Medium processing device and automated teller machine

A medium processing device comprising:

• a container configured to contain a medium to be delivered to a user;
• a bill press and a pool guide configured to be opposed to each other in the container and movable in the container;
• and
• a control section configured to control movements of the bill press and the pool guide,
• wherein a first time period and a second time period subsequent to the first time period are provided while the control section causes each of the bill press and the pool guide to move from an accumulation position to a delivery position, the first time period being a time period where both the bill press and the pool guide move, the second time period being a time period in which after the bill press reaches the delivery position, the pool guide moves in a direction away from the bill press and reach the delivery position, the accumulation position being a position for accumulating the medium conveyed to the container between the bill press and the pool guide, the delivery position being a position for delivering the medium accumulated between the bill press and the pool guide to the user.