FIGS. 5A and 5B show examples of images including a figure set to ???OP=true, OPM=1.??? Like the image 100, an image 300 shown in FIG. 5A is an image in which a FIG. 101 is allocated so as to overlap in its upper part with a FIG. 102, wherein the overprint attribute of the FIG. 102 is set to ???OP=true, OPM=1.??? In this case, a portion 310 where both figures overlap results in the color of ???C:1