| 摘要 |
PURPOSE:To reduce the external force exerted on a recording medium and to reduce its fatigue by supporting a driving pin fitted to a window hole of a rotary plate on an arm plate provided on an attracting plate driven by a rotary shaft and giving the force in the radial direction to a rotary plate a the driving pin being brought into contact with an elastic body when moved ore than specified distance. CONSTITUTION:The arm plate 5 is attracted to the attracting plate 11 consisting of permanent magnet and driven by the rotary shaft at the time when no rotary plate exists and there is room by a gap A between the arm plate 5 and the tip of an elastic body 8. Since the elastic body 8 does not work at the time when the driving in 7 is pushed down by the rotary plate, the force to push down may be small and the external force exerted on the recording medium is reduced. When the attracting plate 11 is then rotated and the driving pin 7 is brought into contact with the inner edge of the window hole of the rotary plate, the elastic body 8 and arm plate 5 are brought into contact to give the force in the radial direction to the rotary plate. The external force exerted on the recording medium is thus reduced and its fatigue can be reduced.
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