Sales data processing apparatus

1 . A sales data processing apparatus comprising:

a first table on which an item is placeable;

a mounting table including a mounting plate and columnar supports sandwiching the first table and on which the mounting plate is disposed above the first table;

a first display device that is disposed on the mounting plate and includes a display surface facing a first direction;

a first reading device configured to read a symbol on an item, disposed on the mounting plate adjacent to the first display device, and facing the first direction;

a second display device that is disposed on the mounting plate and includes a display surface facing a second direction opposite to the first direction;

a second reading device configured to read a symbol on an item, disposed on the mounting plate adjacent to the second display device, and facing the second direction; and

a moving mechanism that enables the columnar supports to move in the first direction and the second direction with respect to the first table.

2 . The sales data processing apparatus according to claim 1 , further comprising:

at least one bag hanger on which a bag is hangable, the at least one bag hanger including vertical bars extending substantially perpendicularly from the first table and a horizontal bar supported by the vertical bars; and

a second table supported by the bag hanger between the first table and the mounting plate of the mounting table.

3 . The sales data processing apparatus according to claim 2 , wherein

the at least one bag hanger comprises multiple bag hangers, and

the second table is supported by the multiple bag hangers.

4 . The sales data processing apparatus according to claim 2 , wherein

the second table is rotatable about a rotational axis to a substantially vertical position, the rotational axis being substantially parallel to the first direction.

5 . The sales data processing apparatus according to claim 2 , wherein the second table includes a first plate and a second plate that are stacked and slidable relative to each other.

6 . The sales data processing apparatus according to claim 2 , wherein the second table has a groove along which a handle of a bag can be placed.

7 . The sales data processing apparatus according to claim 6 , wherein

the second table has a recess at an end of the groove through which the handle of the bag passes.

8 . The sales data processing apparatus according to claim 2 , wherein

the at least one bag hanger includes a support table that supports the second table substantially parallel to the first table.

9 . The sales data processing apparatus according to claim 2 , further comprising:

a third table facing the second table between the first table and the mounting plate of the mounting table, wherein

the at least one bag hanger comprises a first bag hanger that supports the second table and a second bag hanger that supports the third table.

10 . The sales data processing apparatus according to claim 2 , wherein the at least one bag hanger further includes a hook that is supported by the vertical bars and on which the bag is hangable.

11 . The sales data processing apparatus according to claim 2 , wherein

the first table includes a top plate, and

the vertical bars are disposed in corners of the top plate and arranged along the first direction.

12 . The sales data processing apparatus according to claim 1 , wherein

upon receiving a switching operation, the sales data processing apparatus switches from a first mode in which a customer performs both an item registration process for registering an item for purchase and a payment process of making a payment for the registered item, to a second mode in which both the customer and a store clerk can perform the item registration process and the customer performs the payment process.

13 . The sales data processing apparatus according to claim 12 , wherein

the sales data processing apparatus is switchable to: a third mode in which the store clerk performs the item registration process and the payment process, and a fourth mode in which the store clerk performs the item registration process and the customer performs the payment process.

14 . The sales data processing apparatus according to claim 1 , further comprising:

a side table on which an item is placeable; and

an automatic change machine facing the first direction, wherein

the side table and the automatic change machine are arranged to face each other across the first table, and

one of the columnar supports extends between the first table and the side table, and another of the columnar supports extends between the first table and the automatic change machine.

15 . The sales data processing apparatus according to claim 1 , further comprising:

a handy scanner that is disposed on a side of the mounting table in a direction orthogonal to the first direction.

16 . The sales data processing apparatus according to claim 1 , wherein

each of the columnar supports has a plate shape and extends along the first direction and a vertical direction perpendicular to the first direction.

17 . The sales data processing apparatus according to claim 1 , wherein

the first table includes a top plate and a weight scale for measuring a weight of an item placed on the top plate.

18 . The sales data processing apparatus according to claim 17 , further comprising:

a processor configured to compare the weight of the item measured by the weight scale with a weight of the item registered in an item master.

19 . The sales data processing apparatus according to claim 1 , further comprising:

at least one bag hanger on which a bag is hangable, the at least one bag hanger including vertical bars extending substantially perpendicularly from the first table and a horizontal bar supported by the vertical bars;

a second table supported by the bag hanger between the first table and the mounting plate of the mounting table; and

a moving mechanism that enables the supports to move in the first direction and the second direction.