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Plasma System for Recovery of Disk Substrates

IP.com Disclosure Number: IPCOM000040859D
Original Publication Date: 1987-Feb-01
Included in the Prior Art Database: 2005-Feb-02
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Walker, AC: AUTHOR

Abstract

A plasma surface recovery system is a surface-sensitive process for removing the iron-oxide coating from aluminum disk substrates. The epoxy-resin bond in the iron-oxide coating is degraded in an oxygen-Freon plasma, leaving a mineral residue. The residue is then removed by high pressure water cleaning. Substrates are then inspected for surface damage. Reclaimable substrates are lightly machined as required to meet surface profile requirements and re-used in new recording disks.

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Plasma System for Recovery of Disk Substrates

A plasma surface recovery system is a surface-sensitive process for removing the iron-oxide coating from aluminum disk substrates. The epoxy-resin bond in the iron-oxide coating is degraded in an oxygen-Freon plasma, leaving a mineral residue. The residue is then removed by high pressure water cleaning. Substrates are then inspected for surface damage. Reclaimable substrates are lightly machined as required to meet surface profile requirements and re-used in new recording disks.

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