Process cartridge and electrophotographic image forming apparatus
US7088939B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 22, 2004 |
| Grant date | Aug 8, 2006 |
| Priority date | — |
| Expiry date | Jan 11, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2221/001
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, the process cartridge includes an electrophotographic photosensitive drum, a charging member for electrically charging the electrophotographic photosensitive drum, wherein the charging member is supplied with a charging bias voltage received from the main assembly of the electrophotographic image forming apparatus when the process cartridge is mounted to the main assembly of the electrophotographic image forming apparatus; and a charging member rubbing member having an insulative property and provided contacted to the charging member along a longitudinal direction of the charging member; wherein the charging member is contacted within a longitudinally extending range to electrically charge the electrophotographic photosensitive drum, and wherein the charging member rubbing member is disposed between the electroconductive member and the charging member beyond an end of the range to prevent leakage of current from the charging member to the electroconductive member when the charging member is supplied with the charging bias.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.