Electrophotographic member and electrophotographic image forming apparatus
US12420532B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 22, 2024 |
| Grant date | Sep 23, 2025 |
| Priority date | — |
| Expiry date | Feb 22, 2044 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2307/536
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An electrophotographic member comprising: a base material; an elastic layer on the base material; and a surface layer on the elastic layer, wherein the elastic layer comprises silicone rubber, the surface layer comprises fluoro rubber, a thickness of the surface layer is 3 μm or more, an elastic deformation power ηIT calculated from a load displacement curve, obtained with a nanoindentation test according to ISO 14577 by bringing a Vickers indenter into contact with an outer surface of the surface layer and setting a test load at 120 μN, is 30 to 50%, and a Martens hardness determined by the nanoindentation test at the outer surface of the surface layer is 12.0 to 18.0 N/mm2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.