Apparatus for developing electrostatic latent images
US4800412A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 20, 1986 |
| Grant date | Jan 24, 1989 |
| Priority date | — |
| Expiry date | Mar 20, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0822
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electrostatic latent image developing apparatus which has a developing sleeve drivingly rotatable for transporting a developer, a magnetic roller fixedly positioned within the developing sleeve and having a plurality of N and S poles wherein one of said poles includes auxiliary poles of a weaker magnetic force, a bristle height restricting plate and apparatus for supplying the developer. Said auxiliary poles have the same polarity and are provided at one side of the sleeve opposite to the developing side thereof. Said bristle height restricting plate is provided between one of the auxiliary poles located downstream with respect to the direction of transport of the developer and the pole adjacent to the downstream auxiliary pole in the rotating direction of the developing sleeve. By using this apparatus, developer after being used for developing is smoothly mixed and stirred with a newly supplied developer at the upstream side of said bristle height restricting plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.