| http://www.w3.org/ns/prov#value | - The present invention has been made to overcome such problems that when a magnetic layer is formed on a glass substrate for magnetic disks by sputtering, the substrate cannot be grounded and it tends to be difficult to apply a bias during the sputtering, and to overcome such problems that static electricity is likely to be generated and attachment of e.g. dust is likely to occur, and it is an obje
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