I hope we are talking about offset-printing and not flexo or gravure…
In offset-printing, the european standards are based on positive
plate-making, in the USA you have negative plate-making.
Both processes are based on film and conventional plates.
Acoording ISO 12647-2, you have 6% diffenrence between positive and
E.G. Papertype 1/2 coated paper:
Europe 14% TVI for the 50% rastertone
USA 20% TVI for the 50% rastertone
If both of your printers are using CtP, they can use compensation-curves
in the RIP, if YOU as the customers clearly communicates, what kind of
data and proofs you are deliviring.
I am seeking some independent verification from the European members of this board or from anyone who has experience printing (packaging) in Europe and US.
My company’s goal is Global consistency in the packaging we print in Czech Republic and USA. The presses are similar, the inks are matched, the substrates roughly equivalent. At optimal densities, the US measures a gain in the mids of 18-24% but Europe insists their is 12% maximum. They say this is without curving the plates (beyond the normal adjustment).
Can anyone share their experiences in this matter?
Thanks in advance
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