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Azimuth and Position Detection Method for a Magnetic Read/Write Head

IP.com Disclosure Number: IPCOM000047724D
Original Publication Date: 1983-Dec-01
Included in the Prior Art Database: 2005-Feb-08

Publishing Venue

IBM

Related People

Authors:
Baasch, HJ Bowen, AJ Estry, RH Taylor, NB [+details]

Abstract

In flexible file diskette drives there are three critical axes along or around which the magnetic transducing gap must be aligned. These are: 1. Along a radial axis through the center of rotation of the diskette (radial alignment). 2. Along the axis perpendicular to the radial axis and parallel to the plane of diskette rotation (tangential alignment). 3. Rotationally around an axis mutually perpendicular to the radial and tangential axes (azimuthal alignment). The method developed to detect each of the above alignment modes is to write, on a slightly modified diskette, a precise set of magnetic patterns which, when read back by a head to be aligned, produce error signals proportional to the degree of misalignment. Fig. 1 is a schematic representation of the pattern written on the diskette.