Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
Magnetic head, head assembly and magnetic recording/reproducing apparatus
The present invention relates to a magnetic head, a head assembly, and a magnetic recording/reproducing apparatus which are capable of effectively detecting thermal asperity. The magnetic head according to the present invention includes a heat-generating resistor, a recording coil, and a resistive element. The heat-generating resistor is adapted to generate heat when power is fed thereto so that the heat generation causes at least a part of the air bearing surface to thermally expand and protrude. The recording coil is adapted to generate a recording magnetic field, and the resistive element is disposed closer to the air bearing surface than the recording coil and connected in series or in parallel with the heater. Thus, the resistive element can share a common wiring with the heater for power feeding, which eliminates the waste of wiring and achieves miniaturization.
TDK Corporation
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Yosuke Katsuki Takeo Masashi Taro
Antoku Kurihara Kagami Sano Oike