Abstract: The present invention relates to an improvement of an electrophotographic sensitive member comprising an amorphous silicon photoconductive layer and an amorphous silicon carbide surface layer formed on said amorphous silicon photoconductive layer.An electrophotographic sensitive member with amorphous silicon as a photoconductive layer has been already practically used and a quantity thereof produced has been on the increase year by year. In this sensitive member, as a rule, in order to increase a surface hardness, a surface layer formed of amorphous silicon carbide has been formed.An electrophotographic sensitive member with such two layers as the fundamental layer structure improved in charge acceptance, residual electric potential, photosensitivy and the like by forming a carrier blocking layer containing boron, oxygen, nitrogen and the like in a quantity within a desired range between a substrate for use in a sensitive member and the amorphous silicon photoconductive layer has been provided.

Abstract: The present invention relates to an electrophotographic sensitive member, in particular to a divided function type electrophotographic sensitive member formed of amorphous silicon and amorphous silicon carbide capable of particularly widening an optical band gap range to heighten an optical sensitivity.Stabilized operation characteristics and durability are required for an electrophotographic sensitive member drum carried on instruments such as a high-speed copying machine and a laser beam printer. As for these requirements, hydrogenized amorphous silicon is being watched with interest from the viewpoints of superior abrasion resistance, heat resistance, anti-pollution property, optical sensitive characteristic and the like.

Abstract: The present invention relates to an electrophotographic sensitive member, in particular to an electophotographic sensitive member, in which a residual potential is reduced and a background smearing is prevented from being produced, and further to an electrophotographic sensitive member capable of carrying out a high-speed copying suitable for a semiconductor laser beam printer.A photosensitive member used in instruments, such as super-high-speed coying machine and laser beam printer, is used for a long time at a high-speed, so that the stability and durability are required for the operation.To this requirement, amorphous silicon hydride has been watched with interest in view of heat-resistance, abrasion-resistance, anti-pollution, photosensitive characteristic and the like.