Device for reproducing the recorded content of a magnetic card
US4193099A · kind A · utility
3Cited by
5References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 4, 1977 |
| Grant date | Mar 11, 1980 |
| Priority date | — |
| Expiry date | Apr 4, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/865
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The recorded content of a magnetic card is transferred directly to a magnetic tape simply by bringing the magnetic card into contact with the magnetic tape and applying a magnetic field to the contacting area with the aid of a copy magnet or a magnetic printing head energized by D. C. current or A. C. current, on the condition that the coercive force of magnetic material on the card is larger than that on the tape, and a reproducing head mounted along the path of the tape reproduces the transferred content. Thus, the recorded content of a magnetic card can be reproduced many times just by engaging the card in the device once.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.