Revisiting this all-too-excellent idea today and have a few thoughts. So with a 600 lp/in screen of parallel lines printed on an ≈18.5"x23" paper, I have a master from which I can reproduce onto 4x5" film the appropriate line screens; 2750 lp/", 2400 lp/" and 2000 lp/". Furthermore, this master would allow one to make
Right...exactly...a single master, generated at the native resolution of the imagesetter (600 lp/in works well for 2400 and 3600 dpi imagesetters). 3 different reproduction scales to get your rulings for imaging. BTW--Some can also image directly onto RC paper...it should support that resolution. And you have a reflective master to work with, instead of having to rig up a big backlight.