Process cartridge and electrophotographic image forming apparatus having an improved driving system
US6006058A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 1997 |
| Grant date | Dec 21, 1999 |
| Priority date | — |
| Expiry date | Sep 26, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2221/1657
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, wherein the main assembly includes a motor, a main assembly side gear for receiving driving force from the motor and a non-twisted recess which is substantially coaxial with the gear, the process cartridge includes an electrophotographic photosensitive drum; a process device actable on the photosensitive drum; and a non-twisted projection engageable with the recess, the projection being provided at a longitudinal end of the photosensitive drum, wherein when the main assembly side gear rotates with the recess and projection engaged with each other, rotational driving force is transmitted from the gear to the photosensitive drum through engagement between the recess and the projection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.