Electrographic printing apparatus with a liquid developement sys

Electrophotography – Image formation – Development

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399237, G03G 1510

Patent

active

058261451

ABSTRACT:
An electrographic printing apparatus comprises a rotatable charge bearing member, a rotatable roller assembly which applies a chargeable pre-wetting oil to the surface of the charge bearing member, a charger assembly which applies uniform charge to the surface of the charge bearing member and/or the pre-wetting oil coating, and a light source which discharges selected areas on the charge bearing member and/or the pre-wetting oil to produce a latent electrostatic image thereon. The electrographic printing apparatus further comprises a liquid development system comprising an ink head assembly which applies liquid toner to the charge bearing member thereby developing the latent electrostatic image, and a rotatable transfer member which receives the developed image from the charge bearing member and then transfers it to a substrate such as paper. The electrographic printing apparatus may also be adapted to produce color images on the substrate.

REFERENCES:
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patent: 3954640 (1976-05-01), Lu et al.
patent: 5530532 (1996-06-01), lino et al.
patent: 5561507 (1996-10-01), Shelffo et al.
patent: 5592269 (1997-01-01), Younes et al.
patent: 5596396 (1997-01-01), Landa et al.
The E-print 1000, Digital Offset Color Brochure from Indigo.
Xeikon DCP-1, Brochure of AM Mutligraphics.
IBM 3170 Full Color Digital Printer, Brochure of IBM, Oct. 1995.

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