Magnetic disk unit utilizing a predetermined range for the frictional coefficient between the magnetic head and the recording medium
US5130867A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 8, 1990 |
| Grant date | Jul 14, 1992 |
| Priority date | — |
| Expiry date | Jun 8, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/6005
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic disk unit has a magnetic head and a magnetic recording medium. The magnetic head records and retrieves information to and from the magnetic recording medium. In the magnetic disk unit the magnetic head and magnetic recording medium move relative to each other; and a device sets the frictional coefficient of the magnetic head and magnetic recording medium within an intermediate range extending from a minimum frictional coefficient point to a point where the durability of the magnetic head and the magnetic recording medium is not adversely affected. The range is determined, on a Stribeck diagram which indicates the relation of a relative velocity to a frictional coefficient of the magnetic head and magnetic recording medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.