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what could be causing my black head to be like this?

Discussion in 'Mimaki' started by gabagoo, Aug 7, 2013.

  1. gabagoo

    gabagoo Major Contributor

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    Oct 10, 2006
    Vaughan, Ontario
    Jv3 130 spII - I usually see this issue with the yellow head and a good nozzle wash seems to clean it out. Yesterday I remembered that last Friday I did not perform my weekly nozzle wash so decided to do it yesterday. I ran it for an hour. I did print yesterday with no issues with any of the heads.
    This morning I ran a test and my black head is firing about 60%. I ran a nozzle wash for 30 minutes and very little change. I ran another one for 50 minutes and again no real improvement, as you can see in my pic. I now have it on a nozzle wash with the main power shut off so it can sit indefinately.

    What do you suppose causes it to not fire properly especially when i ran a 60 minute cleaning the day before? I am baffled.
     

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  2. heyskull

    heyskull Very Active Member

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    Sep 2, 2007
    UK
    I reckon head cable or contamination where the head cable goes into the print head causing a malfunction or even the print head is dying.

    SC
     
  3. daveb

    daveb General Know-it-all

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    Feb 11, 2010
    Quincy, IL
    Usually meant it was time to change out or work on the capping station on ours. Not getting a good seal around the head, can dry out pretty quick. Had our JV3 for 8 years, nozzles dropping out were usually air leak somewhere.
     
  4. MikePro

    MikePro Major Contributor

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    Feb 3, 2010
    Racine, WI
    A crummy wiper blade can also contaminate the head.
     
  5. gabagoo

    gabagoo Major Contributor

    5,726
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    Oct 10, 2006
    Vaughan, Ontario
    This may be the culprit as 1 of my cyan cartridges is low and because it is a little slow at this time of year it has been this way for about a week now. Is there a way to force the machine to wipe?
     
  6. gabagoo

    gabagoo Major Contributor

    5,726
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    Oct 10, 2006
    Vaughan, Ontario
    well it must have been that low cyan cartridge preventing the wiper from doing its job. I swapped out cartridges and ran a 1 minute nozzle wash just so it would wipe the heads and my black is back.
     
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