Method and apparatus for discharging a conductive brush cleaning assembly for a transfer roller
US7245848B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 23, 2005 |
| Grant date | Jul 17, 2007 |
| Priority date | — |
| Expiry date | Oct 17, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/168
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electrophotographic machine includes a dielectric member configured for carrying a toner image. A transfer roller engages the dielectric member and transfers the toner image to an image substrate. A transfer roller power supply biases and periodically reverse biases the transfer roller. A transfer roller cleaning brush having conductive bristles engages the transfer roller. An electrically conductive brush housing encloses the transfer roller cleaning brush and defines an opening through which the bristles contact the transfer roller. The brush housing is electrically charged to the same electrical potential as said transfer roller and is selectively discharged.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.