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Minor banding issues
Hi Folks,
I’ve a SP-300v that I’m using to print some interior art. The pieces are of abstract art and consist of only solid colours.
I see some minor banding issues when printing that are more apparent with certain colours (burgandy was one that highlighted to issue very well).
Given the banding direction I’ve looked at my feed calibration and its spot on. The material I’m using is from Grafityp and is their new matt photo paper (I think the code is SMP-O30).
Unfortunately there’s no profile available from Grafityp at present and I’ve been using the ‘GPPM : Photo matte paper’ one included with Versaworks (I’m using v3). I’ve also overriding the default ‘Pre-press US’ colour profile and have been using the ‘Sign & Display’ one as I was advised (from a Roland engineer) this gives solids a more vibrant look to solids and helps remove unneeded dithering (obviously not the correct choice for photos etc). I’m printing at 720×720 dpi using a bi-directional pass. The profile has automatically switched the mode to ‘CMYK W-Pass’ which I believe lays down a little more ink to improve vibrancy and image quality.
The banding gets ever so slightly better if I slow the head speed down and is completely removed when I up the resolution to 720x1440dpi. Question, is is this normal? Or should I be able to see good looking solids no matter what the colour using 720×720 dpi?
Any helpful tips that might improve the situation are most welcome or even if its just to say ‘yep thats the way it is buddy’ 🙂 🙂
Cheers chaps (an chapesses) 🙂
Pete
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2 Replies
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‘yep thats the way it is buddy’
Reds & Burgundy’s will always be the colours first to band, this will be intensified by using the Sign & Display. Because you don’t have a dedicated profile it will be a case of playing & yes you may have to use high resolution to get the results you want. However you can also reduce the head speed, reduce the inks via the colour sliders etc. It takes a little while but trying different profiles will get you the result you want. One point to remember if you are printing small images ensure you print on the far side of the paper or change the head to full scan mode as the profiles will work better running the length of the printer allowing the ink a chance to dry before the next pass is laid down which helps to reduce banding.
Hope this makes sense & helps
Kev
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Cheers Kevin,
Thanks for all the info and advice. At least I don’t fell like I’m doing something wrong all the time now 🙂
Pete
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