Method of manufacturing an information storage disk drive with variable zone layout and track pitch parameter considerations
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United States of America Patent
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Jul 17, 2001
Grant Date -
N/A
app pub date -
Mar 26, 1997
filing date -
Dec 19, 1994
priority date (Note) -
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Abstract
A method of manufacturing a disk drive which includes a disk having first and second magnetic surfaces and first and second read/write transducers for writing information on and reading information from the magnetic surfaces. The method includes determining a track width performance characteristic to be measured for the read/write transducers, establishing ranges of values for the performance characteristic to define a plurality of performance groups. The performance characteristic is measured for a plurality of read/write transducers from which the first and second read/write transducers for the disk drive are to be selected and the read/write transducers are segregated into groups based on the performance characteristic value falling within the range of the group. The disk drive is assembled using read/write transducers from only one of the groups. The measurement of the performance characteristic is accomplished either electrically or optically.
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