Dynamic magnetic information storage or retrieval – Head – Core
Patent
1998-10-13
1999-11-30
Klimowicz, William J.
Dynamic magnetic information storage or retrieval
Head
Core
360122, G11B 5127, G11B 5187
Patent
active
059953411
ABSTRACT:
A magnetic disk drive has a magnetic head for recording or reproducing information on or from a magnetic recording medium. The magnetic recording medium includes a magnetic recording layer for information recording which has magnetic anisotropy in a direction perpendicular to a surface of the recording medium, a soft magnetic under layer under the magnetic recording layer and having soft magnetic properties, and a non-magnetic substrate. The magnetic disk drive records a signal with a skew angle on at least some tracks. A main pole has a size satisfying pL<(tP-tW cos .theta.)/sin .theta., where pL is a width of an end face of the main pole in a traveling direction, tW is a track width of the end face of the main pole, tP is a track pitch, and .theta. is a skew angle of a trailing edge of the main pole.
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patent: 5550796 (1996-08-01), Ishii
IEEE Trans. Magn., vol. MAG-27, pp. 4921-4925, Nov. 1991.
Journal of the Magnetic Society of Japan vol. 15, Supplement, No. SZ, pp. 185-190, 1991.
Taguchi Tomoko
Tanaka Tsutomu
Tanaka Yoichiro
Kabushiki Kaisha Toshiba
Klimowicz William J.
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