Magnetic head with specific gap structure
US4953048A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 17, 1989 |
| Grant date | Aug 28, 1990 |
| Priority date | — |
| Expiry date | May 17, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/127
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic head including pair of core halves joined opposite to each other, each core half including a first magnetic material on which is deposited a magnetic film of a second magnetic material having a high saturation magnetic flux density and a low magnetic permeability compared with the first magnetic material, both the magnetic films having a magnetic gap arranged therebeteween, includes a pair of nonmagnetic members, each of which is adjacent to each end of the magnetic gap, in a surface of the head, along which a recording medium slides, wherein each of the magnetic films extends along the outer edge of the nonmagnetic member adjacent to one of the core halves, and the boundary between the first magnetic material and the second magnetic material includes a portion extending outward and a portion extending parallel to the magnetic gap and out of alignment with the first-mentioned portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.