An IOT controller of an image formation device is provided with an NvRAM. Correction coefficients relating to various parameters, which are specified for each of paper types in advance, are stored in the NvRAM. The NvRAM is provided with a user setting region, and when it is desired to form an image at an unusual paper, parameters of this paper can be inputted by operation of a control panel. When image formation is to be implemented, the IOT controller, after selection of a paper type at the control panel, reads out correction coefficients of the parameters relating to the selected paper type from the NvRAM, implements transfer processing in accordance with these correction coefficients, and forms a high-quality image.