| 摘要 |
PROBLEM TO BE SOLVED: To perform different operations with a single driving source and to prevent external input from a driving route which is not transmitting driving force. SOLUTION: In a power transmission switching mechanism 13 for changing over driving routes which transmit the driving force of a single driving source 10 to one of a plurality of driving routes 11 and 12, there is provided a latching means 14 latching a gear 26 which is a component of the driving route 11 which does not transmit the driving force of the driving source 10 among the plurality of driving routes 11 and 12.
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