| 摘要 |
PROBLEM TO BE SOLVED: To reduce recording bleeding amounts in a recording medium by reducing magnetic saturation at width directional edge parts in narrow track width, and to sufficiently secure a prescribed recording magnetic field. SOLUTION: A second magnetic yoke 35 is provided with magnetic gap depth 37 (GD) for allowing a magnetic gap 36 to hold an almost equal interval from the top end to rear part of the second magnetic pole, and an interval with a first magnetic yoke is widened from a position equivalent to the magnetic gap depth to the rear part. The second magnetic pole of the second magnetic yoke is provided with track width directional width TW for recording a signal in the track width of a recording medium, and the width TW holds the same width only in prescribed length PH from the top end to rear part of the second pole, and the width is widened from a position equivalent to the prescribed length to the rear part, and the prescribed length PH until the widening start position of the width TW in the second magnetic yoke is made shorter than the magnetic gap depth GD.
|
