Patent ID: 7593187

Claim:
A magnetic head comprising a write head which magnetically records information by emitting magnetic flux, which is generated by a write coil composed of a spiral thin-film coil pattern, from a magnetic pole unit to a recording medium; and a read head having a reading element which is disposed in the vicinity of the write head and converts record magnetic flux, which is emitted from the recording medium, to an electric signal; the magnetic head characterized in that, in a write coil facing area facing parallel aspect in which the thin-film coil pattern of the write coil is disposed, a heater coil which causes a medium facing surface to protrude toward a recording medium side by thermal expansion caused by power distribution and overheating is disposed via an insulating layer; and in the heater coil, a wide terminal pattern is disposed outside the write coil facing area, and a heater pattern having a width narrower than the terminal pattern is disposed in the write coil facing area; and the heater coil in the write coil facing area is disposed in the write coil facing area except for the area facing the outer magnetic pole.