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Improving Stiction Performance by Purging HDAs

IP.com Disclosure Number: IPCOM000117112D
Original Publication Date: 1995-Dec-01
Included in the Prior Art Database: 2005-Mar-31
Document File: 2 page(s) / 32K

Publishing Venue

IBM

Related People

Deleo, D: AUTHOR [+5]

Abstract

Prolonged outgassing of gasses or aerosoling of liquids within hard disk files can lead to interface stiction problems. The magnitude of such a problem can be significantly reduced by flushing the air in the file that has been contaminated with the outgas material within the hard disk file enclosure.

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Improving Stiction Performance by Purging HDAs

      Prolonged outgassing of gasses or aerosoling of liquids within
hard disk files can lead to interface stiction problems.  The
magnitude of such a problem can be significantly reduced by flushing
the air in the file that has been contaminated with the outgas
material within the hard disk file enclosure.

      One method is to actively or passively exchange the air
inside the hard disk drives by flushing out air within a hard drive
while the drive is running.  This process results in the removal of
outgassed and/or aerosoled compounds from the motor, actuator,
filters, casing, tapes, etc.  Disk rotation induced pressure can also
be used to flush out air through a purposely made small hole.  A
flapper valve or a patch of filter material may be needed to prevent
contamination depending on the cleanliness of the room where the
files are purged.

      This system has the advantage that it can be used on files that
are currently being produced with very little change to the process
flow.  In addition, it has the ability to be applied equally to files
that have already been sealed.  These files would include the work in
progress that is in the line as well as files that might already be
in the field that are exposed to this problem.