If, as an example, you are printing with .067” polymer plates mounted with a 20 mil tape: on the edges of the web, if substrate width permits, have a 1/8” wide rubber plate gauging .068-.069” and mount around the cylinder with the same tape. Since rubber is compressible as opposed to polymer, this will create a cushion. Do not forget that if you want to use this method (commonly called “tiretracks”), remember that you will have to use it on all decks. If one deck is allowed to bang on the central drum, then the banding will still happen. Other stuff I have seen causing banding is a pulsating ink pump.
__________________
Luc St-Pierre
Prepress and Color Management Director
|
