| 摘要 |
For providing an electrophotographic photosensitive member that can always maintain good images without occurrence of fusion of toner, independent of the circumstances and the combination of urging pressure of a cleaner, process speed, components contained in toner, etc. and that can always maintain good images of high resolution and even density without occurrence of uneven shaving against a cleaning system or toner, the outermost surface thereof is comprised of a non-monocrystalline carbon film comprising hydrogen and having a dynamic hardness not less than 300 kgf/mm2 nor more than 1300 kgf/mm2 measured using a diamond stylus of a triangular pyramid having a tip of a radius not more than 0.1 mu m and an edge-to-edge angle of 115 DEG , or the outermost surface thereof is comprised of a non-monocrystalline carbon film comprising hydrogen and having a critical load at rupture of the film not less than 50 mN and not more than 700 mN measured when exerting a load on a diamond stylus having a tip of a radius not more than 15 mu m while moving the stylus at an amplitude of 20 to 100 mu m, an oscillation frequency of 30 Hz, and a feed rate of 2 to 20 mu m/sec.
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