Dielectric overcoated photoresponsive imaging member and imaging

Details Dielectric overcoated photoresponsive imaging member and imaging Dielectric overcoated photoresponsive imaging member and imaging

1979-05-29

1981-06-23

Martin, Jr., Roland E.

Radiation imagery chemistry: process, composition, or product th

Electric or magnetic imagery, e.g., xerography,...

G03G 1322

Patent

active

042751322

ABSTRACT:
This invention relates to an electrophotographic imaging member or device and an imaging method using this imaging member, which member or device is comprised of a substrate, a layer of a charge carrier injecting material comprised of carbon or graphite dispersed in a polymer, a layer of a charge carrier transport material, a layer of a photoconductive charge carrier generating material and an electrically insulating overcoating layer. In one embodiment the imaging member is layered and comprises from the bottom up a substrate; a layer of material comprised of carbon black dispersed in a polymer, and capable of injecting holes into a layer on its surface; a hole transport layer in operative contact with the layer of hole injecting material which transport layer comprises a combination of an electrically inactive organic resin having dispersed therein an electrically active material, the combination of which is substantially nonabsorbing to visible electromagnetic radiation, but allows the injecting of photogenerated holes from a charge generator layer in contact with the hole transport layer and electrically induced holes from the layer of injecting material; a layer of charge generating material on and in operative connection with the charge transport layer and a layer of insulating organic resin overlaying the layer of charge generating material.

REFERENCES:
patent: 3639121 (1972-02-01), York
patent: 3899327 (1975-08-01), Esser et al.
patent: 4015985 (1977-04-01), Jones
patent: 4123269 (1978-10-01), Von Horne et al.
patent: 4133684 (1979-01-01), Tarumi et al.

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