Information recording medium
AssigneeTDK Corporation
InventorsMitsuru Takai, Yoshikazu Soeno, Katsumichi Tagami, Kazuya Shimakawa, Takahiro Suwa
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Abstract
In an information recording medium where respective concave parts of a magnetic layer, which is formed on at least one side e of a substrate and in which a predetermined convex/concave pattern has been formed, are filled with non-magnetic material and non-magnetic layers are formed by the non-magnetic material in at least partial regions of respective upper surfaces of respective convex parts of the magnetic layer, the non-magnetic layers are formed so that parts thereof protrude further in a direction in which the convex parts protrude than other parts of the non-magnetic layers.
Claims5
An information recording medium onto which lubricant is applied, where respective concave parts of a magnetic layer, which is formed on at least one side of a substrate and in which a predetermined convex/concave pattern has been formed, are filled with non-magnetic material, and non-magnetic layers are formed by the non-magnetic material in at least partial regions of respective upper surfaces of respective convex parts of the magnetic layer,
- wherein the non-magnetic layers are formed so that parts of said non-magnetic layers over said convex parts of the magnetic layer protrude further in a direction in which the convex parts protrude than other parts of the non-magnetic layers over said convex parts of said magnetic layer, and
- wherein a protective layer comprising carbon film is formed on the non-magnetic material filled in the concave parts and on the non-magnetic layers, the lubricant being applied on a surface of the protective layer.
Dependencies are inferred from the claim text.