Method for the preparation of electrostatographic photoreceptors

Details Method for the preparation of electrostatographic photoreceptors Method for the preparation of electrostatographic photoreceptors

1974-12-04

1976-05-11

Esposito, Michael F.

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

427 39, 427 41, 427 58, 427108, 427384, 427385, 427388, 96 1PE, 96 1C, 96 15, B05D 306, B05D 512

Patent

active

039565246

ABSTRACT:
Disclosed is an improved method for the preparation of an electrostatographic photoreceptor comprised of a layer of an organic active transport or insulating material overcoating a layer of a photoconductive material in operative connection with a conductive substrate. The method involves preparing a uniform liquid dispersion of the organic material in an appropriate solvent as a carrier phase having a pigmentary photoconductive material dispersed in it as a dispersed phase. The liquid dispersion is coated onto a conductive substrate and exposed to a direct stream of corona ions or a high intensity DC electric field, without contacting its surface with an electrode, to cause separation of the two phases into a two layered structure with the layer of photoconductive material being deposited between the substrate and the solution of organic material. Drying the structure by removing the solvent for the organic material provides the finished photoreceptor.

REFERENCES:
patent: 3689399 (1972-09-01), Ota
patent: 3689400 (1972-09-01), Ota et al.
patent: 3772013 (1973-11-01), Wells
patent: 3775104 (1973-11-01), Matsumoto
patent: 3804659 (1974-04-01), Sato et al.
patent: 3850630 (1974-11-01), Regenburger
patent: 3877935 (1975-04-01), Regenburger

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