Topping system of pizza disc for automatic pizza preparation machines

1) Topping system (22) of pizza discs for automatic pizza preparation machines, comprising a plurality of dispensing cylinders (23, 24, 25, 26), each containing at least one ingredient which is usable as a topping for at least one pizza disc (D) and is deliverable by dropping onto the latter, characterized by the fact that it comprises positioning means (27) which are arranged inferiorly to said dispensing cylinders (23, 24, 25, 26) and are adapted to position said pizza disc (D) at least at the point where each of said dispensing cylinders (23, 24, 25, 26) is located, said dispensing cylinders (23, 24, 25, 26) being arranged parallel to each other around at least one substantially vertical common central axis (A).