developing device

1981-09-09

1983-07-26

Prescott, A. C.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

355 3DD, 118647, G03G 1500

Patent

active

043951120

ABSTRACT:
A latent electrostatic image developing device for developing a latent electrostatic image formed on an image-bearing member by applying a developer thereto. The developing device comprises a developer applicator means for holding the developer on its surface, carrying the developer to a developing zone and applying it to the latent electrostatic image in the developing zone and a bias voltage applying means for applying a bias voltage to the developer held on the surface of the developer applicator means. The developing device further includes a detector means for detecting the relative humidity of the environmental atmosphere and a control means for changing the magnitude of the applied bias voltage to a lower value when the detected relative humidity of the atmosphere exceeds a predetermined value.

REFERENCES:
patent: 2919672 (1960-01-01), Benn et al.
patent: 3677632 (1972-07-01), MacDonald, Jr.
patent: 3814516 (1974-06-01), Whited
patent: 3816756 (1974-06-01), Bresnick
patent: 3877416 (1975-04-01), Donohue
patent: 4194830 (1980-03-01), Ohnuma et al.
patent: 4314755 (1982-02-01), Kinashi

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