Medium storage and medium processing device

A medium storage comprising:

• a casing including an internal storage space for storing a paper leaf-shaped medium in a state stacked along a stacking direction;
• a discharge section for discharging the medium into the storage space;
• a partition plate that partitions an interior of the storage space into a first storage space at a first side thereof, the first side being a side opposite to the stacking direction, and a second storage space at a second side, which is a side of the stacking direction, the partition plate being provided with a placement location for placing the medium on a placement face that is a surface on the second side thereof;
• a partition plate displacement section that displaces the partition plate between a first position that causes the medium discharged from the discharge section to progress into the first storage space, and a second position that is positioned further toward the first side than the first position and that causes the medium discharged from the discharge section to progress into the second storage space;
• a rotating member that includes one or more resiliently deformable resilient member extending in a direction away from a center axis disposed along a width direction orthogonal to the stacking direction, and that rotates about the center axis so as to assist stacking of the medium discharged into the storage space;
• a first restriction member that is provided at the first side of the partition plate on the discharge section side of the placement location, and that restricts a movement range toward the discharge section side of the medium placed on the placement location;
• and
• a second restriction member that is provided at the first side of the partition plate further toward the discharge section side than the first restriction member, and that restricts a movement range toward the discharge section side of the medium placed on the placement location.