Canon iPF 670 head problem

Discussion in 'Large Format Inkjet Printers' started by Dejan, Apr 27, 2017.

  1. Dejan

    Dejan New Member

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    Location:
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    I have Canon iPF 670. There is problem with print head. As attachment is attached nozzel check and on Cyan is only half printered. The other nozzels not working. The print head print well only on some ligth cyan colors. I do head clean A, head clean B also I clean with special canon cleaner but it doesnt work. Any sugestion please
    [​IMG]
     
  2. Adam-KIP-Canon-HP-Tech

    Adam-KIP-Canon-HP-Tech New Member

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    I work on these all the time and this might be the most common problem. It could be the Printhead itself is having a problem so I would check the Number of days Elapsed under Information/Printhead Info and if it is not over 2 years then it is likely what I am leaning towards which is your Purge Unit. Your Purge Unit takes care of your PH. It caps it, pulls ink thru it, cleans it and keeps it from drying out. If your Purge Unit has a problem it is going to be reflected on the Printhead. This would also explain why your Head Cleaning A and Head Cleaning B is not improving things. Take the far right cover off and move the Carriage containing the PH to the Left out of the way, either by rotating the gears of the Purge Unit or you just get the Carriage Moving and quickly unplug the machine, leaving the Carriage out and away from the Purge Unit on the Far Right.
    Look for paper sitting on the Purge Unit. Look at the Ink Absorbers (the 2 Rectangular Pieces on top of Purge facing UP) and clear them of debris. You can even pop them out and rinse then under water if there is ink visibly piling up on them.
    If your Printhead is fairly new then I would definitely start with the a Purge Unit Cleaning, then Replacement, and hopefully there was no permanent damage done to the PH but that is a possibility.
     
    Charles Shough likes this.
  3. Charles Shough

    Charles Shough New Member

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    We have 4 of the IPF670's and three of them will not clean themselves during a Nozzle 2 or Nozzle 1 clean (A/B). We have reverted to cleaning them manually with a home made solution. After we have cleaned them, they print perfectly, but after about 50-100 prints they start getting horizontal lines again and the nozzle check reports are similar to your post. I noticed the purge units pads have ink on them, so I am going to try and wash them out. I will post again the results. Thanks for posting the information.
     
  4. cruiser2

    cruiser2 New Member

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    Hello! i have IPF 670 with some problem. The print head does not print yello and MBK
    Actualy there is ink in the tanks... also when I start cleaning it fills the reserovars with ink and it works till these reservoars get empty. Then no ink ejection. If I start cleaning again I am able to rpint several pages and then the same problem appears.
    the nozzle check is ok. And there is no error msg...

    Iliyan
     
  5. Charles Shough

    Charles Shough New Member

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    Cleaning the purge units and manually cleaning the print head with home made solution has made all the difference in using the ipf670 printers.
     
    Igor Kovalchuk likes this.
  6. Igor Kovalchuk

    Igor Kovalchuk Member

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    Your problem will keep three general ways:
    1. Ink;
    2. Clean unit in printer (parking station);
    3. Print head (worst option).
    Thereby you must step-by-step check and exclude possible options.
    Start from newest Ink because if problem will be in not with Ink you can use then in future and you not will lose money.
    Check Clean Unit – during clean in waste must going average 20ml Ink if this amount less change Clean Unit.
    Clean print head SPECIAL CLEAN LIQUIDE if it did not help.
    Change Print Head
    Good luck!
     
  7. cruiser2

    cruiser2 New Member

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    Just to update. I have started print head change procedure and I inserted the same PH.
    Then the nozzle check pattern was 99% (all 6 meshes were perfect). I started an yellow page A2. the yellow ink in the printhead finished and now I cannot print yelloy again :(

    Actualy there are 3 reservoars for each collor. The main changable tank, The subtank and the small rubber bag in the printhead. I do not have supply to the print head. Any ideas?

    Also I have IPF760 which is almost the same. The purge unit and the ink system are the same. I can take spare parts from there.
    unnamed.jpg
     
    Last edited: Apr 15, 2020
    Igor Kovalchuk likes this.
  8. Igor Kovalchuk

    Igor Kovalchuk Member

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    Please send a photo your ink system for detailed analysis your situation.
     
  9. cruiser2

    cruiser2 New Member

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    Hi! What exactly do you want to see?
    Here are some pictures:
    1.jpg 2.jpg 3.jpg 4.jpg

    If I put some additional air in the ink tank with injection, the collor appears. I cannot determine if the print head does not ask for ink... or the ink system does not pump ink to the head.
    I was thinking to open the right panel and to check all the cable conections... but tis is a shot in the dark!!!
     
    Igor Kovalchuk likes this.

  10. Igor Kovalchuk

    Igor Kovalchuk Member

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    I think that problem will be with ink please try change ink cartridges to new (fresh) ink and try print again, becouse I not see Ait in your ink system and before you say that you changed print head. Only two problem will can be 1- damage parking station or ink suck pump, 2 - problem with ink. Easy start from Ink testing
     
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