Electrophotographic member, process cartridge and electrophotographic apparatus
US10884352B2 · kind B2 · utility
4Cited by
26References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 27, 2019 |
| Grant date | Jan 5, 2021 |
| Priority date | — |
| Expiry date | Aug 1, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G21/0005
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The electrophotographic member includes an electro-conductive substrate, a urethane resin having a structure of structural formula (1), an anion, and a resin particle, and has a protrusion derived from the resin particle on an outer surface thereof, the resin particle contains one or both of a urethane resin and a polyamide resin, the resin layer further contains carbon black, and the carbon black extracted from the resin layer has a BET specific surface area of 33 m2/g or more and 133 m2/g or less, and DBP absorption amount at a 70% torque value in DBP absorption measurement of 42 ml/100 g or more and 90 ml/100 g or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.