We use an Epson Stylus 7600 (inkjet) for our film positives. The films print out great, but the black ink most times will come off the film when we burn screens, which does not allow us to keep the films on file & re-use. Anyone have an idea of some type of coating that can be applied? We've tried numerous things like letting the positives sit 24 hrs, dehumidifier, letting coated screens sit longer before burning, etc. Nothing as worked.