| 摘要 |
There is provided an image forming apparatus which can correctly recognize a function substantially used by a user. The image forming apparatus is provided with an image input portion for reading a read original document as image data, an image output portion for forming an output image on the basis of inputted image data and prints it out, a discrimination portion for discriminating whether the output image formed by the image output portion is formed on the basis of the image data read by the image input portion, a billing amount calculation portion for calculating a billing amount on the basis of a discrimination result of the discrimination portion, and a system control portion for controlling the entire operation of the image forming apparatus.
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