Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Drum record
Patent
1997-12-09
2000-08-08
Letscher, George J.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Drum record
G11B 560
Patent
active
061010669
ABSTRACT:
The present invention provides a magnetic head including a slider 1 and a thin-film element 3, a magnetic recording/reproducing apparatus including the same, and a method for manufacturing the same. According to the present invention, since a resist layer is formed on the thin-film element 3 prior to a milling process, the thin-film element can be protected from the influence of the milling process, and generation of an element recess can be inhibited. Further, since the slider 1 is preferably formed of a ceramic composition including Al.sub.2 O.sub.3 and TiC, the roughness can be readily adjusted by the milling process. Moreover, when the center line mean roughness of each opposing surface 5 of the slider, said surface opposing the recording medium, is represented by R.sub.ah1 and that of the disk serving as the recording medium is represented by R.sub.ad, the relationship, 6 nm.ltoreq.R.sub.ah1 +R.sub.ad .ltoreq.19 nm is preferably satisfied. Due to this, adsorption between the opposing surface and the surface of the disk can be prevented, and the torque for starting the disk can be lowered.
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Ishihara Hirohisa
Nakabayashi Isao
Alps Electric Co. ,Ltd.
Letscher George J.
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