Screen E-Book (.PDF) - MacDermid Autotype

The explanation is simple. The printer has pushed the boundaries of the ink and the stencilbut has failed to push the boundaries of the mesh. You can’t print fine lines with acoarse mesh! The on-off sawtoothing comes about when the edge of the line starts gettingtrapped between a mesh fibre and the edge of the stencil.Here’s an idealised image of an inappropriate mesh (a 120/20 mesh trying to print 40µmlines/spaces)Trying to print with toolarge a mesh diameterThe mesh simply gets in the way and stops ink flowing properly to the substrate. Highersqueegee pressure can help a little, but fundamentally there’s only one thing you can do,which is go to the finest stainless mesh you can find. Here’s a simulation using a 120/13mesh:Thinner mesh gives amuch higher probabilityof success89