Electrophotographic member, method of producing the same, process cartridge, and electrophotographic apparatus
US9977359B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 1, 2017 |
| Grant date | May 22, 2018 |
| Priority date | — |
| Expiry date | Feb 1, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0818
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Provided is an electrophotographic member that is excellent in charge-imparting performance for a toner, and that hardly causes tackiness on its surface even when placed under a high-temperature and high-humidity environment over a long time period. The electrophotographic member includes a substrate and a surface layer, in which the surface layer satisfies the following requirements (A) and (B): (A) the surface layer contains, in a region from its surface to a depth of up to 0.1 μm, a copolymer containing a constituent unit represented by the following structural formula (1), and at least one selected from the group consisting of a constituent unit represented by the following structural formula (2) and a constituent unit represented by the following structural formula (3); and (B) the concentration of a nitrogen atom derived from a nitrogen-containing aromatic heterocyclic amine structure in the copolymer is from 6.0 mass % to 30.0 mass %.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.