Process cartridge and image forming apparatus
US7283766B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 18, 2006 |
| Grant date | Oct 16, 2007 |
| Priority date | — |
| Expiry date | Aug 18, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2221/1612
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A process cartridge detachably mountable to an electrophotographic image forming apparatus main assembly forms an image on recording material. The cartridge is transportable with the apparatus while being set therein. The cartridge includes a frame, an electrophotographic photosensitive drum, a process device actable on the drum, a shutter movable between an exposing and protecting positions for respectively opening an opening provided in the frame to expose the drum, and closing the opening to protect the drum, and a protecting member interposable between the drum and a transfer roller, provided in the main assembly, for transferring a toner image onto the recording material, upon transportation of the cartridge set in the main assembly together with the main assembly. The protecting member mounts on the frame to cover the shutter. The shutter is movable from the protecting to the exposing positions in interrelation with mounting the cartridge to the main assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.