If a second detecting unit has detected an upper surface of a stack of sheets without a first detecting unit detecting the upper surface of the stack of sheets when a pickup roller is moved from a moved position to a pickup position, a control unit lifts a stacking plate by a first predetermined amount. If the pickup roller is moved from the moved position to the pickup position without the first detecting unit and the second detecting unit detecting the upper surface of the stack of sheets, the control unit lifts the stacking plate by a second predetermined amount greater than the first predetermined amount.