Perpendicular recording head having integrated read and write portions
US6621664B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2001 |
| Grant date | Sep 16, 2003 |
| Priority date | — |
| Expiry date | Jul 23, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S977/943
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An integrated read/write perpendicular recording head facilitates the use of magnetic storage media having a high magnetic recording density and high data rates. The use of a perpendicular write portion provides adequate space between the main and opposing poles for a read element and associated electrical contacts therebetween. The use of a differential dual spin valve as a read element eliminates the need for magnetic shielding of the read element. Such a structure permits the read element and main write pole to be close together, thereby minimizing seek time, and permitting rapid transition from read to write operations, and vice versa.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.