Stock material or miscellaneous articles – Magnetic recording component or stock – Thin film media
Reexamination Certificate
2006-12-12
2006-12-12
Rickman, Holly (Department: 1773)
Stock material or miscellaneous articles
Magnetic recording component or stock
Thin film media
C428S833200
Reexamination Certificate
active
07147943
ABSTRACT:
This magnetic recording medium is characterized in that in the magnetic recording medium having a magnetic layer on a non-magnetic substrate by intercalating at least an under layer, the proportion of functional groups per 100 carbon atoms in a diamond-like carbon protective layer mainly composed of carbon for protecting the magnetic layer exceeds 20%. The bonding force between the protective layer and the lubricating layer of the magnetic recording medium is increased so that under high speed rotation, a decrease in the lubricating layer is not caused so as to provide a magnetic recording apparatus having high reliability.
REFERENCES:
patent: 5432012 (1995-07-01), Lal et al.
patent: 6299425 (2001-10-01), Hirano et al.
patent: 6303214 (2001-10-01), Chour et al.
Fujimaki Shigehiko
Honda Yoshinori
Ishikawa Hiroshi
Kokaku Yuuichi
Kozaki Tomonori
Antonelli, Terry Stout and Kraus, LLP.
Hitachi Global Storage Technologies Japan Ltd.
Rickman Holly
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