When the CMYK/nCLR source of the reference is selected it is possible to select the given ICC Profile and define individual Inks percentage. Reference Lab values will be calculated from the profile using Absolute Rendering Intent.

Please note that the Operator should not mix measurement conditions - if the profile is created with M1 then M1-based Color Specification Should be used. The ICC Profile defined in Measurement Report ( upper window) might be different from the selected source of Reference.

In this example, a Substrate measurement has been performed before to get suggestions for density corrections

Correction Tab

For CMYK/nCLR a dedicated tab is available, which helps the Operator to see the calculated percentage of correction. It helps to understand that current ink may have some kind of contamination - and the Operators know the values in numbers.

Presented trends are not direct suggestions - but can be very useful to understand the potential issues.

Please note that original ICC Profile data are corrected based on Substrate measurements using the SCCA formula. All key data are listed in the table. 

Critical information 

This system is using ICC profile black generation values - generate a profile with full black generation to see values where black is printed without C, M, and Y, components. Therefore this tool requires some knowledge related to Color Management.

Follow the example below to understand it better:

GRACoL2013_CRPC.icc		GRACoL2013_CRPC_FullBLACK.icc

In this case near the neutral gray sample is evaluated to 80% Black Reference — correction values are extremely different depending on the selected ICC Profile! We recommend trying also other ICC Creation software to find the optimal one.

GRACoL2013_CRPC_FullBLACK.icc has been regenerated from GRACoL2013_CRPC.icc in i1Profiler using the FullBlack option. Both use the same dataset - only Black Generation is very different. In some processes (Digital Printing with no separate Black) - the opposite scenario for ICC Profile - with NO Black Generation can be required to better correspond to the real printing process.