In this episode of Deep Dive with Colin, we’re diving headfirst into a project that pushes the boundaries of screen printing: CMYK on paper—with ultra-tight registration.
For many printers, paper is a whole different beast compared to garments. It doesn’t stretch, it shrinks just enough to throw off your registration, and it soaks up ink in ways that can make or break your final image. And for Colin? This was the first time combining all that with a full CMYK process. Let’s just say… the learning curve was real.
The Setup: New Territory, New Challenges
Colin chose to use 230 mesh screens instead of the more standard 305 for CMYK. The goal was to move more ink and reduce on-screen drying. The result? Increased saturation and a need to cut opacity.
To dial it back, he mixed his Green Galaxy™ Aurora Force 4 CMYK inks 50/50 with Green Galaxy™ Clear Core Base. This helped tone down the color strength for better reproduction on paper.
Paper Shrinkage is No Joke
Paper can shrink dramatically under heat. Colin’s test revealed an eighth-inch shrinkage in paper that passed through the dryer. That’s significant enough to wreck registration if unaccounted for.
The fix? Pre-shrink your stock by running it through the conveyor dryer before you print.
Dialing in Registration
Printing on paper demands consistent placement. Colin used a vacuum platen and covered unused vacuum holes with platen tape and cardstock to keep the screen from sticking down mid-print.
Printing & Ink Stacking
Stacking ink leads to tacky layers and longer dry times. Colin found better control with a light touch and consistent stroke—key for clean CMYK layering.
The Results: A Beautiful Learning Curve
While not a perfect reproduction, the final print is a win for growth. It’ll hang in the shop as a reminder of what was learned—and what to try differently next time.
Final Thoughts
CMYK on paper challenges your entire workflow, from mesh choice to ink formulation to handling shrinkage. But that’s where growth lives. Tackle something hard, and you’ll come out sharper for it.