Developing device and image-forming apparatus provided therewith
US8346137B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 3, 2010 |
| Grant date | Jan 1, 2013 |
| Priority date | — |
| Expiry date | Feb 22, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0942
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A developing device includes a developing container for accommodating a two-component developer; a developer bearing member for bearing and conveying the developer, a fixed magnet including a release pole for releasing the developer from the developer bearing member, being fixed to the inside of the developer bearing member; and a backflow prevention member that is a sheet-shaped member disposed along the entire length in the longitudinal direction of the developer bearing member so as to be upstream in the direction of rotation of the developer bearing member as viewed from the release pole, the backflow prevention member being disposed so that a proximal end portion thereof is fixed to an inside surface of the developing container, and a distal end portion thereof is in contact with or adjacent to the developer bearing member and facing downstream in the direction of rotation of the developer bearing member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.