| 摘要 |
A DISC DRIVING DEVICE IN WHICH THE HEAD LOADING PRESSURE IS LOWERED FOR EMPLOYING A HIGH-DENSITY FLOPPY DISC HAVING ITS MAGNETIC LAYER REDUCED IN THICKNESS FOR ACHIEVING HIGH RECORDING DENSITY. THE CHUCKING AND CENTERING OF A CONVENTIONAL FLOPPY DISC AND THE CHUCKING OF A HIGH-DENSITY FLOPPY DISC ARE TO BE ACHIEVED RELIABLY. TO THIS AND, THE DISC IS ROTATED AT THE LOWER VELOCITY DURING DISC LOADING AND SUBSEQUENTLY THE DISC IS ROTATED AT THE HIGHER VELOCITY.
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