Trigonal Se layer overcoated by bis(4-diethylamino-2-methylphenyl)phenylmethane containing polycarbonate

An imaging member comprising a photoconductive layer of trigonal selenium dispersed in a resinous binder and a contiguous layer of electrically active material consisting essentially of an electrically inactive polycarbonate resin having dispersed therein from about 15 to about 75 percent by weight of bis(4-diethylamino-2-methylphenyl)phenylmethane, said trigonal selenium exhibiting the capability of photo-generation of holes and injection of said holes and said electrically active material being substantially non-absorbing in the spectral region at which the trigonal selenium generates and injects photo-generated holes but being capable of supporting, the injection of photo-generated holes from said trigonal selenium and transporting said holes through said electrically active material.

An imaging member comprising a photoconductive layer comprising an insulating organic resin matrix and trigonal selenium, with substantially all of the trigonal selenium in said layer in a multiplicity of interlocking photoconductive continuous paths through the thickness of said layer, said photoconductive paths being present in a volume concentration, based on the volume of said layer, of from about 1 to 25 percent and a contiguous layer of electrically active material consisting essentially of an electrically inactive polycarbonate resin having dispersed therein from about 15 to 75 percent by weight of bis(4-diethylamino-2-methylphenyl)phenylmethane, said photoconductive layer exhibiting the capability of photo-generation of holes and injection of said holes and said electrically active material being substantially non-absorbing in the spectral region at which the photoconductive layer generates and injects photo-generated holes but being capable of supporting the injection of photo-generated holes from said photoconductive layer and transporting said holes through said electrically active material.

An imaging member comprising a photoconductive layer comprising an insulating organic resin matrix containing therein trigonal selenium particles, with substantially all of the trigonal selenium particles being in substantial particle-to-particle contact in said layer in a multiplicity of interlocking photoconductive paths through the thickness of said layer, said photoconductive paths being present in a volume concentration, based on the volume of said layer, of from about 1 to 25 percent, and a contiguous layer of electrically active material consisting essentially of an electrically inactive polycarbonate resin having dispersed therein from about 15 to about 75 percent by weight of bis(4-diethylamino-2-methylphenyl)phenylmethane, said photoconductive layer exhibiting the capability of photo-generation of holes and injection of said holes and said electrically active material being substantially non-absorbing in the spectral region at which the photoconductive layer generates and injects photo-generated holes, but being capable of supporting the injection of photo-generated holes from said trigonal selenium and transporting said holes through electrically active material.

A method of imaging which comprises:

• a. providing an imaging member comprising a layer of trigonal selenium and a contiguous layer of electrically active material consisting essentially of an electrically inactive polycarbonate resin having dispersed therein from about 15 to about 75 percent by weight of bis(4-diethylamino-2-methylphenyl)phenylmethane, said trigonal selenium exhibiting the capability of photo-generation of holes and injection of said holes, and said electrically active material being substantially non-absorbing in the spectral region at which the trigonal selenium generates and injects photo-generated holes but being capable of supporting the injection of photo-generated holes from said trigonal selenium and transporting said holes through said electrically active material;
• b. uniformly electrostatically charging said member, followed by;
• c. imagewise exposing said charged member to a source of activating radiation to which the trigonal selenium is absorbing and to which the layer of electrically active material is non-absorbing, whereby the photo-generated holes from said trigonal selenium are injected into and are transported through said layer of electrically active material to form a latent electrostatic image on the surface of said member.

A method of imaging which comprises:

• a. providing an imaging member comprising trigonal selenium dispersed in a resinous binder and a contiguous layer of electrically active material consisting essentially of an electrically inactive polycarbonate resin having dispersed therein from about 15 to about 75 percent by weight of bis(4-diethylamino-2-methylphenyl)phenylmethane, said photoconductive layer exhibiting the capability of photo-generation of holes and injection of said holes and said electrically active material being substantially non-absorbing in the spectral region at which the photoconductive layer generates and injects photo-generated holes but being capable of supporting the injection of photo-generated holes from said photoconductive layer and transporting said holes through said electrically active material;
• b. uniformly electrostatically charging said member followed by
• c. imagewise exposing said charged member to a source of activating radiation to which the trigonal selenium dispersed in a resinous binder is absorbing and to which the layer of electrically active material is non-absorbing, whereby the photo-generated holes generated by said trigonal selenium dispersed in a binder are injected into and are transported through said layer of electrically active material to form a latent electrostatic image on the surface of said member.