Electrophotographic member and electrophotographic image forming apparatus
US12158711B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2021 |
| Grant date | Dec 3, 2024 |
| Priority date | — |
| Expiry date | Apr 2, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/00957
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electrophotographic member comprising a base layer and a surface layer, the surface layer including at least one of an acrylic resin and a methacrylic resin, perfluoropolyether having a specified structure and a fluorine-containing copolymer, the fluorine-containing copolymer having a first polymerized unit of at least one of methyl acrylate and methyl methacrylate, and a second polymerized unit of at least one of methyl acrylate having a fluoroalkyl group and methyl methacrylate having a fluoroalkyl group, a molar ratio between the first polymerized unit and the second polymerized unit being 7 to 12, the fluorine-containing copolymer having Mw of 80000 or more and 150000 or less, and the ratio between Mn and Mw (Mw/Mn) being 3.0 or more and 6.5 or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.