Quote:
Originally Posted by Luc St-Pierre
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.
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Hi Luc,
I think this a is very useful tip. Infact one of my customer has just installed W& H miraflex and facing this bouncing issue in many solid jobs. On your suggestion i have a small question that if i use rubber plate around plate sleeve it will get in contact with anilox. will it damage anilox?? and second if i use this rubber plate on all deck (all colors) and printing film material this tyretrack line creates a pick on the edge of winded roll and creates problems for winding.
Can you also explain how does ink pump created banding.
And what should be the standard DOT gain for flexo. Meaning if my input file has 50% dot what should come out of print.
Regards
Akash
AGFA INDIA
