Core assembly for magnetizing columnar permanent magnet for use in an electrostatic developing apparatus
US4168481A · kind A · utility
9Cited by
5References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 5, 1977 |
| Grant date | Sep 18, 1979 |
| Priority date | — |
| Expiry date | Oct 5, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F13/003
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A core assembly for magnetizing a columnar permanent magnet, especially a columnar ceramic permanent magnet, 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.