Magnetic head having reinforcing block
US4926276A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 11, 1988 |
| Grant date | May 15, 1990 |
| Priority date | — |
| Expiry date | Feb 11, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/1878
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic head is disclosed. The magnetic head has a block which is formed of a first magnetic material in which a groove for a winding is formed, a first magnetic film which is deposited on a surface of the block in which the groove is formed and is formed of a second magnetic material having a higher saturation magnetic flux density than that of the first magnetic material, a nonmagnetic film which is formed on the first magnetic film and serves as a magnetic gap, a second magnetic film which is deposited on the nonmagnetic film and is formed of the second magnetic material, and a reinforcing block. A portion of the reinforcing block on the side of a magnetic recording medium slide surface is formed of a nonmagnetic material, and the other portion is formed of a magnetic material. A magnetic material-side boundary portion between the nonmagnetic and magnetic materials is inclined to form an acute angle with the nonmagnetic film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.