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Can't pull ink through Black ink line

Discussion in 'Mutoh' started by SummitSignsandmore, Jun 3, 2019.

  1. SummitSignsandmore

    SummitSignsandmore Active Member

    605
    2
    18
    Jul 16, 2009
    PA
    What should I check if I cant pull ink through a line?

    I started to experience issue with printing black, I replaced the black dampers and I cannot prime the dampers?

    I did pull out a blue damper to see if my method was incorrect. But was able to properly syringe the blue thru.

    Any suggestions what to check?
     
    Last edited: Jun 3, 2019
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  2. RG

    RG Member

    495
    12
    18
    Dec 6, 2006
    South Mississippi
    Have you removed the cover and checked all of the black ink line for kinks? If the black ink line looks good, then maybe the needle that goes into the ink cartridge is stopped up. This is very rare, but I have heard of it happening. I think what you can do is to try to back-flush the black ink line. I'm not sure if you would need to pull the black ink cart or not. Hopefully, some one else here has done that before and will give some instructions.
     
  3. SummitSignsandmore

    SummitSignsandmore Active Member

    605
    2
    18
    Jul 16, 2009
    PA
    You maybe correct. I have all the covers removed and there are no kinks in the line. I can clearly see the black ink line from the cartridge is empty.

    How exactly do you backflush the line?
     
  4. RG

    RG Member

    495
    12
    18
    Dec 6, 2006
    South Mississippi
    If my 1204 ever has the same problem, I would remove both black dampers, plug-up one ink line that goes into one of the dampers, attach a syringe to the other black ink line and gently push. If nothing seems to move, I'd push harder. I'd probably remove the black ink cart first and put several paper towels in it's place to catch any ink that squirts out.
     
  5. SummitSignsandmore

    SummitSignsandmore Active Member

    605
    2
    18
    Jul 16, 2009
    PA
    It seem I was able to get the black to free up and now I can pull ink thru the installed dampers. To be sure I was making the right steps I also decided to change the blue dampers as well. When I stopped last night I was still not getting proper output from the cyan and the black. However the dampers (I changed) aren't completely full.

    By running ink can I fill the damper from this point?
    Or am I priming the dampers incorrectly

    I'm trying to run solid cyan right now and I'm getting a yellow output? The cyan line looks blue...
    Also The black I run has a magenta output.
     

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  6. RG

    RG Member

    495
    12
    18
    Dec 6, 2006
    South Mississippi
    Dampers are not suppose to be completely full. About half full is correct for dampers. Running a "Little Charge" should properly send ink all the way from ink carts to the print head. Sounds like you have some cross-contamination. Printing a large block of black and a large block of cyan should clear that up.
     
  7. SummitSignsandmore

    SummitSignsandmore Active Member

    605
    2
    18
    Jul 16, 2009
    PA
    RG I sincerely appreciate you devotion to my issue. The little charge did the trick, I cannot thank you enough. The cross contamination is gone and my test prints look PERFECT again!
     
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