ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS TO WHICH A PROCESS CARTRIDGE IS DETACHABLY MOUNTABLE AND PROCESS CARTRIDGE HAVING A SUPPORTING MEMBER FOR ROTATABLY SUPPORTING A DEVELOPING ROLLER AT A POSITION AWAY FROM THE CENTER OF ROTATION THEREOF
US6577831B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2000 |
| Grant date | Jun 10, 2003 |
| Priority date | — |
| Expiry date | Mar 29, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2221/1633
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus includes an electrophotographic photosensitive drum, a developing roller for developing an electrostatic latent image formed on the electrophotographic photosensitive drum with a developer, a frame for rotatably supporting the electrophotographic photosensitive drum, a developing blade, provided in the frame, for regulating the amount of the developer applied on a peripheral surface of the developing roller, a supporting member, journaled in the frame for rotation about a center of rotation, for rotatably supporting the developing roller at a position away from the center of rotation thereof, and an urging member for elastically urging the supporting member to urge the developing roller toward the electrophotographic photosensitive drum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.