| 摘要 |
A medium guide elevating device includes a rotor, a medium guide unit, a sensor, a first engaging portion and a second engaging portion. The rotor is driven in forward rotation or in reverse rotation. The medium guide unit is moved to a first position when the rotor is driven in forward rotation, and is moved to a second position when the rotor is driven in reverse rotation. The sensor has a selector switch that switches between an on state and an off state. The sensor enters the off state when the medium guide unit is located between the first position and the second position. The first engaging portion engages the selector switch to switch the sensor to the on state when the medium guide unit is moved to the first position. The second engaging portion engages the selector switch to switch the sensor to the on state when the medium guide unit is moved to the second position.
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