Electrostatic reproducing machine

Details Electrostatic reproducing machine Electrostatic reproducing machine

1983-04-28

1985-01-29

Moses, R. L.

Photocopying

Including fiber optics

355 16, G03G 1516

Patent

active

044962339

ABSTRACT:
Electrostatographic reproducing apparatus comprising a reusable electrostatographic imaging web having an insulating imaging surface positioned between a web supply roll and a web take up roll, each roll being fastened to the end of the web. The web is provided with means to form an electrostatic latent image on the web and develop said image with a toner image. The image is formed and developed on the passage of the web from the supply roll to the take up roll where the web in the toner image therein is brought into contact with a copy sheet and wound around the take up roll during the first cycle of a two cycle imaging process. The apparatus includes a copy substrate entrance plus means to feed the copy substrate along a copy path with a distance along the imaging surface path from the image forming station with lead edge of an image is formed in the imaging surface to the initial line of contact of the imaging surface with the copy substrate being equal to the distance along the copy substrate path in the copy sheet entrance to the initial line of contact with the lead edge of the image on the imaging surface. The copy substrate is wound around the take up roll to form a sandwich comprising the insulating layer and the electrostatic latent image the toner image copy substrate dielectric layer and conductive layer to which a potential is applied after the sandwich has been formed of a magnitude in potential sufficient to create an electric field to transfer toner from the insulating layer to the copy substrate. The electrostatic latent image present on the insulating layer is discharged before the copy substrate is stripped from the dielectric layer.

REFERENCES:
patent: 2807233 (1957-09-01), Fitch
patent: 2836725 (1958-05-01), Vyverberg
patent: 3190199 (1965-06-01), Clark
patent: 3707138 (1972-12-01), Cartwright
patent: 3876300 (1975-04-01), Washio et al.
patent: 3927934 (1975-12-01), Cook
patent: 4141728 (1979-02-01), Hamphill
patent: 4254199 (1981-03-01), Tutihasi
patent: 4289395 (1981-09-01), Stelben
Xerox Disclosure Journal, vol. 7, No. 2, Mar./Apr. 1982, p. 97; J. S. Demar: "Compact Xerographic Copier".

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