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Odd colour banding on versacamm sp540, anyone help?
Evening all,
Did this print of 5 various pantones for a client today, and the one in the middle (pale green) has 3 very odd bands of lighter colour running through it. Its not the usual type of banding I’ve seen and it is showing in the other colours. Has anyone come across this, or know how to get round it?
Pic attached, hopefully you’ll be able to see the fault.
Best wishes
Andy -
13 Replies
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Hi Andy,
how are your ink cartridges? I get these when one of the inks is nearly empty! It happens very rarely, but exactly the same.regards
Dan -
All at least half full Dan…. the plot thickens!
Andy
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If the temps not right for the media then it will ripple with the heat. When the heads travel over material it will give the effect you’ve got. This occurs between the pinch rollers when the material is moving forward.
Try it again mate and you’ll see what I mean. 😉 -
Do you mean too hot Karl? Usually run the thing on 40 degrees print and dryer, is this a bit OTT?
Andy
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what media were you printing on andy?
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Dan,
Its grafityp S20P, 7 year polymeric – 75 micron
Andy
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how many passes are you printing with Andy?
we were getting some very blotchy patches in a green we were printing…….we upped the passes and it improved dramatically
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Thats 2 passes, is going to be mounted onto glass for a decorative panel
Andy
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That would be to hot on my machine for most media. Most of the profiles in the Shiraz rip are set at 35. I do have the same problem with some colours as you’re having so tend to knock it down a bit.
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Perfect, i use the same stuff and I have my heat at 40 and my dryer at 40! i have never had it happen on vinyl, it normally happens on lcan canvas, when ink is low.
by the way i have the same versacamm sp-540 and print through versawerks
Dan
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Andy, I would try taking the passes upto 4 and see what happens
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Will try that but it’ll take ages and cost a fortune in inks.
Andy
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Been doing some fiddling with this over the last few days. Think Karl is on the right lines, tried messing about with the heat settings on other bits and pieces and the fault does get worse/better as I mess with it.
Did some hydrosol today which was mainly royal blue and used the long media clamps and the whole set of prints about 6m was absolutely perfect. Using matte pet profile – high quality.
So I think the problem was between the pre-heater and printing as the media may well of been buckling up intermittently over the print.
Andy
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