Magnetic barrier for gap control in interleaved tape head design
US5811018A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 1996 |
| Grant date | Sep 22, 1998 |
| Priority date | — |
| Expiry date | Jan 31, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/3163
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention discloses an improved structure and method for forming an interleaved magnetic head. In one aspect, an interleaved magnetic head is formed by providing a wafer comprising a first thick magnetic layer extending across read and write segments of the head and patterned to form a first read shield and a first write pole and, in a second step, a second thick magnetic layer is formed across the read and write segments of the head at substantially the same time to provide substantially all of a second read shield and substantially all of a second write pole. A write gap between the write poles may be formed in such a manner as to have a different thickness than the read gap between the read shields. In addition, tight processing control is maintained over the critical read gap thickness.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.