Final Halftone Count

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If the halftone line count is 55 lines-per-inch (lpi) on the film positive, the final print will be less than 55 lpi. This is due to the mesh being stretched from its static tension to the dynamic tension as the squeegee moves the mesh down to the substrate. The higher the off-contact – the lower the lpi will be when printed. Thus, you may be able to increase the lpi on the film and not have a moiré problem in the final print. This negates the myth of placing the film on the substrate to be printed and observing moiré.