Method of processing a glass substrate for a magnetic disk and method of manufacturing the glass substrate
AssigneesHoya Corporation, Hoya Glass Disk (Thailand) Ltd.
InventorsNobuyuki Eto, Hideki Isono
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Abstract
In a method of processing a glass substrate for a magnetic disk, the glass substrate containing alkali ions, the glass substrate is processed by the use of a first alkali ion having a first ion radius greater than the smallest ion radius of the smallest alkali ion among the alkali ions contained the glass substrate. Subsequently, the glass substrate is processed by the use of a second alkali ion having a second ion radius greater than the first ion radius of the first alkali ion.
Claims6
A method of processing a glass substrate for a magnetic disk, the glass substrate containing alkali ions, the method comprising the steps of:
- processing the glass substrate by the use of a first alkali ion having a first ion radius greater than the smallest ion radius of the smallest alkali ion among the alkali ions contained the glass substrate;
- and
- subsequently processing the glass substrate by the use of a second alkali ion having a second ion radius greater than the first ion radius of the first alkali ion.
Dependencies are inferred from the claim text.