Method for producing chemically strengthened glass substrate...

Details Method for producing chemically strengthened glass substrate... Method for producing chemically strengthened glass substrate...

2003-03-27

2008-08-26

Griffin, Steven P. (Department: 1791)

Glass manufacturing

Processes

With chemically reactive treatment of glass preform

C065S030100

Reexamination Certificate

active

07415841

ABSTRACT:
Prior to conducting chemical strengthening treatment by contacting a glass with a potassium-containing chemical strengthening treating solution, oxidation treatment is conducted to iron-containing particles adhered to a surface of the glass as a pre-step, and the glass is then chemically strengthened. The oxidation treatment is a heat treatment conducted at 80-400° C. in the air. A glass substrate for an information recording medium is obtained by the method.

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