Print image in transparency, with associated screens colored

Hello to the community .. I ask if anyone knows how to use DraftSight well, since I have a problem, I can not print color screens on a raster image (such as geological map)! Can someone HELP ME! Also I leave my e-mail geobevacqua@libero.it, so we can get in touch and we can send you also the file with that image, to see if we can solve the problem.! thanks