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AssigneeCanon Kabushiki Kaisha
InventorsMakoto Aoki, Satoshi Kojima, Hironori Owaki, Kazuo Hosoi, Jun Ohira
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To provide a high-image-quality electrophotographic photosensitive member having a high sensitivity for a wavelength close to 380 to 500 nm, remarkable image resolution property in which absorption of the wavelength is hardly recognized, working-environment characteristic and high safety and superior in abrasion resistance and fabrication easiness and reducing optical memories and an electrophotographic apparatus using the high-image-quality electrophotographic photosensitive member. In the case of an electrophotographic photosensitive member having a substrate, photoconductive layer formed on the substrate and surface layer formed on the photoconductive layer and using silicon and nitrogen atoms as base material and containing an amorphous material containing at least oxygen atoms, the surface layer contains nitrogen atoms as an average concentration shown by the following expression (1) and contains oxygen atoms by the maximum value Omax of the number of oxygen atoms in the thickness direction: 0.3≦N/(Si+N)≦0.7 (1).
An electrophotographic photosensitive member comprising a substrate, a photoconductive layer formed on the substrate and a surface layer formed on the photoconductive layer using silicon and nitrogen atoms as the base material and constituted of non-single-crystal material at least containing oxygen atoms, characterized in that the surface layer contains nitrogen atoms as an average concentration shown by the following expression (1) and contains oxygen atoms by the maximum value Omax of the number of oxygen atoms in the thickness direction:
An electrophotographic photosensitive member comprising:
An electrophotographic photosensitive member comprising:
Dependencies are inferred from the claim text.