PURPOSE: To count the fare easily by setting in advance the using fare of the copying machine and the additional device by point number, adding it and collecting every use of the copying machine, and counting the using fare from the collection counted point number.

CONSTITUTION: In the using mode discriminating circuit 1, the point number is set in advance in every addtional device or the copying machine body. From the copying machine or the respective additional device, is inputted a signal in the using mode discriminating circuit 1 every use thereof, so that the point number is generated every time of input, outputted to the adder mechanism 2, the added point number is memorized in the memory circuit 3, and the memorized point number in the memory circuit 3 is displayed on the display portion 4 such as counter. Accordingly, the using fare can be counted easily from the display of the display portion 4.