Heidelberg SM 74-4 Perfecting Problem

Discussion in 'Heidelberg Printing Presses' started by alphapressfl, Nov 1, 2016.

  1. alphapressfl

    alphapressfl Member

    Joined:
    Nov 2016
    Messages:
    42
    Location:
    orlando, florida
    we are having issues with marking on the press when in perfecting mode (see attachment). We've cleaned all cylinders and made sure hoses were blowing air. We are running on a gloss text. No idea what to do. Please help
     

    Attached Files:

  2. aqazi81

    aqazi81 Senior Member

    Joined:
    Oct 2009
    Messages:
    827
    Location:
    KARACHI PAKISTAN
    Are these marks coming before perfector or after? It looks similar to marks from transfer jackets.
     
  3. alphapressfl

    alphapressfl Member

    Joined:
    Nov 2016
    Messages:
    42
    Location:
    orlando, florida
    My staff is telling me that it is coming after perfector. Any ideas?
     

  4. mantman

    mantman Senior Member

    Joined:
    Nov 2015
    Messages:
    274
    Location:
    Greece
    Use dryer liquid/paste in ink so ink dries faster on sheet and maybe go slower to avoid marking?
    Else try a stop with impression on and check sheet travel after perfector, also move or put any or all sheet guides in case sheet buckles.
    Use all color impressions in case sheet "hits" blanket.

    Unless of course you all tried that :) just my piece of mind
     
Loading...