IMAGE FORMING DEVICE

An image forming device enables a printing layout to be changed by intuitive operations and a printing image to be confirmed easily before printing, regardless of whether printing is single-sided or double-sided. A plurality of images that are of the same size as each other are displayed on a touch panel so as to be separated from each other. If two touch inputs simultaneously performed on first and second images are detected, and the distance between the first and second images that have been moved accompanying the movement of the individual touch positions respectively indicated by the two touch inputs has become equal to or less than a specified distance, then the image forming device generates a third image (440) in which the first and second images are arranged adjacently. Furthermore, the image forming device displays the third image (440) on the touch panel instead of the first and second images. The user combines the two images intuitively and easily. Because the images that have been combined are displayed on the touch panel, it is possible to easily check how the two images are to be combined and printed.