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Printing problems for Newbie to solvent.

Discussion in 'Digital Printing' started by rcook99, Jun 28, 2012.

  1. rcook99

    rcook99 Very Active Member

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    May 25, 2006
    NE
    I am printing on LG Bannux 13oz. Matte. I keep getting these lines in the middle of printing and the lines are perpendicular to the movement of the print head. Have wasted 6ft of material and have not put my hands on the exposed material and still getting the same problem buying different spots each time. Just cleaned the head and it's still doing it. The profile I am using is what the dealer suggested for this material. Heater setting from front to back are as follows Preheater: 33c, Platen 33c, and Dryer 50c
     

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  2. noregrets

    noregrets Member

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    Jan 27, 2007
    Nz
    is the head striking the media at all? Looks like it could maybe be head strike??
     
  3. rcook99

    rcook99 Very Active Member

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    May 25, 2006
    NE
    I have to say I honestly don't know! I printed 3ft x 4ft of vinyl prior to printing the banner material and had no problems. Keep in mind I am new to this so I have not seen a head strike yet unless that's is whats in the picture. Problem is this is due tomorrow and of course no way to get a new role delivered in time. I have thought about printing it on vinyl but that is a last resort.
     
  4. edgette

    edgette Member

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    Jul 12, 2010
    They look like head strikes. If you line those spots up on your printer you will probably see they are between the rollers and the material is slightly buckling up there. Your heat seems OK. Does your printer have the option to run at a higher head height?
     
  5. rcook99

    rcook99 Very Active Member

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    May 25, 2006
    NE
    Yes head height is already in the up position. A friend of mine seems to think maybe its old stock and the oil might be bleeding out. If you look at the spots they are white as if the ink won't stick to them.
     
  6. wwpro

    wwpro Member

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    Apr 21, 2009
    if you can print another material with no flaws before and/or after the banner, try cleaning the media with some alcohol, it might be media contamination.

    I'm a newbie too, so don't believe what I'm saying 100%
     
  7. deejay

    deejay Member

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    Oct 4, 2007
    Did you try calibrating the printer to check the feed rate?
     
  8. ironchef

    ironchef Very Active Member

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    May 1, 2012
    Miami, FL
    You mean calibration for uni-directional printing? Or a diff. Kind?
     
  9. kffernandez

    kffernandez Member

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    Jun 26, 2010
    Philippines
    if that is a head strike. you will notice that your media buldges up in that particular part. thus, causing some part of the carriage [possibly the head] to hit your media.

    kelly
     
  10. idsignsil

    idsignsil Member

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    Oct 30, 2010
    Springfield, IL
  11. anotherdog

    anotherdog Very Active Member

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    Surely head strikes would deposit ink?

    With the heads in the raised position that buckling would be obvious.
    Encoders strip? but that would happen on other materials.

    Try sliding the material over slightly. If the marks are in the same position it's the printer, if the marks move with the material you have a material issue.
     
  12. IronHawk

    IronHawk Member

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    Jun 28, 2012
    Any head strikes that I've ever had have definitely left ink on the media.

    Good idea.

    You could also roll some of the material off and see if you still have the problem. It looks like flawed material to me.

    Hope you figure it out.
     
  13. ColoPrinthead

    ColoPrinthead Swollen Member

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    Dec 17, 2009
    Donkeytown, Colorado
    If it were a head strike I would expect to see some black along the lines/marks. I've seen similar but not as bad marks on some aged cheap scrim banner being run on an HP 10K in the past.
     
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