Charging device for electrophotography
US6272303A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 27, 2000 |
| Grant date | Aug 7, 2001 |
| Priority date | — |
| Expiry date | Jun 27, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0216
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A charging device for electrophotography includes a charging brush, having many fibers extending in radial around a rotation shaft and contacted with a surface of a photosensitive drum, for rotating to electrically charge the surface of the photosensitive drum with the fibers, and a charging control member located on a downstream side of a contact between the charging brush and the photosensitive drum in a rotation direction of the charging brush for temporarily retarding a movement of the fibers of the charging brush to increase an effective density of the fibers to be contacted with the surface of the photosensitive drum. Particularly, an end of the charging control member is at a distance of at least 1 mm from the contact between the charging brush and the photosensitive drum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.