| 摘要 |
PURPOSE:To ensure the application of the large and even load for a polishing device which polishes concurrently the both surfaces of a magnetic disk set vertically, by pressing a pad with the magnetic force. CONSTITUTION:A pad attaching housing 2 attached with a thin pad 7 which is movable along the center shaft of a fixed shaft 1 does not mask so much a permeable material or magnetic flux is provided to the shaft 1 via a bearing. At the same time, an outer housing 4 containing a pad attaching housing 6 of the same material as the housing 2 attached with a magnetic coil 5 and a pad 8 similar to the pad 7 is connected to a shaft 3. Then a magnetic disk 9 is held by shifting the shaft 3 toward the center shaft, and at the same time the current is flowed to the coil 5 to form a magnetic flux 12. The load is applied from both surfaces of the disk 9 with the magnetic force. |
