| 摘要 |
By the method of measuring a gap depth of a thin film magnetic head for horizontal magnetic recording, the gap depth of a write-magnetic pole can be easily and correctly measured. The method comprises the steps of: forming a first standard marker; measuring a distance between an actual position of a rear end of a lapping guide and the position of the first standard marker; calculating a lapping guide shift length; forming a second standard marker; measuring a distance between an actual position of a zero throat and a position of the second standard marker; calculating a zero throat shift length; and calculating an actual gap depth of a write-magnetic pole by adding the lapping guide shift length and the zero throat shift length to a designed gap depth.
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