X - R i t e e X a c t ™ I n s t r u m e n t
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Absolute Color Strength Function
The absolute color strength “K/S” is a measure for the concentration of a color.
Color Strength Function Setting
Tap the Color Strength button and set the calculation method and colorant.
To determine the color strength you must first choose one of the available calculation methods:
Max K/S: K/S is calculated at Point of maximum reflectance in the spectral curve.
Mean xyz: Calculates color strength by average mean xyz values across the visible spectrum.
Next, select the type of ink that is used to determine the color strength. You can choose
Transparent ink, Opaque ink or Textile dye.
Absolute Color Strength Measurement
The absolute color strength function calculates the color strength of the measured sample.
Strength is calculated using the method selected in the function settings.
1.
Select Absolute Color Strength.
2.
Measure paper if required.
3.
Measure the sample.
4.
View data.
Relative Color Strength Function
The relative color strength "DS" is a measure which compares the concentration of a color with
the concentration of a standard. DS is the ratio between the absolute color strength K/S of a
sample and the absolute color strength K/S of the standard color.
The relative color strength DS indicates the extent to which a color is concentrated in comparison
with the standard color. If for example DS = 50% means that the sample color is only half as
concentrated as the standard color.
Depending on the circumstances, different formulas can be selected for the calculation of the
absolute color strength K/S. For transparent inks, the sample color must be applied in an equally
Simulated color of standard
Function, illum/obs, and
Measurement Condition
selected
Simulated color of sample
Illuminant/observer
combination selected
Metamerism index
values
Function, illum/obs, and
Measurement Condition selected
K/S value at wavelength
Simulated color and timestamp of
reading displayed
