| 摘要 |
A cartridge is disposed in a chamber of a cartridge receiving apparatus. An actuating member on the apparatus is moveable a first increment to initiate an apparatus operation and moveable a second increment. A latch is positioned to prevent the actuating member from being moved the second increment after it is moved the first increment. The actuating member is moved the second increment only when the cartridge is at least partially removed from the chamber. The cartridge receiving apparatus may further include a prevention member to prevent the chamber from receiving an exposed filmstrip.
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