Magnetoresistance effect for short and long wavelength recordings
US4757410A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 1985 |
| Grant date | Jul 12, 1988 |
| Priority date | — |
| Expiry date | Oct 30, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/488
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A multi-channel magnetoresistance effect type magnetic head has a short wavelength region magnetic head element and a relatively longer wavelength region magnetic head element. The two head elements are provided on a magnetic substrate with each having a magnetic circuit containing a magnetic gap facing a surface adjacent to and across from a magnetic recording medium. Each magnetic circuit has a discontinuity portion with a bridging magnetoresistance effect sensing element to magnetically connect the discontinuity portion. The longer wavelength magnetic head discontinuity portion is spaced at a greater distance from the adjacent surface than is the discontinuity portion of the shorter wavelength magnetic head element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.