Developing device
US4030447A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 1975 |
| Grant date | Jun 21, 1977 |
| Priority date | — |
| Expiry date | Oct 7, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0636
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
This specification discloses a device for developing electrostatic latent images by the use of developer. The device includes a photosensitive medium bearing electrostatic latent images on the surface thereof to be developed, a container for containing therein magnetic carrier and toner, a permanent magnet fixedly mounted within the container, and a non-magnetic sleeve enclosing the magnet and rotatably mounted in the container for transporting the developer from the container to the latent image bearing surface. The permanent magnet has poles of identical polarity disposed adjacent to each other at positions opposed to the latent image bearing surface. Thus, development can be effected in the developing station by utilization of repelling magnetic fields produced by the poles of identical polarity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.