Developing roller provided with a shaft with an axial middle portion having a small outer diameter and axial end portions having large outer diameters and a developing device provided with the same
US9625853B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 25, 2014 |
| Grant date | Apr 18, 2017 |
| Priority date | — |
| Expiry date | Mar 25, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0818
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A developing roller configured to carry developer and extending in an axial direction includes: a hollow cylindrical rubber portion; and a shaft. The hollow cylindrical rubber portion has axial end faces. The shaft extends through the hollow cylindrical rubber portion and has a shaft portion positioned inward of the axial end faces of the hollow cylindrical rubber portion in the axial direction. The shaft portion has an axially middle portion and axial end portions positioned outward of the axially middle portion in the axial direction. The axially middle portion has an outer diameter smaller than that of each of the axial end portions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.