Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus
US7655370B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 24, 2008 |
| Grant date | Feb 2, 2010 |
| Priority date | — |
| Expiry date | Jul 24, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G5/144
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Provided is an electrophotographic photosensitive member in which friction memory does not easily occur, and a process cartridge and an electrophotographic apparatus which have the electrophotographic photosensitive member. The electrophotographic photosensitive member having a photosensitive layer has a surface layer having a plurality of depressed portions which are independent from one another, where the minor axis diameter of the depressed portions is Rpc and the depth indicating the distance between the innermost part of a depressed portion and the opening surface thereof is Rdv, the depressed portions have a ratio of depth to minor axis diameter (Rdv/Rpc) on a surface of the photosensitive member of 1.0 or less, and the photosensitive layer has a charge transporting material with an ionization potential of 4.5 eV or more and 5.3 eV or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.