| 摘要 |
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.
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