| 摘要 |
PURPOSE:To perform stable magnetic recording on a magnetic sheet, by providing a plurality of support sections in contact with the upper side of a bearing of a driving shaft at a lower side of a reinforcement member provided at the center of a rotary magnetic sheet contained in a case at the prescribed intervals. CONSTITUTION:A reinforcement member 6 is fitted to a rotating center of a magnetic sheet 3 and a rotary driving shaft 5 is inserted to the member 6. A ring shaped magnetic substance 11 is incorporatedly fitted to the lower side of the member 6 and atracts with a magnet 12 each other. Support sections 16 of a prescribed interval are formed on the lower surface of the member 6. The support sections 16 contacts the upper surface of a bearing 17 provided to the shaft 5 to keep the recording surface of the magnetic sheet 3 horizontal. |
