I’m guessing that you meant to say “when Printing with FM dot....”
Agreed, it has also been my experience that, when printing FM, the TVI values required to achieve proper Gray balance and NPDC are quite different from the TVI values required when Printing AM.
Nominal/traditional AM TVI values will tend to produce low a* and b* values in the gray ramp when Printing FM.
In general, Printing to G7 with FM screening will require lower-than-usual TVI in cyan and higher-than-usual TVI in magenta.
Many will argue that TVI no longer has any place in the context of G7. This is true as far as it goes. In the world of lab Color, neither TVI nor density have any currency.
However, until printing press manufacturers build a lab knob into their front panel, press operators with a job to do will continue to rely on density and TVI as real-world signposts and surrogates for the lab values that are the true targets.
In this context, it is reasonable to provide the long-suffering press operators with traditional (density and TVI) targets derived from the more logical but also harder-to-grasp lab objectives.
Original Message------
Hello,
We have been experimenting with Kodak's Staccato dot and I have noticed a trend that seems to differ from when I fingerprint using an AM dot, the cyan gain seems to be much lower than the other colors.
Is this common or do I have something else going on? I see the trend on multiple presses, stocks and inks.
Thank you,
John Stewart
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John Stewart
Freeport Press
New Philadelphia OH
(740) 658-4000
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