Electrophotographic photosensitive drum, process cartridge, and electrophotographic image forming apparatus
US7003247B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 8, 2004 |
| Grant date | Feb 21, 2006 |
| Priority date | — |
| Expiry date | Oct 8, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2221/1657
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electrophotographic photosensitive drum includes a non-circular twisted projection, provided at one longitudinal end of the drum, having a cross-section with a plurality of corner portions, and being engageable with a non-circular twisted hole located at a central portion of a driving rotatable member of a main assembly of an image forming apparatus and has a cross-section with a plurality of corner portions; and a second electroconductive member contactable with a first electroconductive member electrically connected with the main assembly of the image forming apparatus. The first electroconductive member is disposed in the hole to ground the drum. The second electroconductive member is provided on the projection and electrically connected with the drum. The contact position between the first and second electroconductive members moves in interrelation with the projection being retracted toward the hole by rotation of the driving rotatable member when the projection is engaged with the hole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.