Hi. i just bought some transperancy film from a silk screen supplier. it is "clear inkjet water proof" film. it is a little cloudy not 100% clear. i just used it with some "dual-cure emulsion" the blue kind that i had to mix with this little bottle of powder to activate it. now i just burnt a coated screen with the two minute burn time test and figured by the screen i needed to burn the image for 5 minute. so i taped an image of "lefty frizzell" on another already coated screen and burnt it for 5 minutes. the image came out ok maybe could have burnt it another minute or so for the fine detail to stay , but over all ok. now some of the emulsion was running where the image wasnt , so maybe i did something wrong like over coat my screen maybe?? or didnt burn it long enough??? well my real question is the transperancy film left an outline where it was, basically it was kind of blocking the light from passing through it so i now have an image with a rectangle frame from where the transperancy was . also the scotch tape i used to tape the film to my screen blocked the light from going through as well??? i am very very new to this in fact this is the first screens i burnt in like 5 years so basically forgot all i knew and startuing from scratch. please help!!!! i am using a 500 watt halogen light with the glass uv filter glass taken off and had it about 2 feet from the screen when i burnt it. what do u think is the problem given all the info ?? is it just the transperancy film being too cloudy??? i mean i did buy it from a supplier so....
Don't coat your screens too thick with a halogen light source. If your emulsion is running it may be underexposed. Sometimes slightly less exposure allows more detail- more small holes to open up.
I get that film edge shadow with my screens also, it may happen with a high resolution dual-cure emulsion, just have to tape it up. It doesn't happen for me when I use qtx or chromablue.
Many people think that they are exposing their screen long enough. Odds are they are not, I have a 6,000 watt bulb in my exposure unit, it takes about 5 minutes to burn a 305 mesh screen. Sometimes I can go shorter. I have the same film you have and use it with no problems. It could be you have too much emulsion on your screen but you may need to do some test. It will take time and screens but it would be worth it in the long run. If you don't have a exposure calculator make gradient box from black to white about 1/2 inch tall 2 inches wide, print at about 50 dpi and burn it at 10 or 15 minutes with the next screen you burn. Put it at the top or bottom of the screen out of the way of the print. When you expose your screen see how much of the dot pattern washed out, if all of the dots washed out and some of the say 50% black washed out too much increase your time, if some of the say 10% dots did not wash out decrease your time. If you do this with every screen for a while you should find a good measurement for you times. They will vary with each different mesh. An exposure calculator would be the best thing to use but this may help.
I have one of these boxes on every film I burn, I include it with my cropmarks, it is a good tell tell sign of how my screen burned.
Good luck.
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Mike
If you dig ditches be the best ditch digger you can be.
problems with transparency!!!!! 
