color bar scumming??

Discussion in 'Heidelberg Printing Presses' started by DI.PRO.GUY, Nov 4, 2009.

  1. DI.PRO.GUY

    DI.PRO.GUY Member

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    why dose this happen and how do i fix??
     
  2. exheidmech

    exheidmech Senior Member

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    What kind of press, paper, speed, are you running?
     
  3. DI.PRO.GUY

    DI.PRO.GUY Member

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    qmdi pro,,,speed 7spm,,14pt brightwhite cs2 cardstock...
    toyo med tack waterless ink..
     
  4. exheidmech

    exheidmech Senior Member

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    Sorry, I am a large press guy, Im sure you will get help in here though.
     
  5. mrheidelberg

    mrheidelberg Senior Member

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    So what exactly is happening......
    You say the colour bar is scumming, so i presume the job area is ok ??
     

  6. turbotom1052

    turbotom1052 Senior Member

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    you sure your not mistaking a slapping issue for scumming? slapping will usualy show itself more on the tail of a sheet than anywhere else. color bars are typically on the tail
     
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