Magnetic brush developing device for developing electrostatic latent images
US4177757A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1977 |
| Grant date | Dec 11, 1979 |
| Priority date | — |
| Expiry date | Dec 22, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/09
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In a device for developing electrostatic images with developer mix including magnetic carrier particles and triboelectrically charged toner particles which comprises a container for the developer mix, magnetic field producing means and an applicator enclosing the magnetic field producing means, a magnetic brush forming means is provided in the container for applying toner particles substantially uniformly to a surface to be developed, and a toner powder-cloud forming means is provided in spaced apart relationship with the magnetic brush forming means for applying toner particles to the same surface by the use of the edge effect of the toner powder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.