Monitoring element for a magnetic recording head and method of manufacturing a magnetic recording head
AssigneeFujitsu Limited
InventorMutsuo Yoshinami
Life of this patent
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Abstract
A monitoring element for a magnetic recording head makes it possible to know the form of a magnetic pole of the magnetic recording head without destroying the element. The monitoring element for a magnetic recording head is formed on a workpiece for magnetic recording heads on which element magnetic poles of the magnetic recording heads are formed. The monitoring element includes a monitoring magnetic pole formed of a same material and in a same form as the element magnetic poles and monitoring terminals that are electrically connected to the monitoring magnetic pole.
Claims13
A monitoring element for a magnetic recording head that is formed on a workpiece for magnetic recording heads on which element magnetic poles of the magnetic recording head are formed, the monitoring element comprising:
- a monitoring magnetic pole formed of a same material and in a same form as the element magnetic poles;
- and
- monitoring terminals that are electrically connected to the monitoring magnetic pole.
A method of manufacturing a magnetic recording head formed with an air bearing surface including a cross-section of a magnetic pole that has been subjected to a grinding process after formation of the magnetic pole, the method comprising:
- a step of measuring a resistance of the magnetic pole before the grinding process;
- a step of measuring a width of an upper edge of the magnetic pole;
- and
- a step of calculating a cross-sectional form using the width of the upper edge and the resistance of the magnetic pole.
A method of measuring the form of a magnetic pole of a magnetic recording head, the method comprising:
- a step of measuring a resistance of the magnetic pole;
- a step of measuring a width of an upper edge of the magnetic pole;
- and
- a step of calculating a cross-sectional form using the width of the upper edge and the resistance of the magnetic pole.
Dependencies are inferred from the claim text.