This blog is intended to initiate discussions and provide feedback and answers to questions regarding the reproduction of color. The focus will be in current issues in color management, ICC profiling, ink and paper, print management, soft and hard copy proofing, printing technology... pretty much anything that interests me related to printing.

Monday, March 19, 2007

Method for Calibration of a Printing System with digital Data using Near-Neutral Scales

by Dave McDowell, Consultant

There is a change in the game, cause more than 95% of content data is exchanged digitally and there are many options to manipulate the data... BUT no standard method to do so.

Dave created a model workflow: we need to determine a stable operating position AND match both aim targets and overprints. The system should be adjusted for in-gamut colors.

so how can this be done: adjust the process parameters or adjust the data.

Platesetter curves, rip curves, TVI curves, NPDC curves, device link profiles...

At ISO TS 10128 calibration standard meeting the committee focused on agreeing on the last three. One point that Dave makes thepoint that in effect there are no densities that are defined outside a CIELAB color space that is not based on some other characterization data. There are no densities as standard targets that are device specific. As I quickly understand it, and I might be wrong, this TS will help narrow down the specs by standardizing the calibration and using the strenghts of these approaches.

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