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TAC and "Total Ink Limit"
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TAC and "Total Ink Limit"


  • Subject: TAC and "Total Ink Limit"
  • From: "CS Carl Stawicki (4211)" <email@hidden>
  • Date: Thu, 3 Jul 2003 09:27:59 -0400

Hi all,

I'm a little confused about how my Total Ink Limit in Photoshop ends up on
press.

If I convert a 0rgb to US Web Coated (SWOP)v2, I get 75c 68m 67y 90k, which
equals exactly 300% total ink (Perc., BPC on). Now, I have 2 questions: What
are the values of this color that ends up on plate, and what are the values
that end up on press? (this is a computer-to-plate process)

All the values output the same on plate, and gain on press. If this is
correct, then I will end up with higher values on press. If you account for
a 20% dot gain (just to keep it simple), the original 75c 68m 67y 90k in my
Photoshop file would end up gaining to 89c 84m 84y 96k, equaling 353%, which
exceeds the TAC of Swop (300%). Is my reasoning correct?

Thanks,
Carl.
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