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Mutoh VJ-1604 printing short on length of print

Discussion in 'Mutoh' started by Alandofcastles, Feb 11, 2020.

mutoh vj-1604 short print length on length

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  1. Alandofcastles

    Alandofcastles New Member

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    Apr 27, 2017
    Liverpool
    Hi All

    I have a Mutoh VJ-1604 and it is printing short in length, width is spot on. ie banner 72" long x 36" wide comes out around 71.5" it has done this since i got it but never been a problem but now i need it to be precise. I am printing on a heavy material 610gsm pvc also usuing Flexi 8. When i do the adjust print test it prints at 494mm over 500mm and 496 over 250mm. When i go to adjust and confirm print test it comes out at 500mm and also at 250mm but reverts back and have no way of saving the setting.
    I have changes the PF motor as was a few current errors coming up but now they have stopped, also changed the Encoder wheel and sensor. all x axis feed roller are relatively new and all free and also th drive roller underneath them.
    Any suggestions on what can be done to remedy this problem any help is much appreciated. Many Thanks
     
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  2. Solventinkjet

    Solventinkjet DIY Printer Fixing Guide

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    Aug 2, 2011
    Denver, CO
    Only do the 500mm test. Changing to 250 overwrites the setting. You always want to use the 500mm adjustment if you can.

    I can't remember if Flexi 8 has this feature, it's in the newer ones for sure, but look around for a function called, "Print Size Compensation" It will print a line that you measure and then adjust so that it prints the perfect length. That and the PF adjustment are the two things that are going to help the most.

    At the end of the day the printer does have a tolerance for print length which off the top of my head is about +/- 1/8" over 8 feet. So don't pull you hair out trying to get it within that. Sounds like you do have some room for improvement though.
     
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  3. Alandofcastles

    Alandofcastles New Member

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    Apr 27, 2017
    Liverpool
    Hi Solventinkjet

    Thanks for your reply, i have done numerous 500mm length tests ( always 6mm short) on the printer but there is now way to save the setting as when you "confirm adjust print" it reverts back to the previous setting. In the manual t i follow the procedure ans get to section 13 and the manual says that when you confirm adjustment refer to section 15 but there is NO section 15. I will look in Flexi for an adjustment in the program itself.
    Thanks
     
    Last edited: Feb 12, 2020
  4. henryp

    henryp Member

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    Sep 25, 2006
    Sydney Australia

    After the Confirm Print Test had been printed and the length comes out correct, the adjustment is complete. If you again run the PF Adjust, the printer would default back to the original feeding increment and it will lose the feed compensation.
     
  5. Alandofcastles

    Alandofcastles New Member

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    Apr 27, 2017
    Liverpool
    Thanks HenryP, I understand what you are saying but when i do the confirm print adjust and go to print something it still comes out short? it like it isnt saving the change??
     
  6. henryp

    henryp Member

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    Sep 25, 2006
    Sydney Australia
    Not sure why, you are most likely not doing it correctly. Anyway, another way to correct the feed length is to do it in the RIP software, perform the output size compensation in Flexi
     

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  7. henryp

    henryp Member

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    Sep 25, 2006
    Sydney Australia
    Please see step by step Media Feed Compensation (PF Adjust)
     

    Attached Files:

  8. Alandofcastles

    Alandofcastles New Member

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    Apr 27, 2017
    Liverpool
    Hi Henryp
    Thanks for that information i will have to try that and see where i go from there Thank You
     
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