Claims:1. A paper sheet handling apparatus comprising:
a base module; and
an extension module connected to the base module,
wherein
the base module includes
a feeding unit that receives a paper sheet inside the base module;
a first transport unit that transports the paper sheet fed by the feeding unit;
a recognition unit that recognizes the paper sheet transported by the first transport unit;
a plurality of first-type stacking units that stack paper sheets, the plurality of first-type stacking units being arranged along a first direction and each having an opening through which a stacked paper sheet is removable; and
a control unit that controls transport of the paper sheet based on a recognition result obtained by the recognition unit, and
the extension module includes
a second transport unit that receives the paper sheet discharged from the base module by the first transport unit, and transports the paper sheet; and
a plurality of second-type stacking units that stack paper sheets, the plurality of second-type stacking units being arranged along a second direction that is different from the first direction and each having an opening through which a stacked paper sheet is removable,
wherein the control unit performs control to transport the paper sheet to at least one of the plurality of first-type stacking units and the plurality of second-type stacking units.

2. The paper sheet handling apparatus as claimed in claim 1, wherein the first direction and the second direction are orthogonal to each other.

3. The paper sheet handling apparatus as claimed in claim 2, wherein the first direction is a horizontal direction and the second direction is a vertical direction.

4. The paper sheet handling apparatus as claimed in claim 3, wherein the plurality of first-type stacking units and the plurality of second-type stacking units are arranged in a substantially L-shaped configuration.

5. The paper sheet handling apparatus as claimed in claim 4, wherein the base module further includes a display unit arranged at a position above the plurality of first-type stacking units, and the position overlaps with a substantially central position between stacking units at either end of the plurality of first-type stacking units.

6. The paper sheet handling apparatus as claimed in any one of claims 1 to 5, wherein the extension module has, on a side that is opposite of a side to which the base module is connected, a cutout portion through which a portion of the paper sheet stacked in a second-type stacking unit is exposed.

7. The paper sheet handling apparatus as claimed in any one of claims 1 to 6,
the extension module is a first extension module, and further comprising a second extension module that is connected to the first extension module, wherein
the second extension module includes
a third transport unit that receives the paper sheet, which has been received inside the first extension module from the base module and discharged from a surface that is different from a surface to which the base module is connected, and transports the paper sheet; and
a plurality of third stacking units that stack paper sheets, the plurality of third stacking units being arranged along the second direction and each having an opening through which a stacked paper sheet is removable, and
the control unit performs control to transport the paper sheet to at least one of the plurality of first-type stacking units, the plurality of second-type stacking units, and the plurality of third stacking units.

8. The paper sheet handling apparatus as claimed in any one of claims 1 to 6, wherein
each of the plurality of first-type stacking units includes a first stacking wheel that receives the paper sheet transported by the first transport unit and aligns and stacks a received banknote therein,
each of the plurality of second-type stacking units including a second stacking wheel that receives the paper sheet transported by the second transport unit and aligns and stacks a received banknote therein, and wherein
an external diameter of the second stacking wheel being less than an external diameter of the first stacking wheel.

9. The paper sheet handling apparatus as claimed in any one of claims 1 to 8, wherein an upper part of the opening of each of the plurality of first-type stacking units slopes downwardly from a front surface of the apparatus towards a back surface thereof.

10. The paper sheet handling apparatus as claimed in any one of claims 1 to 9, wherein
the first transport unit includes a first diverter arranged at a position that is downstream of the recognition unit in a transport direction, and
the first diverter diverts a transport direction of the paper sheet to a transport direction for discharging the paper sheet from the base module and onward toward the extension module or to a transport direction for transporting the paper sheet toward the plurality of first-type stacking units.

11. The paper sheet handling apparatus as claimed in claim 10, wherein
the second transport unit includes a second diverter that diverts a transport direction of the paper sheet taken inside the extension module from the base module, and
the second diverter diverts the transport direction to a transport direction for discharging the paper sheet from a surface that is different from a surface to which the base module is connected or to a transport direction for transporting the paper sheet toward the second-type stacking units.

12. The paper sheet handling apparatus as claimed in any one of claims 1 to 11, wherein each of the plurality of second-type stacking units stacks the paper sheet in a standing state in which a paper sheet surface is inclined with respect to a horizontal plane.

13. The paper sheet handling apparatus as claimed in claim 12, wherein each of the plurality of second-type stacking units stacks the paper sheet in the standing state in which the paper sheet surface is inclined by 45 degrees or more with respect to the horizontal plane.

14. The paper sheet handling apparatus as claimed in claim 13, wherein an angle of inclination of the paper sheet stacked in each of the plurality of first-type stacking units with respect to the horizontal plane is less than an angle of inclination of the paper sheet stacked in each of the plurality of second-type stacking units.

15. The paper sheet handling apparatus as claimed in any one of claims 1 to 14, wherein a maximum number of paper sheets that can be stacked in each of the plurality of second-type stacking units is smaller than a maximum number of the paper sheets that can be stacked in each of the plurality of first-type stacking units.

16. The paper sheet handling apparatus as claimed in claim 15, wherein the maximum number of the paper sheets that can be stacked in each of the plurality of second-type stacking units is equal to a divisor of the maximum number of the paper sheets that can be stacked in each of the plurality of first-type stacking units.

17. The paper sheet handling apparatus as claimed in claim 15, wherein the maximum number of the paper sheets that can be stacked in each of the plurality of second-type stacking units is one fourth of the maximum number of the paper sheets that can be stacked in each of the plurality of first-type stacking units.

18. The paper sheet handling apparatus as claimed in claim 17, wherein the extension module includes four second-type stacking units.

19. The paper sheet handling apparatus as claimed in claim 15, wherein
a maximum number of the paper sheets that can be stacked in the extension module is equal to the maximum number of the paper sheets that can be stacked in each of the plurality of first-type stacking units, and
the control unit uses the extension module as one of the plurality of first-type stacking units when controlling transport of the paper sheet.

20. The paper sheet handling apparatus as claimed in any one of claims 1 to 19, wherein
the base module further includes a reject unit that stacks a reject banknote, and wherein,
the reject unit is arranged upstream both the plurality of first-type stacking units and the plurality of second-type stacking units along a transport direction of the paper sheet.

21. The paper sheet handling apparatus as claimed in claim 20, wherein a housing of the base module includes a substantially horizontal planar surface located between the feeding unit and the reject unit.
, Description:AS ATTACHED