Image forming device forming a visible image on a medium containing detectable substances

摘要

An image processing device includes a generating unit and an output unit. The generating unit generates image data on the basis of which an image forming unit forms a visible image on a recording medium containing detectable substances using only a coloring material having a spectral reflection factor that is different in a particular wavelength range from a spectral reflection factor that the detectable substances have by a predetermined threshold or more. The output unit outputs the image data generated by the generating unit to the image forming unit.