Magnetic recording medium and process for producing same

Details Magnetic recording medium and process for producing same Magnetic recording medium and process for producing same

1997-09-30

1999-10-26

Letscher, George J.

Dynamic magnetic information storage or retrieval

Record medium

Disk

G11B 582

Patent

active

059738944

ABSTRACT:
A magnetic recording medium having a substrate disc with microscopic bumps formed by focusing a laser beam, wherein spacings D between adjacent bumps in the circumferential direction of the disc are varied so that formula (1) is satisfied:

REFERENCES:
patent: 5062021 (1991-10-01), Ranjan et al.

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