Roller streaks in Cyan Unit of Mitsubishi L-750S heat set web offset press

Discussion in 'Web-Presses' started by Puneet Aggarwal, Oct 22, 2008.

  1. Puneet Aggarwal

    Puneet Aggarwal New Member

    Joined:
    Oct 2008
    Messages:
    1
    Location:
    Faridabad, India
    We are facing problem of roller streaks in Cyan unit(both upper & lower side) on our 1996 model Mitsubishi L-750S Heat set machine. This problem is more prominent in highlight area & increased speed beyond 15000iph. Press has Dahlgren dampening system. All roller were changed 1 month back only.
    Please help!:(
     
  2. veejay18

    veejay18 Member

    Joined:
    Dec 2008
    Messages:
    11
    Location:
    India
    I believe L750s is double circumference blanket press, can you specify the exact location of streaks is it following

    1 Near gripper area
    2 In the middle portion
    3 alternate copies or all copies
     
  3. Penguin1100

    Penguin1100 Member

    Joined:
    Apr 2009
    Messages:
    7
    Location:
    canada
    had this issue before ....try lowering roller strips of form rollers to plate and oscilators ...also try to back off one of the form rollers ....depends how far back your roller line shows up .... you will have to measure the roller circumfrance to determine which one is causing the problem
     
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