Patent ID: 7085099

Claim:
A thin film magnetic head with a write element, the write element comprising a lower yoke, a lower pole, an upper yoke, an upper pole, a gap film, a lower coil, and an upper coil, wherein: the lower pole projects from one surface of the lower yoke at a medium-facing surface side; the upper yoke is disposed at a distance from the lower yoke and is connected to the lower yoke by a back gap portion that is recessed in the thin film magnetic head from a medium-facing surface; the upper pole is adjacent to the gap film, faces the lower pole with the gap film interposed between the lower pole and the upper pole, and has a top surface adjacent to one surface of the upper yoke; the lower coil surrounds in a spiral form the back gap portion and is arranged within a height of the lower pole in relation to said one surface of the lower yoke; the upper coil is disposed above the lower coil, is arranged within a height of the upper pole in relation to said one surface of the upper yoke, and surrounds in a spiral form the back gap portion; the gap film is at an intermediate level in a pole length that is defined by the height of the lower pole and the height of the upper pole; the lower coil comprises a first coil and a second coil; the first and second coils surround in a spiral form the back gap portion, and the first coil is fitted into a space between coil turns of the second coil and is insulated from the coil turns of the second coil, and the first and second coils are connected to each other so as to generate magnetic flux in the same direction; the upper coil comprises a third coil and a fourth coil; and the third and fourth coils surround in a spiral form the back gap portion, and the third coil is fitted into a space between coil turns of the fourth coil and is insulated from the coil turns of the fourth coil, and the third and fourth coils are connected to each other so as to generate magnetic flux in the same direction and connected to the lower coil so as to generate magnetic flux in the same direction as the lower coil.