Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus
US12429785B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 28, 2022 |
| Grant date | Sep 30, 2025 |
| Priority date | — |
| Expiry date | Mar 2, 2044 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G21/1814
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electrophotographic photosensitive member includes an electroconductive support, a photosensitive layer, and a protection layer The protection layer comprises an electroconductive particle with has a surface containing a titanium oxide and a niobium atom. An atomic concentration ratio of the niobium atom to the titanium atom in the titanium oxide is 0.01 to 0.20, and the electroconductive particle is surface-treated with a compound having a silicon atom. A content ratio of the electroconductive particle in the protection layer is 5 vol % or more and less than 40 vol % with respect to a total volume of the protection layer, and relative concentrations of a plurality of atoms at a surface of the protection layer satisfy specific conditions, as determined by X-ray photoelectron spectroscopy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.