Electrostatic image forming method

Details Electrostatic image forming method Electrostatic image forming method

1985-11-01

1986-12-09

Martin, Roland E.

Radiation imagery chemistry: process, composition, or product th

Electric or magnetic imagery, e.g., xerography,...

Electrostatic image transfer

355 3TE, G03G 13044

Patent

active

046280170

ABSTRACT:
An electrostatic image forming method for various kinds of image forming apparatuses. At an exposing step, a light image having a light quantity region greater than a predetermined quantity of light is projected to form on a dielectric layer of a dielectric recording medium a positive electrostatic image which has such a tendency that the surface potential or the amount of surface charge is comparatively small in a region in which the quantity of light is comparatively large. A full-surface exposing step using a predetermined quantity of exposing light is added to before or after the exposure to the light image, so that the total quantity of exposing light exceeds a predetermined quantity of light. The quantity of light of the light image is controllable to a larger one which provides a positive electrostatic image on the dielectric layer, or to a smaller one which provides a negative latent image. After an image has been formed, a predetermined period of time for adaptation is provided to ensure a potential contrast so that a positive electrostatic latent image may be formed under advantageous image forming conditions.

REFERENCES:
patent: 3653891 (1972-04-01), Thourson et al.
patent: 3830645 (1974-08-01), Zweig
patent: 3963488 (1976-06-01), Brushenko

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