1. A print control apparatus comprising: means for producing a reproduction checking image that includes a non-discoloring image to be output as an image having the same color as the non-discoloring image when copied, and a discoloring image to be output as an image having a color different from that of the discoloring image when copied; and control means for causing a printing device to print in a predetermined color the reproduction checking image produced by said reproduction checking image producing means.