Dynamic magnetic information storage or retrieval – Head – Coil
Reexamination Certificate
2004-08-25
2008-08-19
Watko, Julie Anne (Department: 2627)
Dynamic magnetic information storage or retrieval
Head
Coil
Reexamination Certificate
active
07414810
ABSTRACT:
A magnetic head structure has a coil and a magnetic pole allowing a magnetic flux generated by the coil to be transmitted therethrough and forming a magnetic gap. An insulating layer surrounds the coil, and a protective layer covers the insulating layer and the magnetic pole. The insulating layer has a volume equal to or greater than a value which is determined with respect to a thickness of the protective layer. It is preferable to increase the volume of the insulating layer as the thickness of the protective layer is made greater. By increasing the volume of the insulating layer, the protrusion of a portion of a floating surface of the magnetic head slider near the magnetic pole, toward the disk, is reduced.
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Aoki Kenichiro
Aruga Keiji
Hoshino Toshinori
Maeda Hiroshi
Nakada Toshiyuki
Fujitsu Limited
Greer Burns & Crain Ltd.
Watko Julie Anne
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