Magnetic disk apparatus having recording heads for opposite disk surfaces which are offset from each other
US5296980A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 16, 1993 |
| Grant date | Mar 22, 1994 |
| Priority date | — |
| Expiry date | Jul 16, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/73921
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Disclosed is a disk drive having at least one disk. An actuator arm carriers at least two sliders which are positioned over the first and second surface of the disk. The actuator arm moves the sliders to various selected positions over disks so that representations of data can be read from or written into the tracks of the disk. Each slider includes at least one magnetic transducer or magnetic head. The magnetic head is actually passed over the track in the disk during a read or write operation. The heads are shifted slightly with respect to a line perpendicular to the disk surface to minimize or reduce crosstalk and electromagnetic coupling between the heads located on the first and second surface of the disk. In other words, the heads are intentionally misaligned to increase the distance between the two heads and to reduce crosstalk and electromagnetic coupling between the two heads.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.