Method for specifying control value for controlling clearance adjustment amount, disk drive device and manufacturing method thereof

The invention helps to reduce damage of a head element portion or a magnetic disk in a procedure for specifying a heater power value for adjusting a clearance between the head element portion and the magnetic disk. In an embodiment of the present invention, an HDC/MPU 23 sequentially performs data w...

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Bibliographic Details
Main Authors ITO TAKUMA, ETOH MASAHIRO, SHIMADA MINORU, KAWAMOTO YASUNORI
Format Patent
LanguageChinese
English
Published 02.02.2011
Subjects
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
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Summary:The invention helps to reduce damage of a head element portion or a magnetic disk in a procedure for specifying a heater power value for adjusting a clearance between the head element portion and the magnetic disk. In an embodiment of the present invention, an HDC/MPU 23 sequentially performs data writing and reading while increasing heater power. The HDC/MPU 23 further determines whether or not a head slider 12 has retrieved the data properly. When the data cannot be retrieved properly, the HDC/MPU 23 specifies a heater power value in a normal operation based on the heater power value at which the data could not be retrieved properly.
Bibliography:Application Number: CN2008183647