Abstract: A photosensitive member of the present invention comprises an electrically conductive substrate, a charge generating layer and a charge transporting layer comprising amorphous carbon which contains hydrogen.The charge transporting layer contains about 0.1 to about 7 atomic % of oxygen and/or about 0.1 to about 5 atomic % of nitrogen based on all the constituent atoms therein.The photosensitive member of this construction is excellent in electrophotographic characteristics inclusive of charge transportability and charging ability.

Abstract: A photosensitive member of the present invention comprises an electrically conductive substrate, a photoconductive layer and an overcoat layer.The photoconductive layer comprises selenium-arsenic alloy layer, or selenium layer and selenium-tellurium layer formed in this order. The overcoat layer comprises amorphous carbon containing hydrogen and contains a kind of atom selected from the group consisting of halogen, oxygen and nitrogen.The photosensitive member of this construction is harmless and excellent in electrophotographic characteristics inclusive of durability and surface hardness.

Abstract: A photosensitive member of the present invention comprises an electrically conductive substrate, an evaporated layer of phthalocyanine compounds as a charge generating layer and a hydrogen-containing amorphous carbon layer as a charge transporting layer.The charge transporting layer contains hydrogen in an amount of about 30 to about 60 atomic % based on the combined amount of hydrogen atoms and carbon atoms.

Abstract: The present invention provides a photosensitive member comprising a carrier transporting layer of hydrogen-containing carbon, which is excellent in a charge transportability, a chargeability, a rigidity and resistances to corona, acid, moisture and heat, and has so small residual potential.

Abstract: The present invention provides a photosensitive member comprising a carrier transporting layer of hydrogen-containing carbon and an adhesive layer of hydrogen-containing carbon, said adhesive layer comprising at least one element selected from silicon, germanium and aluminum. The photosensitive member of the present invention is excellent in a charge transporting property, an adhesive property of a substrate with a hydrogen-containing layer, a chargeability, a rigidity and resistances to corona, acid, moisture and heat.

Abstract: The present invention provides a new photosensitive member which comprises a hydrogen-containing carbon undercoat layer controlled in the polarity by an element of IIIA or VA group, a hydrogen-containing C:H charge transporting layer and a charge generating layer, which has an excellent charge transortability, a charging ability, and preventing properties of charge injection and of increase of residual potential.

Abstract: The present invention provides a photosensitive member comprising a hydrogen-containing carbon layer as a charge transporting layer, which contains an element selected from the group consisting of Si, Ge and Sn; the hydrogen-containing carbon layer facilitates the injection of charge and decreases residual potential, and memory and increases sensitivity. Accordingly, a photosensitive member of the present invention is excellent in charge transporting property, sensitivity, charge holding property and imaged copy can be obtained.

Abstract: The invention disclosed relates to an image forming method using long wavelength light source. The method comprises a first step of charging and irradiating a photosensitive member to thereby form a negative electrostatic latent image; a second step of developing said negative electrostatic latent image by a reversal development; a third step of irradiating said photosensitive member with long wavelength light; a fourth step of transferring the developed electrostatic latent image to a paper; and a fifth step of irradiating said photosensitive member with long wavelength light. Said irradiating light used at the third step has the same or close wavelength region as the one used at the first step, and further, said irradiating light used at the fifth step has the same or close wavelength region as the one used at the first and third steps.

Abstract: The invention disclosed relates to a photosensitive member which comprises a conductive substrate, a first amorphous silicon: germanium layer, an amorphous silicon layer formed on said first layer and having a thickness of about 10 to 100 .mu.m and a second amorphous silicon: germanium layer formed on said amorphous silicon layer and having a thickness of less than about 4 .mu.m. The photosensitive member of the present invention has improved sensitivity toward long wavelength light and excellent chargeability, and is free of residual potential and interference phenomena.

Abstract: The present invention relates to a photosensitive member containing an a-Si:Ge layer with an a-Si intermediate layer.A photosensitive member containing a-Si:Ge has an excellent sensitivity to long wave light so that it is suitable for an electrophotographic system equipped with laser beam printer. However, the sensitivity of the member had not been improved because of their weak dark resistance and lower mobility of carrier in general.In the present invention, it is provided a photosensitive member having a-Si:Ge layer excellent in the sensitivity to long wave length by controlling the balance between the Ge content and the thickness of the a-Si:Ge layer and the concentration of oxygen or oxygen and carbon in the electroconductive layer.

Abstract: Though a-Si:Ge has a high absorption of long wave light, so that it can be used to improve the electrophotosensitive members in the sensitivity, and it is expected as photosensitive members for printers using semiconductor laser. However, a-Si:Ge has a tendency to prevent the movement of a carrier generated to lower a sensitivity and increase a residual potential.In the present invention, the above problems are improved by forming a depletion layer in a-Si:Ge layer to improve the mobility in forward direction of the carrier.

Abstract: An electrophotosensitive member for use in electrophotography includes a plurality of amorphous silicon and amorphous silicon:germanium layers that are arranged in an alternating fashion. The two outermost layers are made up of amorphous silicon so that each amorphous silicon:germanium layer is sandwiched between two amorphous silicon layers.

Abstract: The present invention provides an electrophotosensitive member comprising laminating a layer composed substantially of amorphous silicon, a layer composed substantially of amorphous silicon:germanium and a layer composed substantially of amorphous silicon in this order on an electroconductive substrate, an electrophotosensitive member comprising laminating a layer composed substantially of amorphous silicon, a layer composed substantially of amorphous silicon:germanium and a layer composed substantially of amorphous silicon in this order on an electroconductive substrate, characterized in that said layer composed substantially of amorphous silicon:germanium is situated away from said substrate by a range of 20 to 80% based on the total thickness of these layers.

Abstract: A photosensitive member which comprises a photoconductive layer and an insulating layer located on the photoconductive layer, the photoconductive layer including amorphous silicon and the insulating layer including amorphous silicon, carbon, oxygen and fluorine. The photoconductive layer has a higher resistivity than the photosensitive member. A barrier layer may be located beneath the photoconductive layer, the barrier layer including either amorphous silicon, oxygen and a Group III impurity or amorphous silicon, carbon and oxygen.