Magnetic head measuring apparatus and measuring method applied to the same apparatus
First Claim
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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Accused Products
Abstract
A magnetic head measuring apparatus executes measurement with respect to at least one measurement point on a recording head. The apparatus includes a probe having a magnetic substance, a vibrator which vibrates the probe above the at least one measurement point, a first signal generator which supplies a drive signal to the vibrator, a second signal generator which supplies a current containing a direct current and an alternate current 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 the probe due to the magnetic field generated from the recording head in accordance with the current supplied by the second signal generator, and a measurement unit which measures current dependence of the magnetic field of the recording head from the signal detected by the detector.
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Citations
16 Claims
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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:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A measuring method applied to a magnetic head measuring apparatus for executing measurement with respect to at least one measurement point on a recording head, said method comprising:
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supplying 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;
bringing a probe having a magnetic substance close to the recording head while vibrating the probe;
detecting a signal corresponding to a force interaction that acts on the probe due to the magnetic field generated from the recording head; and
measuring current dependence of the magnetic field of the recording head from the detected signal. - View Dependent Claims (12, 13, 14, 15, 16)
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Specification