Magnetic recording disk having textured surface

Details Magnetic recording disk having textured surface Magnetic recording disk having textured surface

1991-01-22

1992-09-01

Heinz, A. J.

Dynamic magnetic information storage or retrieval

Record medium

Disk

360131, G11B 582

Patent

active

051445123

ABSTRACT:
A magnetic recording disk comprising at least a magnetic layer on a circular rigid substrate with a physically abraded surface having a uniform series of physical circumferential texturing, wherein the relationship between the value Rv from the diametrical arithmetic-average center line to the deepest valley and the value Rp from such center line to the highest peak is selectively determined as Rp/Rv.gtoreq.0.6 so that the CSS durability is enhanced.

REFERENCES:
patent: 4985306 (1991-01-01), Morizane
patent: 4996622 (1991-02-01), Takatsuki

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