Browse Prior Art Database

Functionally Lubed Disks

IP.com Disclosure Number: IPCOM000108169D
Original Publication Date: 1992-Apr-01
Included in the Prior Art Database: 2005-Mar-22
Document File: 1 page(s) / 74K

Publishing Venue

IBM

Related People

Bowen, AJ: AUTHOR [+2]

Abstract

Described is a method of lubricating magnetic recording disk surfaces at different lube aerial densities depending on the expected usage patterns within the surface. A data zone where heads only fly is lubed at a higher density than a landing zone where heads rest and stick.

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Functionally Lubed Disks

      Described is a method of lubricating magnetic recording disk
surfaces at different lube aerial densities depending on the expected
usage patterns within the surface.  A data zone where heads only fly
is lubed at a higher density than a landing zone where heads rest and
stick.

      In files where the heads do not land in a data zone, the data
zone lube density is set at high levels 1 to optimize flyability life
(see the figure).  This lube density is greater than what is needed
to prevent stiction if the heads were permitted to land on data.  For
just the inner diameter landing zone 2, the lube density is reduced
to prevent stiction.  The resulting lube pattern on the disk is a
"step" increase 3 in lube densities.  On the average, there is more
lube on each surface.

      Disclosed anonymously.