An image processing apparatus is provided which is capable of adding an additional image having a high effect of discouragement to an input image when the input image is subjected to image processing, and requires less costs and less time in parts procurement for repair work. The image processing apparatus includes image information input portion that inputs image information, and an image adding portion that adds given visible additional image information for identifying the image processing apparatus to image information input by the image information input portion. The image adding portion has a determining portion that determines on whether or not to add the given additional image information to the image information input by the image information input portion.