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Magnetic head measuring apparatus and measuring method applied to the same apparatus

  • US 20020130658A1
  • Filed: 02/05/2002
  • Published: 09/19/2002
  • Est. Priority Date: 02/05/2001
  • Status: Active Grant
First Claim
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1. A magnetic head measuring apparatus for executing measurement with respect to at least one measurement point on a recording head, comprising:

  • a probe having a magnetic substance;

    a vibrator configured to vibrate said probe above the at least one measurement point;

    a first signal generator configured to supply a drive signal to said vibrator;

    a second signal generator configured to supply a current containing a direct current (DC) and an alternate current (AC) to the recording head to generate a magnetic field from the recording head;

    a detector configured to detect a signal corresponding to a force interaction that acts on said probe due to the magnetic field generated from the recording head in accordance with the current supplied by said second signal generator; and

    a measurement unit configured to measure current dependence of the magnetic field of the recording head from the signal detected by said detector.

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