Glass substrate for information recording medium and method...

Details Glass substrate for information recording medium and method... Glass substrate for information recording medium and method...

2003-10-22

2011-10-18

Hail, Joseph J (Department: 3723)

Abrading

Abrading process

With critical nonabrading work treating

C451S041000, C451S059000

Reexamination Certificate

active

08038512

ABSTRACT:
A method for manufacturing a glass substrate for an information recording medium having a high level of cleanness and superior smoothness. The manufacturing method includes washing a disk-shaped glass plate with an acid washing liquid, removing at least part of a surface layer, which is formed on the surface of the glass plate, by performing grinding with diamond abrasion grains, and washing the surface with a neutral or alkaline washing liquid.

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U.S. Appl. No. 10/532,538, filed Apr. 22, 2004 entitled, “Glass Substrate for Information Recording Medium and Method for Manufacturing Same.” (Related).
U.S. Appl. No. 10/532,550, filed Apr. 22, 2005 entitled, “Glass Substrate for Information Recording Medium and Method for Manufacturing the Same.” (Related).

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