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Browse Prior Art Database

Wear Areas for Read/Write Multi-Track Heads

IP.com Disclosure Number: IPCOM000099418D
Original Publication Date: 1990-Jan-01
Included in the Prior Art Database: 2005-Mar-14
Document File: 2 page(s) / 50K

Publishing Venue

IBM

Related People

Daughenbaugh, GA: AUTHOR [+2]

Abstract

High wear rate conditions at the edge tracks of magnetic heads can be reduced through the diffusion bonding of a low-wear material to the magnetic ferrite at the tape edge region.

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This is the abbreviated version, containing approximately 100% of the total text.

Wear Areas for Read/Write Multi-Track Heads

       High wear rate conditions at the edge tracks of magnetic
heads can be reduced through the diffusion bonding of a low-wear
material to the magnetic ferrite at the tape edge region.

      On multi-track heads, the edge tracks wear more than the
average of the central tracks.  The reasons for such wear could be
due to the tape tension gradients, or it may be the inherent property
of the flexible tape media in which the tape under tensile stress
tends to produce higher interface contact pressure at the edges due
to stress boundary conditions.  The higher-than-average wear rates at
and around the edge tracks on a read-write head can be decreased by
using relatively harder, more wear resistant material in the locale
of the edge tracks.  The magnetic ferrite can be Ni-Zn, for instance,
and a low wear material could be, ZrO2-Al203, 2CaO-Al2O3-SiO2,
MgO-NiO-ZrO2 or Al2O3-TiO2 .

      The non-magnetic ferrite could be diffusion bonded to the
magnetic ferrite using the process disclosed in U.S. Patent
4,406,722.