Magnetic recording and reproducing system with composite magnetic head
US4731683A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 19, 1985 |
| Grant date | Mar 15, 1988 |
| Priority date | — |
| Expiry date | Apr 19, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/1274
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention discloses a magnetic recording and reproducing system using a composite magnetic head whose surface facing a magnetic recording medium is composed primarily of a ferromagnetic metal and a high permeability ferrite single crystal, and which has a region close to a gap and composed of the ferromagnetic metal, wherein the composite magnetic head is arranged in such a fashion that the {110} plane of the high permeability ferrite single crystal is made to substantially coincide with a plane forming a principal magnetic circuit of the composite magnetic head, that the <100> direction lying inside the {110} plane is inclined at an angle of from 15.degree. to 75.degree. with respect to a direction perpendicular to the surface facing the magnetic recording medium, and that the magnetic recording medium travels in a direction which is relatively the same as, and parallel to, a vector formed by projecting a vector extending from the inside to the outside of the surface facing the magnetic recording medium in the <100> direction, on the surface facing the magnetic recording medium. This magnetic recording and reproducing system can remarkably reduce the step occurring on the surf…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.