As far as I know, on the older models (C7000), the Creo was the only RIP able to handle transparencies, the other two RIPs from Fiery as well as their own IC-601 RIP weren't able to do so. Maybe the Fiery sometimes really works depending on luck, never had the chance to try it. The IC-601 definitely won't do it. Maybe things have changed in the meanwhile since our machine is already 4 years old.