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JV33 head issues

Discussion in 'Mimaki' started by LaserMan, Aug 21, 2012.

  1. LaserMan

    LaserMan Member

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    Feb 15, 2012
    We've had the 33 for about 3 years now. Never had any issues at all.


    Yesterday, there was a media jam (Oracle 651 vinyl). Since then, the test draw shows that the Magenta (on the left side) is missing most of the nozzles. The top and bottom 1/3's are missing. Only a little bit in the middle shots. I've done the hard clean, wiped the head with a lint free swab and cleaning solution. I've run several nozzle washs (including the max 99 minutes) and i've also tried teh ink fill up.

    The test draw never changes. What do you all recommend? Is it a bad head and needs to be replaced? Other methods of cleaning that i have missed?

    Thanks
     
    Tags:
  2. VanderJ

    VanderJ Merchant Member - Printer Parts and Sevice

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    Aug 2, 2011
    Denver, CO
    If it was a really hard head strike you may have knocked some things loose. Get down and look at the bottom of the head from the side. Make sure that it is parallel with the platen. If not, the cap top won't seal with the head properly and no ink will be sucked down. Also, check the ribbon cable that connects to the head from the slider board. It may have come loose which might cause specific nozzles to stop firing but it is rare. Finally, assuming your cap top, pump and dampers are functioning properly, I would try flushing the head with cleaning solution and a syringe. If you can see fluid coming out of the nozzles when you do the flush and it produces the same problem when you pop the head back in, most likely you have damaged the head, physically or electronically and will need to get a new head.
     
  3. signpost-boston

    signpost-boston Making America great, one sign at a time.

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    Jul 18, 2010
    Boston, Ma.
    you need to do a nozzle soak. for at least an hour.
     
  4. k.a.s.

    k.a.s. Very Active Member

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    NE ohio
    Pull vaccum through the head with a syringe.

    Kevin
     
  5. cisco01

    cisco01 New Member

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    Jan 10, 2010
    sterling, va
    Try acetone for 30 minutes.
     
  6. Masseria

    Masseria Member

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    Jul 23, 2012
    Solution in other thread was replacing cap station.
    hope that helps, wrote it in another thread.
     
  7. sha

    sha Member

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    Apr 1, 2009
    When dried acetone leave very fine powder inside of the head. Better not test your luck with acetone...
    Solution is probably cap replacement.

    Good luck
     
  8. bloobird0

    bloobird0 Member

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    Feb 8, 2010
    France
    you print on oracal 651? Is there any reason why? (it's aimed at cut vinyl, not as print vinyl).

    I sometimes print on 651 when I need to print black on a specific vinyl color but do your regularily do this?
     
  9. DustinD

    DustinD Merchant Member

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    Apr 27, 2012
    You might have bent the metal retainer on your head. Take a quick look at it. If you did you can remove it. I would also replace the cap on the mimaki's yearly. It's cheap.
     
  10. LaserMan

    LaserMan Member

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    Feb 15, 2012
    @bloobird0 - Yes, we print on 651. It's cheap and quality looks great.

    @DustinD - Thanks, I'll order a new cap station.
     
  11. bloobird0

    bloobird0 Member

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    Feb 8, 2010
    France
    cheaper than a 3651 for example? Lucky you ! :notworthy::smile:
     
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