Electrophotographic photosensitive member

Details Electrophotographic photosensitive member Electrophotographic photosensitive member

1998-10-27

1999-12-14

Martin, Roland

Radiation imagery chemistry: process, composition, or product th

Electric or magnetic imagery, e.g., xerography,...

Radiation-sensitive composition or product

430 591, 430 67, G03G 5047, G03G 5147

Patent

active

060015217

ABSTRACT:
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/mm.sup.2 nor more than 1300 kgf/mm.sup.2 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.degree., 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.

REFERENCES:
patent: 5262262 (1993-11-01), Yagi et al.
patent: 5536610 (1996-07-01), Ojima et al.
patent: 5623716 (1997-04-01), Masaki et al.
patent: 5849446 (1998-12-01), Hashizume et al.

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