Process of manufacturing a glass substrate for a magnetic disk

Details Process of manufacturing a glass substrate for a magnetic disk Process of manufacturing a glass substrate for a magnetic disk

1993-07-08

1999-04-20

Chen, Vivian

Etching a substrate: processes

Masking of a substrate using material resistant to an etchant

Resist material applied in particulate form or spray

216 22, 216 41, 216 49, 216 50, 216 97, B44C 122, C03C 1500

Patent

active

058955828

ABSTRACT:
The present invention relates to a glass substrate for a thin film magnetic data storage disk and to a process for producing such a glass substrate. The process includes the steps of: (a) providing a glass substrate; (b) printing a regular masking pattern of printed dots onto at least a portion of the surface of the substrate; and (c) etching the unmasked surface of the substrate thereby to texture the substrate surface. The glass substrate for a thin film magnetic data storage disk has a roughened surface produced by preferential area etching, the roughened surface being composed of a regular pattern of peaks separated by valleys.

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