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Horizontal streaks, sm102

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  • Horizontal streaks, sm102

    Hello dear collegues, what are the most common causes for horizontal streaks on the printed sheet for heidelberg speedmaster sm 102?
    Maybe someone have kinda cheat sheet on where to look first, second etc. for this particular press. Like "case-cause-solution"?

  • #2
    Hello Andrei83,


    Post a decent size picture of the problem that you see on the Printed Sheet.


    Regards, Alois

    Comment


    • #3
      CMYK Start printing IMG_20191007_142027.jpg

      Comment


      • #4
        if the image you posted is the entire sheet run in a landscape orientation then im not seeing a horizontal streak. I am however seeing a vertical streak. Please clarify.

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        • #5
          White field. There's grabs. The beginning of printing. The light bar is horizontal. IMG_20191007_170442.jpg

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          • #6
            is the black I see just a screen of black or is it a screen build with other colors too?

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            • #7
              Originally posted by turbotom1052 View Post
              is the black i see just a screen of black or is it a screen build with other colors too?
              cmyk

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              • #8
                Hello Andrei83,


                The white unprinted area is the "GRIP EDGE" of the sheet ?


                What are CMYK - Halftone % of the build ? and why are you using CMYK for a Black Image ?


                Mark on the next picture you post of the BLK (build) the - Horizontal Streaks that you see !


                Regards, Alois


                Comment


                • #9

                  The white unprinted area is the "GRIP EDGE" of the sheet ?

                  Yes.

                  It's not a black background. This is a special dark blue color.

                  Attached Files

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                  • #10
                    id begin by either putting on a new blanket and raising the water a bit, or at the very least swinging the blanket around along with new packing to see if the problem area moves.

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                    • #11
                      blanket New. Plate In the order.

                      Comment


                      • #12
                        Hello Andrei ,


                        Does this "Streak" appear any where else in the print area ?

                        Regards, Alois

                        Comment


                        • #13
                          check that your roller Oscillation is at Maximum

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                          • #14
                            Originally posted by Alois Senefelder View Post
                            Hello Andrei ,


                            Does this "Streak" appear any where else in the print area ?

                            Regards, Alois
                            On this plot, no.

                            Comment


                            • #15
                              Hello Andrei 83,


                              So, this Streak appears at the same - x mm measure- from the Grip Edge on every CMYK Press Unit ?


                              Have you printed a sheet of individual CMKY Colours ?


                              Regards, Alois

                              Comment

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