Method of manufacturing a 1-inch diameter glass substrate for a magnetic disk
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United States of America Patent
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Nov 13, 2001
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N/A
app pub date -
Feb 16, 2001
filing date -
Feb 16, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of manufacturing a 1-inch diameter glass substrate for a magnetic disc in which a plate glass is press molded using a mold formed of a super-hard material and having a surface of a prescribed roughness. Ion implantation using nitrogen ions is performed on the surface of the mold, after which ion implantation using palladium ions, platinum ions, and carbon ions is performed in the order given. Finally, the surface of the mold is coated with a graphite or amorphous diamond-like carbon coating.
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