Browse Prior Art Database

Increasing Volumetric Efficiency through Skew

IP.com Disclosure Number: IPCOM000115915D
Original Publication Date: 1995-Jul-01
Included in the Prior Art Database: 2005-Mar-30
Document File: 2 page(s) / 43K

Publishing Venue

IBM

Related People

Glaess, DF: AUTHOR

Abstract

A means of increasing the volumetric efficiency of a magnetic recording hard disk file is disclosed.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 84% of the total text.

Increasing Volumetric Efficiency through Skew

      A means of increasing the volumetric efficiency of a magnetic
recording hard disk file is disclosed.

      The air bearing that separates the slider from the rotating
disk in a magnetic recording disk drive is generated by the disk
rotating under the taper-flat bearing surface of the slider that
contains the magnetic recording element.  The leading part of the
bearing, where the air first enters under the slider, is of primary
importance for generating the separation between the slider and the
disk.  Alignment of the slider so the leading edge of the air-bearing
is away from the outside edge of the disk allows separation to be
maintained between the slider and the disk even when the trailing
edge of the slider flies very near the edge of the disk.  This allows
the slider to fly farther out over the edge of the disk than a slider
that is aligned tangent to a circumference of the disk.  Since more
of
the disk is usable, the volumetric efficiency of the file is
increased.

      Alignment of the slider so the leading edge of the air-bearing
is away from the outside edge of the disk is accomplished by skewing
the slider to the track that it is flying on.  The head is at an
angle to the disk at its outermost radius of travel with the leading
edge of the air-bearing at a smaller radius than the trailing edge of
the air-bearing (Figure).

      Alignment of the slider relative to the disk may be
accomplished...