Electrophotographic member, electrophotographic process cartridge and electrophotographic image forming apparatus
US11465383B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 30, 2019 |
| Grant date | Oct 11, 2022 |
| Priority date | — |
| Expiry date | Jul 5, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2559/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Provided an electrophotographic member capable of causing less fog in an H/H environment even when used in a torque-reduced image forming apparatus. The member comprises an electro-conductive substrate, an electro-conductive layer thereon and insulating parts, the member having a surface having an electrical insulating first region and an electro-conductive second region, the first region and the second region being adjacent to each other, a total area of the second region in a square region put on an outer surface of the member is 30% to 80% of an area of the square region; two or more of the 200 straight lines drawn in the square region at an interval of 5 μm pass the second region at least once, and, the number of line segment LS having a length of 200 μm or more is 5% or less of the total number of the line segment LS.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.