SUBSTRATE FOR MAGNETIC DISK, METHOD FOR MANUFACTURING THE SAME, AND MAGNETIC DISK USING SUBSTRATE FOR MAGNETIC DISK

To provide a substrate for a magnetic disk having a stable fluttering characteristic, and a method for manufacturing the substrate.SOLUTION: The substrate for a magnetic disk according to the present invention is characterized in that the flatness is 30 μm or less and the difference in the flatness...

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Bibliographic Details
Main Authors IMAGAWA KIMIE, HATAKEYAMA HIDEYUKI, YONEMITSU MAKOTO, KITAWAKI KOTARO, NAKAMURA TADAHIRO, NAKAYAMA MASARU
Format Patent
LanguageEnglish
Japanese
Published 19.09.2019
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