Magnetic recording medium and method of forming the same and mag

Details Magnetic recording medium and method of forming the same and mag Magnetic recording medium and method of forming the same and mag

1996-12-09

2000-04-25

Letscher, George J.

Dynamic magnetic information storage or retrieval

Record medium

G11B 574, G11B 2300

Patent

active

060551399

ABSTRACT:
A magnetic recording medium having magnetic patterns into which servo information are written and a magnetic recording layer into which data are written comprises a nonmagnetic substrate, a magnetic recording layer formed on the substrate, and a hard magnetic layer contacted the magnetic recording layer within servo signal recording regions on the substrate and constituting servo patterns of film thicknesses of which are varied in the track length direction. Thereby, more precise reading of the servo signals by the magnetic head is assured and a surface of the magnetic recording medium can be flatted.

REFERENCES:
patent: 5568331 (1996-10-01), Akagi et al.
patent: 5677819 (1997-10-01), Seko et al.

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