| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide service that is started to be provided upon submission of a scheduled billing amount, and to discount the billing amount depending on the number of output media that has been output in response to the provision of the service; and charge an amount of bill corresponding to the actual number of output number without exceeding the scheduled billing amount.SOLUTION: An image forming apparatus includes a processing control unit 14 that controls a display control unit 122 not to display a stop button while the amount of money calculated by multiplying a regular unit price by the number of output copies in a copying processing unit 13 exceeds the amount of money calculated by multiplying a discount unit price by the number of output copies at the start of discount, and display the stop button again when the number of output copies reaches the number of output copies at the start of discount.</p> |
