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Can you judge my testprint please?

Discussion in 'Roland' started by JJ_Holland, Sep 11, 2012.

  1. JJ_Holland

    JJ_Holland New Member

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    Jun 30, 2011
    Hello,

    The last months we have had a lot of troubles with banding in black prints. I have tried to manually clean it by pressing a swap with cleaning liquid gently against it but that did not help a thing.

    The testprint shows minor problems but I am starting to think that although all nozzles are firing that the printhead should be replaced. Before I replace it I would like to hear your opinions about the testprint. Any tips/ideas are welcome.

    Thanks in advance.
    JJ


    img009.jpg
     
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  2. Jack Knight1979

    Jack Knight1979 Very Active Member

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    that is a fine test print.

    You need to post the problems with your blacks. Most likely a profile or RIP problem.
     
  3. mudmedia

    mudmedia Active Member

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    The black print before your test print looks good to me?
     
  4. Jack Knight1979

    Jack Knight1979 Very Active Member

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    the small gap between the passes before you reach total passes is a feed calibration problem.
     
  5. JJ_Holland

    JJ_Holland New Member

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    Jun 30, 2011
    Okay thank you for the quick replies guys. Seems like I can not show you the problem with this image, whats the best way to show the problem?
    The banding I have is very small, I have tried feed adjustment, lower headspeeds, uni-directional printing and also tried Versaworks after having the problems in Onyx Postershop 7.1. I am using Avery MPI2000 (polymeric vinyl) for about 5 years now and never had this problem.
     
  6. J Hill Designs

    J Hill Designs Major Contributor

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    if the black you are printing is K only, those few deflected nozzles might come into play. if you use rich black (discussed many times on these forums) it should alleviate and banding due to nozzle deflection
     
  7. JJ_Holland

    JJ_Holland New Member

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    Jun 30, 2011
    In the print shows here I have set Postershop to print black only. I only have this problem with blacks, the rest prints perfect. I always add CMY to my blacks to get a rich black but I printed only black now to show the problem is some in the black.
     
  8. sfr table hockey

    sfr table hockey Very Active Member

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    This hits it on the head...

    Looks like your SC 545 test print and not a CJ 500 test print but using my CJ 500, I had similar issues where my black and cyan head have a couple deflecting nossles. On a solid fill test print the black shows slight banding but as jhill said, if you are not printing just 100% black, it is less noticable if not gone all together.

    Make sure your feed calibration is done and accurate.
     
  9. JJ_Holland

    JJ_Holland New Member

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    Jun 30, 2011
    You are correct, this testprint was printed on the SC-545. I have tried to hide the banding a bit by mixing colours but the banding stays visible.
     
  10. Bly

    Bly Very Active Member

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    The test print looks alright.

    Onyx 7 did produce slightly weak blacks where I had to go in and change to 100k 50, 50,50 if a large area. Never used k only.
    Version 10 doesn't have this problem and blacks are generally dense.
     
  11. Rafael_Tech

    Rafael_Tech New Member

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    Aug 3, 2012
    Calibration

    Maybe the printhead needs bias/vertical calibration, horizontal and bi-directional too, not sure if K is the key printhead on your printer. Ive seen this on other Roland printers and with proper calibration they worked fine.
     

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