Charging roller and image forming apparatus
US11460789B2 · kind B2 · utility
0Cited by
6References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 12, 2019 |
| Grant date | Oct 4, 2022 |
| Priority date | — |
| Expiry date | Dec 12, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0233
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A charging roller comprises a shaft member, a base layer located outside in the radial direction of the shaft member, and a surface layer located outside in the radial direction of the base layer and forming a surface. The surface layer includes particles, and the ratio of the total area of the particles exposed from the surface of the surface layer in a planar view seen from the radial direction of the charging roller, with respect to the area of the surface of the surface layer is more than 60%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.