| US 7,583,472 B2 | ||
| Thin film magnetic head, method of manufacturing the same, and magnetic recording apparatus | ||
| Naoto Matono, Saku (Japan) | ||
| Assigned to SAE Magnetics (H.K.) Ltd., Shatin, N.T. (Hong Kong Special Administrative Region of the People's Republic of China, The) | ||
| Filed on Aug. 25, 2004, as Appl. No. 10/926,895. | ||
| Claims priority of application No. 2003-328632 (JP), filed on Sep. 19, 2003. | ||
| Prior Publication US 2005/0105215 A1, May 19, 2005 | ||
| Int. Cl. G11B 5/127 (2006.01); G11B 5/147 (2006.01) | ||
| U.S. Cl. 360—125.1 [360/125.11; 360/125.14; 360/125.15] | 4 Claims |
| 1. A thin film magnetic head comprising:
a thin film coil for generating a magnetic flux; and
a magnetic pole layer which extends rearward from a recording-medium-facing surface facing a recording medium traveling in
a medium travel direction and emits the magnetic flux generated by the thin film coil toward the recording medium,
wherein the magnetic pole layer includes: a uniform width portion having uniform width that specifies recording track width
of the recording medium, extending from the recording-medium-facing surface, and including an exposed surface exposed on the
recording-medium-facing surface; and a wide portion coupled to the rear end of the uniform width portion, extending with width
larger than the uniform width, and including widened end surfaces along the increased width, and
height H2 of the widened end surface in the wide portion is smaller than height H1 of the exposed surface in the uniform width portion (H2<H1), wherein the wide portion includes wing portions positioned on both sides of the uniform width portion, and thickness T2 of the wing portions is smaller than thickness T1 of the uniform width portion at least on the side close to the widened end surfaces (T2<T1).
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