Method for texturing a magnetic disk silicate glass substrate

Details Method for texturing a magnetic disk silicate glass substrate Method for texturing a magnetic disk silicate glass substrate

1989-03-29

1992-02-11

Cashion, Jr., Merrell C.

Coating processes

Magnetic base or coating

Magnetic coating

427131, 4274301, 428 64, 428 65, 428141, 428426, 428694, 428900, 156663, 156646, G11B 500

Patent

active

050874810

ABSTRACT:
A glass disk is subjected to a chemical or gentle mechanical polishing step to remove microcracks or scratches in the disk surface prior to chemically texturing the disk. Thereafter, magnetic media is deposited onto the glass disk. We have discovered that by performing this pre-texturing polishing step, we can avoid the phenomenon of "linkage bumps," which could otherwise cause the resulting magnetic disk to fail a glide-type test or to cause a read/write head crash.

REFERENCES:
patent: 3938978 (1976-02-01), Hummel
patent: 4274907 (1981-06-01), Vig et al.
patent: 4833001 (1989-05-01), Kijima et al.
patent: 4876117 (1989-10-01), Bornstein

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