A paper sheet storage mechanism (e.g., a banknote storage mechanism 32) is provided with a pressing unit (e.g., pressing plate 46) which advances into a storage bag (e.g., banknote storage bag 34) held by a holding unit (e.g., holding member 36) and presses a portion of the storage bag from inside toward a placement unit (e.g., stage 40), thereby bringing a portion of the storage bag placed on the placement unit into a state in which paper sheets are stackable thereon. Before paper sheets are sent into the storage bag, the pressing unit is caused to advance into the storage bag and press the portion of the storage bag toward the placement unit.

An automatic stack feeder having a moveable stack or product guide is disclosed. The automatic stack feeder may be configured to receive a stack of articles and a container enclosing a stack of articles. To ensure the stack of articles is properly supported following unloading from the container, the stack guide is moveable between a first and a second position, wherein the stack guide is in contact with the stack of articles while in the first position, and not in contact with the stack when in the second position.