An image processing device provided with an acquiring unit and a generating unit. The acquiring unit acquires invisible image data of an invisible image subject to forming on a recording medium with invisible coloring material and acquires source image data of a source image subject to forming on the...http://www.google.se/patents/US8120819?utm_source=gb-gplus-sharePatent US8120819 - Image processing device and image forming device for generating corrected image data for a source image according to absorption wavelength characteristics of invisible coloring material
