Perpendicular magnetic recording head with a magnetic shield to reduce side reading
US6738233B2 · kind B2 · utility
12Cited by
7References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2001 |
| Grant date | May 18, 2004 |
| Priority date | — |
| Expiry date | Sep 11, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S977/934
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A read head for perpendicular magnetic recording that reduces side reading. The read head includes a read element and a magnetic shield spaced apart from the read element. The magnetic shield at least partially surrounds the read element at an air-bearing surface of the read element. The ratio of an air-bearing surface area of the magnetic shield to an air-bearing surface area of the read element is from about 1:1 to about 40:1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.