Electrophotographic photosensitive member, and electrophotographic apparatus and process cartridge each including the electrophotographic photosensitive member
US9389523B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2014 |
| Grant date | Jul 12, 2016 |
| Priority date | — |
| Expiry date | Feb 26, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G21/1803
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Provided is an electrophotographic photosensitive member excellent in suppression of image deletion and electric potential variation. The surface layer of the electrophotographic photosensitive member comprises a hole transporting substance. The hole transporting substance is one of a compound consisting of a carbon atom and a hydrogen atom, or a compound consisting of a carbon atom, a hydrogen atom, and an oxygen atom. The hole transporting substance comprises a conjugate structure containing 24 or more sp2 carbon atoms. The conjugate structure comprises a condensed polycyclic structure comprising 12 or more sp2 carbon atoms. A ratio of a number of sp2 carbon atoms is 55% or more based on a total number of carbon atoms in the hole transporting substance, and a ratio of a number of sp3 carbon atoms is 10% or more based on a total number of carbon atoms in the hole transporting substance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.