Electrophotographic photosensitive member
US6001521A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 27, 1998 |
| Grant date | Dec 14, 1999 |
| Priority date | — |
| Expiry date | Oct 27, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G5/14704
- WIPO fieldOptics
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.