METHOD FOR MANUFACTURING GLASS SUBSTRATE FOR INFORMATION RECORDING MEDIUM

PROBLEM TO BE SOLVED: To provide a method for manufacturing a glass substrate for an information recording medium capable of achieving a proper surface roughening process in a previous process of a polishing process even in the case of using a glass substrate having high hardness.SOLUTION: A first p...

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Hauptverfasser:	TAKAHASHI TASUKU, NAGASHIMA YUJI, NAKAMURA KEIJI, NAKAE HAZUKI
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMISTRY GLASS INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER JOINING GLASS TO GLASS OR OTHER MATERIALS METALLURGY MINERAL OR SLAG WOOL PHYSICS SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method for manufacturing a glass substrate for an information recording medium capable of achieving a proper surface roughening process in a previous process of a polishing process even in the case of using a glass substrate having high hardness.SOLUTION: A first polishing process includes a process in which main surfaces 2, 3 of a glass substrate 1 is held inclinedly with respect to a horizontal plane, the center lines CL of nozzles 110A, 110B are made almost perpendicular to the main surfaces 2, 3, and the nozzles 110A and 110B spray a plurality of particles 200g to the main surfaces 2, 3 of the glass substrate 1.