I am having a sawtooth/stairstep edge problem that I just can't figure out. I have searched this forum and the internet and I am not finding a definitive answer.
Here is my situation. I am just doing fairly simple one color designs. I am using 110 white mesh screens. The last few screens I exposed with ChromaBlue emulsion, but I have tried Ulano QTX and had the same results. I am exposing my screen with a home setup, one 500W halogen above my screen with a piece of glass on top of my film positive that is taped to the shirt side of the screen and a piece of foam covered in black fabric on the squeegee side. I am creating my artwork in Illustrator and printing onto inkjet film positives with an Epson 1100. The sawtoothing is most noticeable on the straight edges of my designs. Also, when I use International Coatings Matte Black ink the jagged edges are much more profound than when I use Union Maxopake ink.
Any suggestions would be greatly appreciated!