Techkon Spectro Jet Manual page 52

Measure – Colorimetric (ExPresso Pro)
Thanks to the spectral performance of SpectroJet it is possible to calculate and
display colorimetric values as well. Measurements in colorimetry modes have the
advantage of an absolute description of color based on characteristic values. So it is
possible to measure spot colors as well.
Colorimetric measurements refer in most cases to the most popular color system
in the printing industry: the CIE L*a*b* color space. The color distance DE describes
how close two colors match. A value of 0 means that two colors are identical.
It can be defined in the "Measurement settings" (see p. 34) according to which DE
formula the color distance is calculated by ExPresso.
1.
2.
3.
1. Detailed information for every ink zone by pointing on the bar graph.
2. Average values for all ink zones.
3. Measurement values out of tolerance will be marked with red top.
Page 52 Manual TECHKON SpectroJet Chapter 3 – How to use SpectroJet