Magnetic disk substrate and magnetic disk

Magnetic disk substrate and magnetic disk

The invention relates to a magnetic disk substrate and a magnetic disk. The disk-shaped magnetic disk substrate has a diameter D of 85 mm or more, a plate thickness T of 0.6 mm or less, and a material having a Young's modulus E of 90 GPa or more is used in the substrate. 本发明涉及磁盘用基板以及磁盘。圆盘形状的磁盘用...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: EDA SHINJI
Format: Patent
Sprache:chi ; eng
Schlagworte:
DRESSING OR CONDITIONING OF ABRADING SURFACES
FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
GRINDING
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING
PERFORMING OPERATIONS
PHYSICS
POLISHING
TRANSPORTING
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Beschreibung
Zusammenfassung:The invention relates to a magnetic disk substrate and a magnetic disk. The disk-shaped magnetic disk substrate has a diameter D of 85 mm or more, a plate thickness T of 0.6 mm or less, and a material having a Young's modulus E of 90 GPa or more is used in the substrate. 本发明涉及磁盘用基板以及磁盘。圆盘形状的磁盘用基板的直径D为85mm以上，所述基板的板厚T为0.6mm以下，所述基板中使用杨氏模量E为90GPa以上的材料。