Charging device and image formation apparatus
US12105437B2 · kind B2 · utility
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1References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 17, 2023 |
| Grant date | Oct 1, 2024 |
| Priority date | — |
| Expiry date | Jul 17, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0258
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A charging device according to one or more embodiments may include: a charging member that is rotatable and provided to be in contact with a contact member. The charging member includes: a shaft; a surface layer to be in contact with the contact member and containing porous particles; and an elastic layer provided between the shaft and the surface layer. A ratio of convex portions formed by the porous particles on the surface layer to a surface area of the surface layer is 68.4% or more.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.