Double-gap magnetoresistive head having an elongated central write/shield pole completely shielding the magnetoresistive sensor strip in the read gap
US4803580A · kind A · utility
81Cited by
4References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 17, 1987 |
| Grant date | Feb 7, 1989 |
| Priority date | — |
| Expiry date | Feb 17, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/3903
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetoresistive head having separate write and read gaps including a leading write pole, a trailing write/shield pole, and a following shield pole, wherein an elongated magnetoresistive sensor strip having a central sense region is mounted in the read gap, and further wherein the leading write pole has a length corresponding to the central sense region of the sensor and defines a track width, and the trailing/shield pole and following shield are the same length as the overall length of the magnetoresistive sensor strip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.