Thin developer layer forming device
US4559899A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 13, 1984 |
| Grant date | Dec 24, 1985 |
| Priority date | — |
| Expiry date | Jul 13, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0942
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A thin developer layer forming device includes a developer supply container, having an opening, for containing a non-magnetic developer and magnetic particles, an endlessly movable developer carrying member of a non-magnetic material for carrying a developer, which is movable between an inside of the developer supply container and an outside of the developer supply container through the opening, rotatable member for generating a magnetic field, disposed in the carrying member, and a magnetic particles confining member, provided outside of the developer carrying member and cooperable with a magnetic pole of the magnetic field generating means to confine the magnetic particles within the developer container, wherein the magnetic field generating member is rotated in the developer carrier to move the magnetic particles in a direction opposite to a direction of movement of the developer carrying member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.