Image processing method, image processing system, and image forming apparatus

摘要

An image processing system according to the invention comprises a valuable information processing apparatus which manages valuable information equivalent to money, and an image forming apparatus which is connected to the valuable information processing apparatus and forms an image according to the valuable information. The image forming apparatus stores read or input image data into image data memory means. Then, image data stored in the image data memory means is invalidated when the valuable information to be managed by the valuable information processing apparatus fulfills a predetermined condition.