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VP-540i wired misting over spray problem

Discussion in 'Roland' started by Biggermens, Feb 12, 2020.

  1. Biggermens

    Biggermens Member

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    Apr 8, 2010
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    Hello Everyone

    I am stumped with this one, its pretty wired, seams to happen were the wheels are and worse on 3M 40C usually when i print 100% black, can hardly tell looks like the yellow is doing it also
    I am using Marabu inks that i got from my Roland dealer, not sure its the ink, a few of my buddy's use the same ink in there Roland and seams like they are not getting that problem,

    Anyone have any ideas ??

    Thanks


     

    Attached Files:

    Tags:
  2. Andy D

    Andy D Very Active Member

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  3. autoexebat

    autoexebat Member

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    Looks like another 3rd party ink problem . Hope you can narrow down the issue and keep us posted .
     
  4. Biggermens

    Biggermens Member

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    That is what i am thinking but the Roland dealer i got the ink from says no,
    I pretty much totally restored the machine, new heads, cap tops, wipers, dampers, all new lines etc..
    and it seams worse with the 3M 40C then anything else i use, I managed to get my jobs don't to a acceptable level
    The Yellow i left at 100% and the black i used RGB black instead of solid 100%, and i removed all the wheels but the outside ones
    people told me your wheels are dirty etc... they are brand new wheels, and the marks happen while its printing
    the wheels do not go over the print after,

    I am guessing maybe conditions might be part of that,
    What would be optimal conditions for this printer to run perfect ???
     
  5. anthonyd969

    anthonyd969 President

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    Hi,

    I am having the same issues with both my XC 540 pro III machines!
    Same **** with the wheel tracks and fuzzy edges.

    I think someone posted it was the 3rd party inks at this point. I have been using Nazdar for 2 years now no issues till the past 2 months.
    I have been going nuts. Changed so many things and anti static matt, lines, material, etc,

    If you want to talk feel free to call me 973-575-0082 Anthony

    https://signs101.com/threads/help-w...nd-soljet-pro-iii-xc-540.157412/#post-1463917
     
    Last edited: Feb 13, 2020
  6. Biggermens

    Biggermens Member

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    I am guessing it might be static, i have some that looks like it cracking, i have to find it in the garbage and post a picture

    Do you get different effects with different materials ??
     
    • Agree Agree x 1
  7. anthonyd969

    anthonyd969 President

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    Mostly over spray fuzzy edges and things that look like tank tracks.
     
  8. Biggermens

    Biggermens Member

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    It weird, i noticed if i change my black in versaworks to C0% M0% y0% K100% it is really bad, but if i use simple RGB black i still get a bit of misting around the edges but makes most jobs acceptable
    but i do have to remove all the wheels,
    I have a few things i will try and i will keep you posted.
     
  9. player

    player Major Contributor

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    If you could try switching to OEM inks it would be good to see.
     
  10. hand851

    hand851 Roland Mutoh & Mimaki inks digiprint-parts.com

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    Try head height to high. Print unidirectional. also can I see a nozzle check?
     
  11. anthonyd969

    anthonyd969 President

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    Hello, Here is the test pattern.
    Also,
    I got the humidity up in the room with a 2nd humidifier to 35%
    AND I removed the center media wheels from printing.

    Seems to work now....
     

    Attached Files:

  12. anthonyd969

    anthonyd969 President

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    That's my last option.
    I've been using these and talked to there tech support. The product hasn't changed for years. So the issue is new and has to be environment or something else
     
  13. Biggermens

    Biggermens Member

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    Hey Anthony
    I did a job today on some cheep Drytac mat finish today with lots of black
    no problems not over spray temperature was about 20oC and around 40%rh

    That happens to me pretty much just with 3M
    Are you machines grounded properly ??
     
  14. anthonyd969

    anthonyd969 President

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    Amazing how weather effects us in our industry. I have everything grounded along with a anti static matt plus the static cords above and below the material. Always this way for years.

    But seen a difference after adding an extra humidifier today which got me up to 40 percent.

    Running different material tomorrow so we will see what happens next.

    Keep you posted.

    Glad things got better for you Bigs
     
  15. Joe House

    Joe House Active Member

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    That's pretty classic static electricity problem. You develop a charge as the vinyl peels off the roll and then you get another charge as the vinyl rolls under the pinch wheels. This can either attract or repel ink from where it's being directed from the jets. Also, different medias generate static at different rates.
    Higher humidity will help dissipate the static charge so getting within the manufacturer's recommended environment is helpful. Also, printing in a slower print mode - higher number of passes or using unidirectional printing instead of bidirectional printing or slowing down the carriage speed all help reduce the rate that static will accumulate on the media - this may get you through a period of very low humidity in a pinch, but the best advice is to bring your print environment within spec. At the very least, this will help reduce the number of variables that we have to consider when troubleshooting print problems.

    Something like this sitting on your printer is a cheap investment for the peace of mind that knowledge brings.

    Good Luck
     
    • Agree Agree x 1
  16. anthonyd969

    anthonyd969 President

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    Hi Joe,
    Thank you for all your knowledge. I do feel taking all those precautions has helped tremendously. I did add those humidity meters to both printers so we can see where the room numbers are.

    Guess I just have to keep this up for now till things change a bit.

    Enjoy the weekend and thanks again.

    Anthony
     
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