Recording and reproducing separation type magnetic head having thin part in upper core or magnetic film and magnetic storage apparatus using the same
US6700737B1 · kind B1 · utility
0Cited by
6References
2Claims
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Key dates
| Filing date | Aug 3, 1999 |
| Grant date | Mar 2, 2004 |
| Priority date | — |
| Expiry date | Aug 3, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/3967
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A recording and reproducing separation type magnetic head has a recording head with an upper core and a lower core that writes information on a magnetic disk and a reproducing head with an upper magnetic film and a lower magnetic film, as sealed layers, that reads the information from the magnetic disk. A thickness of the upper part of the upper core is less than a thickness of the tip minute of the upper core. The magnetic head has excellent overwriting performance and achieves high speed transfer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.