Developing apparatus and image forming apparatus
US5758240A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 15, 1996 |
| Grant date | May 26, 1998 |
| Priority date | — |
| Expiry date | Oct 15, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/09
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A developing apparatus according to the present invention comprises a rotating developing sleeve, a developer supplying portion for supplying developer to the surface of the developing sleeve, a developer collecting portion for collecting the developer from the surface of the developing sleeve, the developer collecting portion and the developer supplying portion being vertically aligned, a pair of magnetic poles fixed in the developing sleeve, the pair of magnetic poles forming a triangle area which is surrounded by tangent lines at points where the magnetic poles have the maximum magnetic force, and a wall positioned between the developer supplying portion and the developer collecting portion, the edge of the wall being positioned in the triangle area formed by the pair of magnetic poles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.