Browse Prior Art Database

XEROGRAPHY METHOD AND APPARATUS

IP.com Disclosure Number: IPCOM000023590D
Original Publication Date: 1978-Apr-30
Included in the Prior Art Database: 2004-Mar-31
Document File: 2 page(s) / 324K

Publishing Venue

Xerox Disclosure Journal

Abstract

Disclosed is an apparatus for producing reproductions utili-zing an electrostatographic process whereby a biased charging roller and means for applying an uninterrupted film of liquid developer in the nip between the charging roller and the photoconductive insulating layer is provided. The biased roller can be submerged in a source of liquid developer for a latent image and the liquid and an electrostatic charge are substantially simultaneously applied to the photoconductive insulating layer.

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XEROX DISCLOSURE JOURNAL

XEROGRAPHY METHOD AND APPARATUS Proposed Classification
Thomas Camis U.S. Cl. 96/1
Edward C. Mutschler tnt. Cl. G03g
Morton Silverberg

Disclosed is an apparatus for producing reproductions utili-
zing an electrostatographic process whereby a biased charging
roller and means for applying an uninterrupted film of liquid
developer in the nip between the charging roller and the
photoconductive insulating layer is provided. The biased
roller can be submerged in a source of liquid developer for a
latent image and the liquid and an electrostatic charge are
substantially simultaneously applied to the photoconductive
insulating layer.

Under the influence of the biasing voltage, charge is injected
from the roller into the liquid and transported to the surface
of the photoconductive insulating layer. The electrostatic
charge generally resides in a layer less than 0.5 microns but
it can be injected into the surface of the photoreceptor.
Cleaning the liquid layer to a thickness of less than 0.5
microns generally does not change the charge voltage level.

In a specific embodiment there is described an electrostatic
imaging system which is provided with a means for roller
coating the photoconductive surface with liquid developer in a
thickness greater than the depth of the roughness on the
surface of the photoconductive layer (i.e., means are provided
for applying an uninterrupted film of liquid developer over
the surface of the photoconductive layer substantially simul-
taneou...