Developing roll for use in electrostatic developing apparatus employing magnetic particles
US4266328A · kind A · utility
8Cited by
6References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 10, 1979 |
| Grant date | May 12, 1981 |
| Priority date | — |
| Expiry date | May 10, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0921
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A core assembly for magnetizing a columnar permanent magnet, especially a columnar ceramic permanent magnet and a developing roll magnetized by the core assembly, adapted for use in an electrostatic developing apparatus of magnetic-brush developing type. The magnetizing iron core assembly has a specific arrangement of magnetic poles and magnetizing coil windings for providing a specific pattern of magnetic flux distribution which would provide the most efficient development.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.