Stock material or miscellaneous articles – Magnetic recording component or stock – Thin film media
Reexamination Certificate
2007-01-22
2010-11-16
Rickman, Holly (Department: 1785)
Stock material or miscellaneous articles
Magnetic recording component or stock
Thin film media
C508S422000
Reexamination Certificate
active
07833641
ABSTRACT:
Disclosed is a magnetic disk which has a lubricant layer with excellent heat resistance and high adhesiveness and is free from fly-stiction failure or corrosion failure even at an extremely low flying height of 10 nm or lower. Also disclosed is a magnetic disk which has a lubricant layer with good thermal properties and can exert a stable action over a wide temperature range. The magnetic disk comprises a substrate (1), and a magnetic layer (3), a carbon-containing protective layer (4) and a lubricant layer (5) provided on the substrate (1), wherein the lubricant layer (5) contains a magnetic disk lubricant comprising a compound having a phosphazene ring and two or more hydroxyl and/or carboxyl groups in the molecule.
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Singapore Office Action corresponding to Singapore Patent Application No. 200805319-1, dated Dec. 10, 2009.
Shimokawa Koichi
Tomiyasu Hiroshi
Rickman Holly
WD Media (Singapore) Pte. Ltd.
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