Magnetic recording medium and method of manufacturing the same
AssigneeCanon Kabushiki Kaisha
InventorsTatsuya Saito, Toru Den
Life of this patent
Estimating the term…
Abstract
The present invention provides a method of manufacturing a magnetic recording medium having high recording density. The magnetic recording medium manufacturing method of the present invention is directed to a manufacturing method including: disposing at least a silicon layer on a substrate; disposing an uneven structure including regularly arranged projections on the silicon layer; disposing magnetic material on the upper surfaces of the projections and within recessed parts of the uneven structure; and allowing the magnetic material disposed within each recessed part to be changed into silicon compound by heat treatment.
Claims18
A magnetic recording medium including an uneven structure comprising regularly arranged projections disposed on a substrate;
- hard magnetic materials disposed on upper surfaces of the projections of the uneven structure;
- an underlying layer disposed within each of recessed parts of the uneven structure;
- and a non-magnetic material or a soft-magnetic material containing at least compound of the underlying layer disposed on the underlying layer.
A magnetic recording medium including:
- an underlying layer disposed on a substrate;
- an uneven structure comprising regularly arranged projections disposed on the underlying layer;
- hard magnetic materials disposed on upper surfaces of the projections of the uneven structure;
- a non-magnetic material or a soft-magnetic material containing at least compound of the underlying layer disposed within each of recessed parts of the uneven structure.
A method of manufacturing a magnetic recording medium, comprising the steps of:
- disposing, on a substrate, an uneven structure comprising regularly arranged projections;
- disposing an underlying layer within each of recessed parts of the uneven structure;
- disposing a magnetic material on each of the upper surfaces of the projections and within each of the recessed parts of the uneven structure;
- and
- allowing the magnetic material disposed within each of the recessed parts to be changed into compound which contains the material of the underlying layer by heat treatment.
A method of manufacturing a magnetic recording medium, comprising the steps of:
- disposing at least an underlying layer on a substrate;
- disposing an uneven structure comprising regularly arranged projections on the underlying layer;
- disposing a magnetic material on each of the upper surfaces of the projections and within each of recessed parts of the uneven structure;
- and
- allowing the magnetic material disposed within each of the recessed parts to be changed into compound which contains the material of the underlying layer by heat treatment.
Dependencies are inferred from the claim text.