Developing unit having a magnet member and image forming apparatus including the developing unit
US8185024B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 10, 2009 |
| Grant date | May 22, 2012 |
| Priority date | — |
| Expiry date | Aug 12, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0838
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A developing unit including a retainer receiving portion for receiving a developer retainer, a first agitation portion adjacent to the retainer receiving portion, a second agitation portion adjacent to the first agitation portion, a first conveyance member received in the first agitation portion and conveying a developer in the first agitation portion in a first conveyance direction, a second conveyance member received in the second agitation portion and conveying a developer in the second agitation portion in a second conveyance direction reverse to the first conveyance direction, and a magnetic member disposed between the second conveyance member and the developer retainer and having magnetism.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.