Magnetic disk


PURPOSE: To prevent the occurrence of dust and head crash due to the damages of a magnetic disk and a clamp mechanism, by covering the surface of the magnetic disk around a hole in the center of a discoid hard substrate with synthetic resin buffers in a ring-like shape. CONSTITUTION: The clamp hole 2 is drilled in the center of the discoid hard magnetic disk 1 equipped with magnetic thin layers on both surfaces 101 and 102. The synthetic resin buffers 41 and 42 cover both surfaces 101 and 102 of the magnetic disk 1 around the hole 2, thereby covering the surfaces in a ring-like shape. If the clamp mechanism 7 clamps, the synthetic resin buffers 41 and 42 provide a buffer action between a spindle hub 71 constituting the magnetic disk 6 and the clamp mechanism 7, and between a clamp member 72 and a sleeve 8. Thus the magnetic disk 6, the clamp mechanism 7 and the sleeve 8 are never damaged, thereby preventing the occurrence of dust. Dust may occur due to the damages. COPYRIGHT: (C)1988,JPO&Japio




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Cited By (3)

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    JP-2007063828-AMarch 15, 2007Sanwa Shutter Corp, 三和シヤッター工業株式会社建築用シャッター装置における錠装置
    JP-H02134780-AMay 23, 1990Fujitsu LtdDisk lamination structure
    JP-H035266-UJanuary 18, 1991