Techkon Spectro Jet Manual page 53

Measure – InkCheck (ExPresso Pro)
Densitometric values are a direct measure for the ink applied on the paper.They
are very process-related, although they are relative values only. Colorimetric values
as recommended in print standard ISO 12647 are absolute values, but they are not
suited to use them for handling the printing process. Thanks to the spectral measure-
ment technology of SpectroJet, the very useful "InkCheck" function combines the
best of both worlds: Spectrally based recommendations how to set the ink keys as
used from density in order to meet colorimetric targets required for printing within
ISO standards.
Manual TECHKON SpectroJet Chapter 3 – How to use SpectroJet
In this case there is too much yellow ink
applied in ink zone 7. In order to achieve a
lower DE, the density has to be reduced by
0,10 from D=1,42 to D=1,32. That reduces
DE from 3,8 to 1,78.
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