Magnetic recording disk and process for manufacture thereof

Details Magnetic recording disk and process for manufacture thereof Magnetic recording disk and process for manufacture thereof

2007-10-02

2007-10-02

Bernatz, Kevin M. (Department: 1773)

Dynamic magnetic information storage or retrieval

Record medium

Disk

C428S833000, C428S833400, C428S835800, C360S130300

Reexamination Certificate

active

11097283

ABSTRACT:
A magnetic recording disk having a substrate, a magnetic layer formed on the substrate, a protective layer formed on the magnetic layer and a lubricant layer formed on the protective layer, the lubricant layer containing a perfluoropolyether compound having an end moiety containing a phosphazene ring and a perfluoropolyether compound having an end moiety containing a hydroxyl group, or the lubricant layer containing a perfluoropolyether compound having an end moiety containing a hydroxyl group on the protective layer side and a perfluoropolyether compound having an end moiety containing a phosphazene ring on the other surface side, and a process for manufacturing each of these magnetic recording disks.

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