Magnetic recording reproducing apparatus with field generating means within the copy medium
US4110797A · kind A · utility
15Cited by
4References
10Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Apr 19, 1977 |
| Grant date | Aug 29, 1978 |
| Priority date | — |
| Expiry date | Apr 19, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B27/007
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Informations recorded in a master medium are first magnetically transferred to a temporary copy medium. The transferred informations are repeatedly reproduced with at least one reproducing magnetic head. The feature of the invention resides in the magnetic transfer means wherein the magnetic transfer field is generated from mechanically rotating or oscillating permanent magnet means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.