Dynamic magnetic information storage or retrieval – Head – Core
Reexamination Certificate
2006-08-08
2006-08-08
Korzuch, William (Department: 2627)
Dynamic magnetic information storage or retrieval
Head
Core
C428S810000
Reexamination Certificate
active
07088548
ABSTRACT:
To make a soft magnetic underlayer of a double layered perpendicular magnetic recording medium thinner than heretofore while avoiding saturation. Assuming that Tb1is the thickness of the soft magnetic underlayer of the double layered perpendicular magnetic recording medium, BS2the saturation flux density of the same, Tmthe thickness of a magnetic recording head's main pole1along a track direction in the vicinity of its floating surface, TWWthe track width of the same, and BS1the saturation flux density of the same, then Tb1<(BS1×Tm×TWW)/2(BS2×(Tm+TWW)) is satisfied.
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Machine Translation of JP 10-003643; 22 pp.
Abstract of JP 61-026927.
Mochizuki Masafumi
Nishida Yasutaka
Takano Hisashi
Hitachi Global Storage Technologies Japan Ltd.
Kenyon & Kenyon LLP
Korzuch William
Magee Christopher R.
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