| 摘要 |
In a camera, the first cam is rotated to assume a rotational phase at which drive of the first shutter blade set with the first drive force is not hindered and the second drive force charge cam face in contact with the second charge member charges the second drive force as the rotating shaft is caused to rotate to a first rotational phase. The second drive force charge cam in contact with the second charge member sustains a second drive force charging state during a transition period in which the rotating shaft in the first rotational phase rotates to a second rotational phase. The first drive force charge cam face in contact with the first charge member charges the first drive force and the second drive force charge cam face in contact with the second charge member charges the second drive force as the rotating shaft is caused to rotate from the first rotational phase to the second rotational phase.
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