The controller causes, when the motor temperature becomes equal to or higher than ta2, the motor to stop for x1 seconds each time one banknote is transported until the motor temperature becomes equal to or lower than ta1, when the motor temperature becomes equal to or higher than ta4, the motor to stop for x2 seconds each time one banknote is transported until the motor temperature becomes equal to or lower than ta3, when the motor temperature becomes equal to or higher than ta6, the motor to stop until the motor temperature becomes equal to or lower than ta4, and when the reading sensor temperature becomes equal to or higher than tb2, the motor to stop until the reading sensor temperature becomes equal to or lower than tb1, where tb1<tb2<ta1<ta2<ta3<ta4<ta6, and x1<x2.