Medium transport device and image forming apparatus

A medium transport device, comprising:

• a transporting member that transports a medium toward a medium accommodating member;
• a medium offsetting member that moves the transporting member in a medium width direction to transport the medium to the medium accommodating member at positions shifted in the medium width direction;
• a guide member that is located upstream of the transporting member in a medium transport direction, the guide member being movable between a first position, in which the guide member guides the medium toward the medium accommodating member, and a second position, in which the guide member guides the medium to a destination different from the medium accommodating member, to guide the medium;
• and
• an interlocking member that includes a first interlocking member disposed on the medium offsetting member, and a second interlocking member disposed on the guide member, the second interlocking member moving the guide member between the first position and the second position while being in contact with the first interlocking member in response to a movement of the medium offsetting member in a width direction of the medium offsetting member.