Toner cartridge with conductive drive hub
US6249659A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 17, 2000 |
| Grant date | Jun 19, 2001 |
| Priority date | — |
| Expiry date | Feb 17, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2221/183
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A toner cartridge for an electrostatic printer or copier includes an electrophotographic drum, a toner container, a fixed electrode for receiving a developing bias voltage, and a developer roller for supplying the toner to an electrostatic latent image on the electrophotographic drum. A drive hub is press fit into an end of the developer roller. The drive hub has a unitary nonconducting plastic body, with a plug portion for elastically and slidably press-contacting the end of the developer roller, an elongated axle portion with an uninterrupted bearing surface, a shoulder portion for supporting a spring, and a longitudinal passage running through the axle and shoulder portions. A wire is disposed in the passage and makes an electrical connection with the spring and the developer roller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.