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problem with magenta on spitfire

Discussion in 'Mutoh' started by Veka, Jul 29, 2011.

  1. Veka

    Veka Member

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    Jun 9, 2011
    Herzegovina
    Hello everyone, I have a problem with the magenta color, does it work completely, the second head is not at all, and the first half of a nozzle. At one point they had begun to do both, but that the second head is worked up to a half after the release prints in the print color would disappear. Even after a lot of cleaning means to begin. Still occurs and that the test print does not lack the same part of the nozzle at the beginning and end.
     
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  2. Veka

    Veka Member

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    Jun 9, 2011
    Herzegovina
    Here is a picture test prints, and attempt to print squares of red and magenta, which are weak and thus lose a couple of passes.
     

    Attached Files:

  3. randya

    randya Very Active Member

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    Apr 6, 2007
    Arizona
    You have a lot of plugged nozzles.
    Try head soak.
     
  4. Veka

    Veka Member

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    Jun 9, 2011
    Herzegovina
    But the nozzle is used to appear on the test, and after that the next gone. They are not constantly clogged nozzle of the same, except the 2 heads, which appeared half a couple times and disappear as soon deserted print.
     
  5. randya

    randya Very Active Member

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    Apr 6, 2007
    Arizona
    Then probably an air leak.
    If there is air in the line back to the cartridge.
    Then can be cartridge, needle, connections.

    If no air in the line,
    Then probably connection at the damper, or damper connection to the head.

    Or ink is not optimized for the heads.
     
  6. Veka

    Veka Member

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    Jun 9, 2011
    Herzegovina
    How do i do a head soak?
     
  7. Veka

    Veka Member

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    Jun 9, 2011
    Herzegovina
    I tried to change the place Cartridge, but nothing. Before the clock on a test have emerged all nozle on the head which is half the whole time, but shortly after the next test they turn back halfway.
     
  8. randya

    randya Very Active Member

    2,060
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    Apr 6, 2007
    Arizona
  9. randya

    randya Very Active Member

    2,060
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    Apr 6, 2007
    Arizona
    Probably an air leak, maybe a bad pump.
     
  10. Veka

    Veka Member

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    Jun 9, 2011
    Herzegovina
    Thnx Randya for all

    But nothing helped, I changed the color back to the one that was previously OK, changed haulers, has reviewed the air, and pumps are ok, but again the same. I do not know what to do anymore, do you have any idea yet?:thankyou:
     
  11. tgrinds

    tgrinds Member

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    May 29, 2010
    New Zealand
    Pull the top cover off and make sure the ink line connections are secure. I've seen this issue before.
     
  12. artbot

    artbot Very Active Member

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    Feb 18, 2010
    Houston TX
    looks to me like an air leak at the front of the cap, also, i'd check to make sure that head is still installed nice and solid. it might be coming loose at the front and the cap springs pressure is being absorbed. also, the cap springs maybe getting weak. do you have your carriage set to low when you are doing your diagnosis. make sure you are getting maximum contact on your head. it's most likely not the supply side of your head because it is the bottom of both sides of the print head. to completely eliminate a supply side possibility, put the cyan damper/lines on your magenta manifold and do a test. most likely your cyan will also fall out. if not and the cyan prints perfectly you have a supply issue. but i doubt that will happen.


    couple things to do.

    1) make sure your cap is making good centered contact with that head. paint the outside rim of your cap with some black ink. gently park the head on to the capping station so that the magenta head imprints the ink on your cap onto the bottom of your head. get a flash light and see if the imprint is centered.

    2) get the print room very quiet. pull a vacuum with a syringe from the pump or waste line. listen for an air leak. the best way to do this is with an automotive stethoscope. they are very cheap and can zoom in on the exact spot of leaking air. if you hear an air leak do the following.

    3) press down on all your caps. see that they are all behaving the same way. your magenta cap may be stuck at an angle forwards.

    4) see if the magenta head's cap spring seem strong. if it seems weak (it could also have fallen off), take apart your capping station and stretch out your cap springs on the magenta head.

    5) pour solution into the magenta cap. does it drain quickly? if not there may be a clog underneath that portion of the head.

    6) if you have the kind of cap tops that are removable. switch the magenta cap top with a functioning head. see if the issue follows the cap top or stays at the head.

    7) i doubt this is the problem but switch pump lines with the magenta pump line so a functioning head's pump line is connected to the magenat head's drain line. does the problem go away. if so, your pump is not getting enough vacuum to the head. also, manually pulling a vacuum from the waste line and doing a test file can be a good diagnostic test.

    but i would first look for an air leak at the front of the magenta cap. also a cracked manifold can greatly reduce over all negative pressure inside the cap. to see if there is a small fracture. place a damper with a syringe attached to it on the magenta manifold nipples. put some fluid pressure on the manifold (both front and back nipples). does the "moat" around the nipple fill slowly with fluid or does it remain dry (you have to remove any protective head covers to see this).
     
  13. Veka

    Veka Member

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    Jun 9, 2011
    Herzegovina
    Artbot Hello, I replaced the damper on one's head, now missing cyan, and magenta is ok on the place where it was cyan.
     
  14. artbot

    artbot Very Active Member

    3,164
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    Feb 18, 2010
    Houston TX
    okay. in that case do not worry about cartridges, lines, dampers, o-rings, fittings, etc. all of that is working fine. did you go through the diagnostic 1-7 earlier mentioned. was there anything out of the ordinary?
     
  15. artbot

    artbot Very Active Member

    3,164
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    Feb 18, 2010
    Houston TX
    when you tested the manifold, did you see any solution gather in the "mote" around the nipple? ...i'm assuming there was not audible air leak?
     
  16. Veka

    Veka Member

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    Jun 9, 2011
    Herzegovina
    Thank you very much everybody, especially Artbot the detailed explanations of problems and eliminate the same, the problem was the manifold
     
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