Charging roller and image forming apparatus
US12117740B2 · kind B2 · utility
0Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 11, 2019 |
| Grant date | Oct 15, 2024 |
| Priority date | — |
| Expiry date | Apr 8, 2041 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2370/38
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Provided is a charging roller that can achieve excellent image quality and prevent detachment of particles in its surface layer. A charging roller 1 comprises a shaft 2 and, on an outer circumferential side of the shaft 2, at least a base layer 3 and a surface layer 4, wherein the surface layer 4 contains a binder resin 41 and particles 42, and the particles 42 contain 50 mass % or more of a same component A as at least one selected from components constituting the binder resin 41, and a content of the particles in the surface layer is 30 parts to 120 parts by mass with respect to 100 parts by mass of the binder resin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.