| 摘要 |
With a film windup device of this invention, rotary motion of sprocket or sprocket shaft is transmitted to spool by way of clutch mechanism; shutter windup system is separated from sprocket and spool by using the rewind mechanism to allow the shutter to be wound alone; shutter is separated in the case of rewinding by rewind mechanism; only the sprocket can be rotated backward by the action of the aforementioned clutch without transmitting the backward rotation to the spool.
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