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Mimaki JV33 smudging/streaking

Discussion in 'Mimaki' started by savagefire, Nov 7, 2012.

  1. savagefire

    savagefire New Member

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    Nov 7, 2012
    We are having issues with our Mimaki JV33 leaving repeated streaks/smudges on media. We've tried different colour, pass and vacuum settings. Attached is a sample image of the issue. Does any have any solutions?
     

    Attached Files:

    Last edited by a moderator: Nov 7, 2012
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  2. SightLine

    SightLine Very Active Member

    Thats head strikes. The media is buckling or something.
     
  3. savagefire

    savagefire New Member

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    Nov 7, 2012
    possible causes? solutions? Maybe the vacuum isn't working right, how would I tell? Would the temp being too hot cause the vinyl to expand and ripple?
     
  4. 4R Graphics

    4R Graphics Active Member

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    Jan 28, 2008
    First off set the vacuum to the highest setting either at the printer or in the rip.

    Second when you put the printer into remote as soon as the rip is done ripping and it transfer the data to the printer if you are watching the printer you should beable to see the material actually get sucked down to the print platen.

    Third if you have what looks like waves in the material while it is on the printer then you have way to much heat and this is your problem. most material for the pre and print heaters should be 40c or less. I get buckle in the material around 40c on the print heater with Oracal 3640 and 3651.



    Heat will make the material buckle up for sure.

    Once you get this problem figured out you need to do a nozzle check. you may have destroyed the head especially if this has happened a few times.

    Good luck and i hope your head is not bad now.
     
  5. savagefire

    savagefire New Member

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    Nov 7, 2012
    Thanks. We will be trying out different heat settings.
     
  6. WI

    WI Member

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    Nov 7, 2012
    Looks like that might be a material issue. Did you recently change the plastic you're printing on? If you're using the same heat settings and new decal, that might cause it to buckle under the printhead. Also, depending on how it's stored you might have some kind of ovaling or flattening of the media in certain places, which could cause it to buckle up at regular intervals like that.
     
  7. J Hill Designs

    J Hill Designs Major Contributor

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    make sure its not 'tugging' off of the roll, IE roll out a few feet so its not tugging on a heavy roll...
     
  8. savagefire

    savagefire New Member

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    Nov 7, 2012
    Appears to have been a heat issue. With the heat settings too high it caused the vinyl to expand and ripple between the rollers. Possible started occurring because the humidity dropped with the arrival of winter.
     
  9. 4R Graphics

    4R Graphics Active Member

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    Jan 28, 2008
    So you got it fixed?

    If so glad to hear it.
    Is the print head still ok?
     
  10. savagefire

    savagefire New Member

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    Nov 7, 2012
    Have had no issues since lowering the temp. So I assume the print head is still ok also. Thanks.
     
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