Patent · US Expired

Method for lowering the frictional coefficient of the magnetic head-disk interface in a lubricated magnetic disk storage system

US4692832A · kind A · utility

27Cited by

3References

5Claims

0Family size

Assignee

International Business Machines Corporation · US

Inventors

Upali Bandara · Leimen, DE
Holger Hinkel · Böblingen, DE

Key dates

Filing date	Jul 7, 1986
Grant date	Sep 8, 1987
Priority date	—
Expiry date	Jul 7, 2006

Classification

Technology area (CPC G)Physics
CPC primaryG11B23/507
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

The frictional coefficient and triboelectric current that exist between the magnetic-head carrying slider and the surface of a magnetic disk when both are in sliding contact are reduced by an appropriate pre-conditioning. The pre-conditioning comprises running the head-disk assembly for at least several minutes at a low velocity of, e.g. 200 to 400 rpm, in a dry gas atmosphere. By this pre-conditioning the lifetime of lubricated head-disk assemblies is increased.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.