Browse Prior Art Database

Anti-Stiction Disk Surface Features

IP.com Disclosure Number: IPCOM000119445D
Original Publication Date: 1991-Jan-01
Included in the Prior Art Database: 2005-Apr-01
Document File: 1 page(s) / 35K

Publishing Venue

IBM

Related People

Berg, LJ: AUTHOR [+2]

Abstract

Mechanical modification of a disk surface in the start/stop zone to inhibit the sticking of heads to disks can be achieved by depositing a pattern of raised surface features on the disk. Proper patterning and height of these surface features will lead to a reduction or elimination of the stiction forces between the head and disk.

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Anti-Stiction Disk Surface Features

      Mechanical modification of a disk surface in the start/stop
zone to inhibit the sticking of heads to disks can be achieved by
depositing a pattern of raised surface features on the disk.  Proper
patterning and height of these surface features will lead to a
reduction or elimination of the stiction forces between the head and
disk.

      A system of disk surface modification which can controllably
and routinely give relatively large surface features in the
start/stop zone reduces the stiction forces between the disk and the
head.  Such mechanical modification of a disk surface can be achieved
by depositing (e.g., by plating) a pattern of raised surface features
on the disk. Proper patterning and height of these surface features
will lead to reduction or elimination of the stiction forces between
the disk and head.

      Placing a regular pattern of these anti-stiction surface
features in the start/stop zone would provide a way to separate most
of the head air bearing surfaces from the disk when the file is not
running.  The height of the anti-stiction surface features could be
much larger than surface roughness features currently used to control
stiction.  Further, the control over the patterning of the new
features could allow for better repeatability of the surface features
in the start/stop zone.

      Disclosed anonymously.