1. An image processing device comprising: an acceptance section that accepts image data to be processed; an information acquisition section that acquires plural pieces of information relevant to copy-restriction images and corresponding to plural kinds of copying devices configured to detect corresponding copy-restriction images, a target image being prevented from copying when a given piece of the information corresponding to a given kind of the copying devices and embedded in the target image is detected by the given kind of the copying devices; a generating section that generates a formation-target image by embedding, in the image data, the copy-restriction images corresponding to the plural piece of information acquired by the information acquisition section; and an output section that outputs the formation-target image generated by the generating section.