| 摘要 |
In the magnetic disc apparatus of the present invention, an air filter for filtration has a filter element bent in a zigzag form with a pitch equal to an interval at which plural magnetic discs are separately housed in a closed casing. The bend lines of the filter element are set on planes where the centers in the thickness direction of the magnetic discs are positioned. The air flow is caused by rotation of the magnetic discs so as to enter the air filter, and is not liable to have stagnation thereof in front of the filter element. Static pressure of the air flow in front of the filter element is substantially uniform.
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