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Degausser for Magnetic Recording Media

IP.com Disclosure Number: IPCOM000059855D
Original Publication Date: 1986-Jan-01
Included in the Prior Art Database: 2005-Mar-08

Publishing Venue

IBM

Related People

Authors:
Beach, LR Haynes, MK Kalthoff, CH [+details]

Abstract

When manufacturing high performance magnetic tape it is necessary to orient the magnetic particles in the tape in the direction of the recording signals to be subsequently used to record data on the tape. The saturated, unidirectional field created by this orientation can cause problems where subsequent testing and recording heads only penetrate the upper portion of the magnetic coating, leaving the under portion of the coating fully saturated and thereby creating magnetic noise. This problem can be overcome by demagnetizing or degaussing the tape before testing