Process cartridge and image forming apparatus
US7155140B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2005 |
| Grant date | Dec 26, 2006 |
| Priority date | — |
| Expiry date | Mar 20, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2221/1612
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus for forming an image on a recording material, the process cartridge being transportable with the electrophotographic image forming apparatus while being set in the electrophotographic image forming apparatus, the process cartridge including a frame; an electrophotographic photosensitive drum; process means actable on the photosensitive drum; a protection shutter movable between an exposing position for opening an opening provided in the frame to expose the photosensitive drum, and a protecting position for closing the opening to protect the photosensitive drum; and a protecting member for interposing between the photosensitive drum and a transfer roller, provided in the main assembly, for transferring a toner image onto the recording material, upon transportation of the process cartridge set in the main assembly together with the main assembly, wherein the protecting member is mounted on the frame to cover the protection shutter such that protection shutter is movable from the protecting position to the exposing position in interrelation with mounting of the process cartrid…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.