| 摘要 |
A magnetic recording medium in which the center of a magnetic head can be brought to a centerline of a reference track, thereby enhancing the reliability of the magnetic recording medium, the reference track being provided at a predetermined position of a magnetic layer of the medium, a number of magnetic head-tracking optical tracks are provided respectively at positions spaced predetermined distances from the reference track in a direction perpendicular to the direction of travel of the magnetic head, and a data track is formed between any two adjacent ones of the magnetic head-tracking optical tracks, the reference track having a pair of reference recess regions arranged symmetrically with respect to an arbitrary point on the centerline of the reference track, and a flat portion with no recess formed adjacent to each of the reference recess regions, the recess in each reference recess region being formed by cutting by a laser.
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