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Browse Prior Art Database

Magnetic Head On-Line Cleaning

IP.com Disclosure Number: IPCOM000046437D
Original Publication Date: 1983-Jul-01
Included in the Prior Art Database: 2005-Feb-07
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Ertingshausen, F: AUTHOR [+3]

Abstract

During the operation of rigid magnetic disks, debris collects at the magnetic heads and sliders. This debris is removed on-line by the head and slider being occasionally moved for a short time to a special wear track. At a disk speed which is lower than that during normal operation, the head/slider arrangement does not fly on an air cushion but slides along the wear track, thus grinding off the debris.

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Magnetic Head On-Line Cleaning

During the operation of rigid magnetic disks, debris collects at the magnetic heads and sliders. This debris is removed on-line by the head and slider being occasionally moved for a short time to a special wear track. At a disk speed which is lower than that during normal operation, the head/slider arrangement does not fly on an air cushion but slides along the wear track, thus grinding off the debris.

The wear track is best arranged outside the magnetic coating of the disk in the region of the inner and/or outer diameter. The surface roughness of the wear track exceeds that of the magnetic coating. The material used, such as Al2O3, is hard and wear-resistant and can be readily generated on an AlMg5 substrate by anodic oxidation. Layers of TiC and TiN are also suitable and can be deposited by chemical vapor deposition processes.

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