Perpendicular magnetic recording disk with a soft magnetic...

Dynamic magnetic information storage or retrieval – Record medium – Disk

Reexamination Certificate

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C360S077070

Reexamination Certificate

active

07656615

ABSTRACT:
A method of forming a discrete track recording pattern on a soft magnetic underlayer of a perpendicular magnetic recording disk. In one embodiment, the soft magnetic underlayer is continuous throughout the discrete track recording pattern.

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