Developing device including magnetic member provided on toner-scattering restraining device and image forming apparatus including the developing device
US6856774B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 26, 2002 |
| Grant date | Feb 15, 2005 |
| Priority date | — |
| Expiry date | Dec 5, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0942
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A developing device developing a latent image on a latent image carrier with a developer, and including a casing having an opening facing the latent image carrier and a developer carrier. Also included is a magnetic field generating device including a first magnetic pole generating a magnetic field causing the developer to rise on the developer carrier in a form of a magnet brush in a developing region, and a second magnetic pole generating a magnetic field at a downstream side of the first magnetic pole in a rotating direction of the developer carrier. Further, a toner-scattering restraining device is provided on an end portion of the casing at the downstream side of the developing region, and a magnetic member provided on a side of the toner-scattering restraining device facing the latent image carrier. A peak of a magnetic flux density set by the second magnetic pole in its normal direction is located outside of the opening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.