X - R i t e e X a c t ™ I n s t r u m e n t
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thick layer as the standard color. Only in this way can a statement be made regarding the color
concentration.
Concentration (conc) indicates the extent to which a color should be concentrated to correspond
as accurately as possible to the standard. Residual color difference (rs
Δ
E) is used to investigate
whether the sample is actually the same as the standard. It compensates the sample to the
concentration of the standard and calculates a CIE delta E76 to it.
This function requires a valid standard so it cannot be used in the Basic Tool.
Color Strength Function Settings
See Color Strength Function Settings for the Absolute Color Strength Function description.
Relative Color Strength Measurement
1.
Select Relative Color Strength.
2.
Measure paper if required.
3.
Select or measure a standard.
4.
Measure the sample.
5.
View data.
Paper QC Function
(Job tools only)
This function is designed to check the appearance of the substrate when running a job.
The left side of the screen displays CMYK density values, and the right side either
Δ
Lab &
∆
E
values or
∆
LCH &
∆
E, depending on the user configuration.
Paper QC Function Setting
(Job only)
Tap the Paper QC button and set the mode the results are displayed. Options are: CIE L*a*b* (as
used by G7) and CIE L*C*h° (as used by PSO).
Paper QC Measurement
1.
Measure the substrate.
2.
View results.
Color strength
Concentration value
Residual color difference
value
Simulated color of standard
Function, illum/obs, and
Measurement Condition
selected
Simulated color of sample
K/S value at wavelength
Simulated paper standard
Function, illum/obs, and
Measurement Condition
selected
Simulated color of sample
Pass/fail/warning indicators
