Photovoltaic photo-receptor and electrophotographing apparatus

An electrophotographing apparatus, comprising:

• a photovoltaic photo-receptor which includes a substrate and photovoltaic means which comprises a plurality of semiconductor junctions laminated on said substrate, said semiconductor junctions being responsive to irradiation of a light image for generating a respective photo-electromotive force voltage;
• light source means for irradiating said light image onto said photovoltaic photo-receptor, thereby forming on a surface of said photovoltaic photo-receptor an electrostatic latent image with a voltage which is obtained by adding each of said respective photo-electromotive force voltages to each other;
• toner supplying means for toner-developing said electrostatic latent image to form a toner image by bringing a toner into contact with a surface of said photovoltaic photoreceptor;
• and
• transcribing means for transcribing the toner image onto a paper.

An electrophotographing apparatus, comprising:

• a photovoltaic photo-receptor which includes a transparent substrate, a transparent electrode formed on said transparent substrate, a plurality of photovoltaic layers which are sequentially laminated and formed on said transparent electrode and which are each composed of an amorphous semiconductor having a respective photovoltaic function, and a surface layer formed on said photovoltaic layer so as to be an uppermost layer, said photovoltaic layers being responsive to irradiation of a light image onto the surface for generating photovoltaic voltages in accordance with said respective photovoltaic functions, whereby an electrostatic latent image of a potential which is established by adding said voltages generated at said photovoltaic layers is formed on said surface layer, said photovoltaic layers being formed to be gradually thickened from a lower most layer to said uppermost layer such that said light image cannot be absorbed by lower layers;
• light source means disposed below said transparent substrate for irradiating said light image onto said plurality of photovoltaic layers through said transparent substrate and said transparent electrode;
• toner supplying means for toner-developing said electrostatic latent image into a toner image by bringing a toner into contact with the surface of said photovoltaic photo-receptor;
• and