[Tibones]

Hello,

first attempt to printing CMYK did not go as planned. I used a 5000 watt metal halyde vacume exposure unit to expose the image. Washed the screens properly. Please see images.



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[Naptime]

so...

what inks did you use.
what screen frames.
what screen mesh.
what press.
what lpi.
what angle for each color.

LOTS of variables ...

 

[TYGERON]

How much knowledge, understanding and experience of the screen printing process as a whole did you accumulate before attempting four color process?

Looks like you totally missed the Cyan

 

[ScreenFoo]

I'm just going to throw the guess out there that you ran default halftones, which were fine as far as angle goes, but at far too high an LPI, missing all the very small tones.

Just throwing it out there.

 

[tomdinio]

Half-tones are tricky. The design still has the same affect regardless of the mishap.

Here at 3V Printing its a serious job working with half tones. Have you tired printing on burn out tees?

 

[Tj Ryonet Tech]

Cyan looks as though it is completely missing.

 

[Smalzstein]

Skin tones a common problem You should darken the highlights areas a bit in you design. And let the screens be outputted with at least 50-55 dpi.

Were the dotes on the skin even burned?

 

[gressy]

As TYGERON realized all light tones are missing. Mostly affected at cyan with it's the little amount.

Tell us more obout your workflow and we can say more.
Here are all possible reasons:

-wrong tone curve adjustment for halftone films
-overexposed emulsion/ white mesh
-too high screen lpi
-last one especially when printing with waterbased colors





http://www.t-shirtforums.com/members/tygeron.html

 

[ScreenFoo]

There's definitely cyan there--look in the leaves from the outside to the inside. Looks to me like every tone under 10-15% is gone. Bottoms and tops of letters fade to white instead of light tones. Still sticking with dot loss as the culprit--but whether it's because of LPI, exposure problems, or washout problems... no idea.