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US 6,751,060 B2Granted
Magnetic media with readable topographical features
AssigneeImation Corp.
InventorGarry R. Lundstrom
Life of this patent
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Abstract
Magnetic patterned media comprise topographical features readable with a slider-mounted non-magnetic transducer sensitive primarily to a local aerodynamic boundary condition, in addition to a magnetic recording layer substantially conforming to the topographical features. Passage of a transducer over the features generates effects that can be detected in, and separated from, the magnetic recording signal.
Claims10
A magnetic recording medium, comprising:
- a) a substrate having topographical features that extend above a surface of the substrate to readably affect a local aerodynamic boundary condition,
- wherein the features extend above the surface to a height that is greater than or equal to approximately five nanometers and less than or equal to approximately one hundred nanometers and
- wherein en arrangement of the features on the substrate defines a data signal;
- and
- b) a magnetic recording layer substantially conforming to the topographical features.
2 more elements
A magnetic recording medium comprising:
- a) a substrate having topographical features that extend below a surface of the substrate to readably effect a local aerodynamic boundary condition,
- wherein the features extend below the surface to a depth that is greater than or equal to approximately twenty nanometers and less than or equal to approximately one hundred and fifty nanometers, and
- wherein an arrangement of the features on the substrate defines a data signal;
- and
- b) a magnetic recording layer substantially conforming to the topographical features.
2 more elements
Dependencies are inferred from the claim text.