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Vj-1614 - pattern on the printed

Discussion in 'Mutoh' started by Rafal, Nov 7, 2012.

  1. Rafal

    Rafal New Member

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    Nov 7, 2012
    I have a problem with the plotter VJ-1614.
    I have a pattern on the printed page.
    This can be seen in the pictures.
    What could be causing this?


    At the top of bi-directional printing.
    At the bottom of unidirectional printing.

    vj1614-3a.jpg


    The second photo of bidirectional printing. A second pattern is approximately 86cm.

    vj1614.jpg
     
    Last edited by a moderator: Nov 7, 2012
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  2. CheapVehicleWrap

    CheapVehicleWrap Very Active Member

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    Passes my quality control.
     
  3. Matt-Tastic

    Matt-Tastic Member

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    Nov 25, 2008
    dirty encoder?
     
  4. heyskull

    heyskull Very Active Member

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    +1 dirty encoder...
     
  5. Graphics2u

    Graphics2u Very Active Member

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    Iowa
    +2 on a dirty encoder strip, especially from looking at the first picture. Something is affecting all the colors at the same spot. They are not all lined up because of the firing order of the colors.

    Or could be a bad spot in cable running from mainboard to the carriage board. Losing a signal at the same time.
     
  6. Rafal

    Rafal New Member

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    Nov 7, 2012
    I think it's not encoder.
    To test 8 and 9 I moved the paper.
    The pattern is always the same distance on the edge of the paper.

    [​IMG]


    I did test 2 unidirectional printing. There is only one pattern.

    When I print a shorter strips (80 cm) print is clean. Test 3 and 4
     

    Attached Files:

  7. signage

    signage Major Contributor

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    That is what the encode strip does, tells the print head it's location along the platen.
     
  8. Matt-Tastic

    Matt-Tastic Member

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    Nov 25, 2008
    then perhaps your encoder reader has a loose connection, or there is damage to the ribbon cable that is making it skip at that exact place.

    the easiest way to check is to look under the hood. if the encoder looks clean, with no scratches, marks, fingerprints, dried ink overspray, etc, you are probably right that it isn't the encoder. but it's also the easiest place to check for a problem.
     
  9. Compilla

    Compilla Active Member

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    Jul 21, 2005
    +1
     
  10. Robert M

    Robert M Very Active Member

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    colorado
    cable

    Yes to the trailing cable, I have seen this before.
     
  11. Robert M

    Robert M Very Active Member

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    colorado
    ps

    to check it take off the long cover that is over the rail the head runs on. The ribbon cable may be rubbing on the cover causing the short.
     
  12. Rafal

    Rafal New Member

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    Nov 7, 2012
    This is not a problem of the encoder.

    Stop all print nozzles to 1 cm when printed 86cm.
    No matter if print to the right or to the left.
    Therefore, when uni-directional printing is one pattern. With bi-directional printing are two patterns. Always about 86 cm from the beginning of printing. No matter how the paper is loaded in the printer.
     
  13. Matt-Tastic

    Matt-Tastic Member

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    Nov 25, 2008
    Then replace the motherboard.
     
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