A printer system includes a printer and a printing consumable detachably mounted on the printer. Each of the piston member includes a hollow chamber with a driving shaft, a movable magnet, and a coil therein, wherein the driving shafts are adapted to move the magnets back and forth through the coils and thereby induce an electric current within the coils. The second semiconductor chip is installed on the first semiconductor chip and is configured to integrate a power circuit to receive an external power supply and to supply an electric power to the first semiconductor chip based on the external power supply.