Paper stacking apparatus

A bank bill input and output machine comprising:

• a plurality of stacking boxes, including a money input box accommodating a bank bill which is not used for recycle;
• a recycle box accommodating a bank bill which is used for recycle in a horizontal direction;
• a bank bill inlet to which said bank bill enters;
• a movable push plate installed within said stacking and accommodating space of said money input box;
• and
• a control portion controlling a position of said movable push plate, wherein:
• said plurality of stacking boxes are provided with a bank bill stacking and accommodating space accommodating a bank bill in inner portions of said stacking boxes,
• the bank bill stacking and accommodating space of said money input box is formed diagonally with respect to said money input box in such a manner as to become lower in accordance that a bottom face of said bank bill stacking and accommodating space is away from a bank bill carry-in side,
• the bank bill stacking and accommodating space of said recycle box is formed horizontally with respect to said recycle box,
• said money input box and said recycle box have a common casing outer shape and are attachable so as to be replaceable with each other,
• the money input box further comprises a memory means for storing a stack number count information corresponding to the number of bank bills accommodated in said stacking and accommodating space, and a thickness information per one of said bank bills,
• said control portion detects a stack width of stacked bank bills on the basis of the count information and the thickness information per one bank bill stored in said memory means,
• said control portion calculates a stack width of bank bills accommodated in said stacking and accommodating portion, on the basis of a product of the count information and the thickness information per one bank bill stored in said memory means, and
• said control portion calculates a moving distance of said movable push plate and executes a control of moving said push plate by subtracting said stack width from the accommodation width of said stacking and accommodating space.