Dynamic magnetic information storage or retrieval – Head – Core
Reexamination Certificate
2005-08-31
2009-11-03
Renner, Craig A (Department: 2627)
Dynamic magnetic information storage or retrieval
Head
Core
C360S125740, C360S128000
Reexamination Certificate
active
07612965
ABSTRACT:
A thin-film magnetic head with a higher protrusion efficiency is provided, which comprises: a substrate with an air bearing surface (ABS); a read head element including a lower and upper shield layers, and a write head element including a magnetic pole layer; a heating element provided in a position opposite to the ABS in relation to the read and write head elements; and a heatsink element including a heatsink layer provided adjacent to an end opposite to an end in the ABS side of at least one layer of the lower and upper shield layers and the magnetic pole layer, the heatsink element having a shape that a pattern width in the track-width direction of an end portion in the ABS side is larger than a pattern width in the track-width direction of an end portion opposite to the end portion in the ABS side.
REFERENCES:
patent: 5991113 (1999-11-01), Meyer et al.
patent: 2003/0099054 (2003-05-01), Kamijima
patent: 2003/0174430 (2003-09-01), Takahashi et al.
patent: 2004/0017638 (2004-01-01), Sato
patent: 2006/0007594 (2006-01-01), Umehara et al.
Hirabayashi Hiraku
Kurihara Katsuki
Oike Taro
Ota Norikazu
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Renner Craig A
TDK Corporation
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