Developing roller having developing sleeve including portions with different transportation capacities
US6640076B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 3, 2001 |
| Grant date | Oct 28, 2003 |
| Priority date | — |
| Expiry date | Dec 3, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0928
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A developing roller system used in a developing device. A magnet roller includes a plurality of magnets configured to attract the developer. A developing sleeve is provided outside of the magnet roller and configured to carry and convey a developer while bearing the developer by a magnetic force of the magnet roller. The surface of the developing sleeve is configured such that a transportation capacity of the developer in end portions of the developing sleeve which correspond to a vicinity of ends of the magnet roller is smaller than the transportation capacity of the developer in a central portion of the developing sleeve which corresponds to a central portion of the magnet roller. The developer includes a two-component developer having a toner and a carrier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.