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screen printing => Newbie => Topic started by: ixpoz on January 23, 2018, 01:08:54 AM
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I am working on a 3 color job on 100% cotton. White, yellow and black, in that order. The first dozen or so went well, but then I am seeing that the black is starting to bleed around the top edges of the letters and into the sky, as well. I am using 156 screens with plastisol inks, PFP with the white and PFP with the yellow as well and then printing the black. I have posted a picture to show what is happening, any help would be greatly appreciated.
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Looks like the trap / stroke is a little big. 1Pt (vector) or 3Px @ 300DPI should do it. I would only choke the base 1pt rather than trapping the top colors. Usually for something like this I would print the black first. And I would have the top colors on 230/40's.
If you must P/F/P. Try Black / White / Flash / White / Yellow. You should not have to PFP the yellow. With a top white and a little art tweak, you could easily run this with one flash.
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That’s an interesting color order, I hadn’t thought of that. So why would the first 10-15 print well and then start heading down hill? Is there any hope of saving the current set-up?
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As long as you have a infrared/radiant heat flash unit, that print order is a good one.
Also, can you tell us why you are trapping so high? Does your press not hold tight registration? Low tension screens? anything else?
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Basically it was a rookie mistake. When I initially did the art and burnt the screen, the registration marks didn’t expose properly and I couldn’t get the registration on to save my life. So when I redid the screens, I “tweaked” the art thinking I was doing myself a favor and over compensated with the bleed/stroke.
So going to back to what you were saying about the flash, I’m using a vastex f-1000 flash on a vastex v-1000 press, so it certainly has the ability, it’s mine that I’m questioning at the moment, Lol!
Anyways, are you suggesting that I increase my flash time and I may be able to save the job?
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More often than not.... I'll print the Black first and flash it good.
... I never get any bleed after that.
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On our manual press I would have went: black yellow wow, flash, white yellow wow, flash, White. Into the oven.
Sneaking the black in early helps us a lot in the manual press too. I find the opaque inks for whites and yellows are hard to cover with a typically thinner black ink. Especially since we’d run it through a higher mesh in this case because of the coverage. Plus saves a spin because it can usually be printed wet on wet.
I realize this isn’t helpful to your situation but maybe it will be to a manual printer eyeballing this thread for tips.
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