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Need Help Mimaki CJV150 causes problems and speckles around the edge of prints / over spray

Discussion in 'Mimaki' started by Thorsten, Sep 4, 2020.

  1. Thorsten

    Thorsten Lichtfieber e.K. / Germany

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    Nov 26, 2017
    Germany
    Mimaki CJV150 causes problems and creates over spray at the edge of the print.
    Even with repeated cleaning and a higher print resolution (See picture below) , I cannot fix the problem.
    The digital printer has not yet printed very much and is only 2 years old.
    I have the impression that the speckles appear particularly strong with mixed colors. Magenta in particular.
    Due to Covit19 I would like to avoid consulting a Mimaki technician. This is very expensive here in Germany. Unfortunately, we have also had extreme losses in sales in the last few months ....... like almost all of us ;-(
    That is why I am particularly grateful for tips and suggested solutions.
    All of you many greats from Cologne / Germany

    Thorsten



    Mimaki2.jpg
     

    Attached Files:

  2. Greg Kelm

    Greg Kelm Member

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    Aug 20, 2019
    Rancho Cucamonga
    Head is too high
     
    • Like Like x 1
  3. karst41

    karst41 Member

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    Nov 3, 2010
    Stone Mountain, GA
    I had this issue many years ago and agree
    Heads/Carriage is too High.
     
  4. Thorsten

    Thorsten Lichtfieber e.K. / Germany

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    Nov 26, 2017
    Germany
    Hello and thank you for your information! The printhead lever is at its lowest setting.
    Can I adjust it differently? Are there any settings in the menu?
     
  5. Commando

    Commando Member

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    Oct 11, 2013
    Tennessee
    Could also be static electricity. You could try grounding the printer.
     
  6. Solventinkjet

    Solventinkjet DIY Printer Fixing Guide

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    Aug 2, 2011
    Denver, CO
    Post a nozzle check. Either the head is deflecting a lot, the room environment is not ideal, or the head is starting to fail.
     
  7. hand851

    hand851 Roland Mutoh & Mimaki inks digiprint-parts.com

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    Nov 22, 2010
    Columbus, Ohio
    Ageree lets see a test print of the nozzles.
     
  8. Thorsten

    Thorsten Lichtfieber e.K. / Germany

    6
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    Nov 26, 2017
    Germany
    Hello and thank you for your help!
    I'll get back to you a little late because I was sick.
    Attached is a photo of the test print. On the right side you can see the test print after starting. On the left side the test image after "normal cleaning"
    It looks like the cyan is getting into the magenta ?!
    In principle, the colors of my profiles also appear significantly darker when printed than before.

    Thank you in advance and please stay healthy!
     

    Attached Files:

  9. Solventinkjet

    Solventinkjet DIY Printer Fixing Guide

    4,190
    784
    113
    Aug 2, 2011
    Denver, CO
    That cyan getting into the magenta is what they call cross contamination. It usually happens when the pump is partially clogged or the cap isn't emptying properly. Unfortunately, it can also happen when the membrane inside the head that separates the channels breaks. The fact that the magenta is also spraying could be a sign of the membrane breaking as well. Before getting a new head, how old are the cap tops? If they are older than a year, I would replace them and flush the pump tubes while you are in there.
     
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