Actually the problem is with a profile I created for my printer. Call it 
PrinterX

AdobeRGB White -> PrinterX results in dirty white
USSheetfedCoated.icc White-> PrinterX results in dirty white

AdobeRGB and USSheetfedCoated are the input profiles only.

Since both LCMS and ICM report the same conversion from RGB/CMYK white 
to PrinterX CMYK resulting in a non-pure white It can only be in the 
profile I made. Ive remeasued and remade the profile with the same 
results. So Im thinking its a problem with the profile or an obscure 
issue with say cromatic adaption of the white points not being correct 
or in the LUT.

The question is where in the transformation process is this tiny error 
happening? What I would like to know is a way to tell if its A) the 
white point in my profile, B) Its in the LUT or C) the input/output 
curves for the LUT.

Glenn


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