Magnetic recording and reproducing apparatus and a magnetic head used for the apparatus
US4939604A · kind A · utility
13Cited by
2References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 23, 1989 |
| Grant date | Jul 3, 1990 |
| Priority date | — |
| Expiry date | Mar 23, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/82
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic head comprises a slider which holds recording/writing elements at its medium opposing surface constituting a lifting force generating part and the surface area of the medium opposing surface is at most 2 mm.sup.2. A magnetic recording and reproducing apparatus has such magnetic head which is disposed on a magnetic disk having a magnetic recording layer formed on a rigid substrate while the disk is rotated at a high speed so that magnetic recording and reproducing are conducted between the magnetic head and the magnetic disk, wherein the surface roughness R.sub.max of the magnetic disk is at most 100 .ANG..
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.