Electrophotographic process utilizing electrostatic separation a

Details Electrophotographic process utilizing electrostatic separation a Electrophotographic process utilizing electrostatic separation a

1982-06-14

1984-11-13

Prescott, A. C.

Photocopying

Including fiber optics

355 3SH, 355 14TR, G03G 1500

Patent

active

044822405

ABSTRACT:
An electrophotographic process includes the steps of forming a visible image composed of coloring particles on a photosensitive member having a surface insulating layer, providing the visible image with an electrostatic charge by first corona discharge, bringing a transfer sheet into contact with the photosensitive member, providing the rear surface of the transfer sheet with a predetermined amount of an electrostatic charge of a polarity opposite to that of the charge on the coloring particles by second corona discharge thereby transferring the visible image onto the transfer sheet, and providing the rear surface of the transfer sheet with an electrostatic charge, which is the same in polarity as that of the coloring particles but is less in the amount than that provided by the second corona discharge, thereby separating the transfer sheet from the photosensitive member, and an apparatus adapted for executing the above-mentioned process.

REFERENCES:
patent: 3357400 (1967-12-01), Manghirmalani
patent: 3575502 (1971-04-01), Eppe
patent: 3870515 (1975-03-01), Kaupp
patent: 3998536 (1976-12-01), Kaupp
patent: 4077709 (1978-03-01), Borostyan et al.
patent: 4275968 (1981-06-01), Irwin
patent: 4286032 (1981-08-01), Ito et al.
patent: 4341457 (1982-07-01), Nakahata et al.
patent: 4353648 (1982-10-01), Tanaka et al.
patent: 4402591 (1983-09-01), Nakahata

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