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Having a problem with failed registration.

2431 Views 5 Replies 5 Participants Last post by  Industryps
I need some help. I am using AI and when I do multicolor designs, everything looks good. When I lay the films on top of each other everything looks fine. When I print to substrate, there must be some slight movement going on or I am failing to register accurately. I'm using Riley Hopkins 4x4.

Is there a way to compensate for this in AI? Maybe layer by layer? Simply increasing the scale does not work.

Ill use these shapes in PS for ease of following on my part.
See the white ring around circle and outline on upper blue area?
How do I fix that?

I could stroke to give an overlap, but is there a better way?

https://photos.app.goo.gl/R6GlAQbRllJ0DmHI2
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I have an old Hopkins press. There can be some shifting as clamps are tightened on the frames. It's usually just one of four screens. I start with the problem screen slightly off registration and when clamped down it will shift into place. It can take some time to adjust, but once in place, the screens stay true.
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Is it consistently off in the same areas or is it different from print to print? Does your press have micro reg?
It's fairly consistent. There are screws behind the frames and back levers which when loosened allow the whole frame to be moved any direction, but for me, it's easiest just to work with the 1/16th of an inch that the front of the frame swings out when the main clamps are tightened.
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I could stroke to give an overlap, but is there a better way?

https://photos.app.goo.gl/R6GlAQbRllJ0DmHI2
It looks like your art has zero Trapping
You need to put a thin stroke around your blue and red layers.

Are you printing on paper? If so, be aware that waterbased inks on paper cause shrinkage, as does high/low humidity and many other factors. Trapping is pretty much a must on paper prints.
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