Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Drum record
Patent
1998-03-13
2000-03-14
Klimowicz, William J.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Drum record
G11B 2121, G11B 560
Patent
active
060381019
ABSTRACT:
A magnetic head has a recording/reproducing element which is embedded in an insulation layer made of an AlO.sub.x thin film and a leading end of which is positioned at a medium opposed face. A high-hardness coating layer or a high-thermal conductivity coating layer made of diamond-like carbon or the like is disposed on a peripheral region of the medium opposed face, excluding the leading end of the recording/reproducing element and a region in the neighborhood thereof. Even in the case where the magnetic head is applied to a magnetic disk apparatus of contact recording/reproducing system, it is possible to greatly restrain wear of the leading end of the recording/reproducing element and the region in the neighborhood thereof. Further, the heat dissipation characteristic of the leading end of the recording/reproducing element can be improved greatly. The dishing of the leading end of the recording/reproducing element can be reduced to a great extent by so etching the peripheral region of the medium opposed face that the leading end of the recording/reproducing element is projected; forming the high-hardness coating layer on an etched region; and processing the projected region by wear in a final process.
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John Sivertsen, et al., "Diamond-Like Carbon Films as Wear-Protective Coatings on Media and Head Sliders", Journal of the Magnetics Society of Japan, vol. 21, Supplement, No. S2 , 1997, pp. 89-94.
Ito Jun
Ohsawa Yuichi
Sahashi Masashi
Sakakubo Takeo
Tanimoto Kazushi
Kabushiki Kaisha Toshiba
Klimowicz William J.
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