Cylindrical magnetic recording medium and method for manufacturing the same
AssigneeCanon Kabushiki Kaisha
InventorsTatsuya Saito, Tohru Den
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Abstract
A magnetic recording medium includes a cylindrical substrate and pores embedded with a magnetic substance that are provided on the outer circumferential surface of the cylindrical substrate and aligned in tracks that are in parallel with one another along the center axis of the cylindrical substrate. The tracks have as their center the center axis of the cylindrical substrate, and form circular orbits defined by planes perpendicular to the center axis. Alternatively, the tracks are in a spiral orbit or in spiral orbits whose center is the center axis of the cylindrical substrate. The pores at intersections of vertical and horizontal rows are aligned in quadrilaterals such as squares, rectangles or rhombi.
Claims22
A cylindrical magnetic recording medium comprising:
- a plurality of pores that are periodically aligned;
- and
- a magnetic substance filled in the pores.
A recording/reading apparatus comprising:
- at least a device for outputting data signals and a device for inputting data;
- and
- a cylindrical magnetic recording medium including a plurality of pores that are periodically aligned, and a magnetic substance filled in the pores, wherein data is recorded in the cylindrical magnetic recording medium.
A method for manufacturing a magnetic recording medium, comprising the steps of:
- regularly forming pores in a surface of a cylindrical substrate;
- and
- embedding a magnetic substance in the pores.
Dependencies are inferred from the claim text.