Abstract: A printing apparatus having almost the same scale and function as printing apparatuses the usable maximum paper size of which is equivalent to A-4 size can print an image on a paper the size of which is larger than A-4 as necessary. A printing mechanism section (101) and a paper feed mechanism section (180) print an image according to printing data on one side of a paper which can be an expansion printing paper folded once or more times and developable after printing. The paper feed mechanism section (180) reverses a paper and feeds the reversed paper to the printing mechanism section (101). By using a printing mode selecting function of a printer driver (410), a predetermined printing mode is selected from printing modes in which the image is printed in different printing forms on the paper.