1. An image processing device comprising: an image inputting unit that is connected to an image data storing device that stores image data, and that inputs a selected of the image data stored by the image data storing device, selected based on a user's input to an image data storing unit; a storing unit that stores at least one form data and a plurality of image data; an image combining unit that combines the selected image data and a selected of the form data, selected based on the user's input to the image data storing unit, to generate a combined output image, wherein the image combining unit includes a combined-image outputting unit that, every time when one page of the combined output image is generated by the image combining unit, outputs the generated one page of the combined output image out of the combined output image.