Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus
US10539888B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 2018 |
| Grant date | Jan 21, 2020 |
| Priority date | — |
| Expiry date | Jun 13, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G5/14786
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electrophotographic photosensitive member includes an electroconductive support member and a photosensitive layer. The uppermost layer of the electrophotographic photosensitive member defines a surface layer, and the surface layer contains polytetrafluoroethylene particles, a charge transporting material, and polyvinyl acetal. The proportion of the polyvinyl acetal content to the polytetrafluoroethylene particles content in the surface layer is in the range of 0.1% by mass to 15.0% by mass, and the charge transporting material content in the surface layer is 35% by mass or more relative to the total mass of the surface layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.