Information recording medium

Details Information recording medium Information recording medium

1997-12-23

1999-10-26

Kiliman, Leszek

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

428145, 428410, 428426, 428432, 428684ST, 428684SG, 428900, 427128, 427129, 427130, 427131, G11B 566

Patent

active

059724609

ABSTRACT:
A highly reliable information recording medium capable of meeting a higher rotation speed of a drive device and a smaller thickness and a higher recording density of an information recording medium can be produced by using, as a substrate, chemically reinforced glass obtained from chemically reinforceable glass having an SiO.sub.2 --Al.sub.2 O.sub.3 --R.sub.2 O total content of more than 98% by weight and having a specific modulus of at least 30.times.10.sup.2.

REFERENCES:
patent: 4156755 (1979-05-01), Rinehart

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