This is probably a simple question but I have to ask.
I'm using a Colorburst RIP to convert from, say, GRACoL2006_C1 to my Epson
printer. I use i1Profiler to generate both profiles.
I'm using Epson Standard Proofing 240 paper, which has "nominal" CIE Lab
coordinates equal to 95.00 0.00 -2.00 :
https://epson.com/For-Work/Paper/Pro-Imaging/Standard-Proofing-Paper-(240)/m
/S045112
GRACoL2006_C1 official spec has this Media White Point for the substrate :
> 95.00 -0.03 -1.93
My Epson paper CIE Lab coordinates, as measured with a Minolta FD-9 (M0 vs
M1 vs M2 is all the same), turns out :
> 94.00 0.22 -1.78
Not "far".
I insist on setting the Rendering Intent in the RIP to Absolute Colorimetric
but I end up with some fractional Cyan dot percentage on the output (0.4C
0.0M 0.0Y 0.0K)?
I don't suppose there is a way to "force" the Media White Point to remain
"zero" through any one of i1Profiler's Advanced profile generation option?
I noticed i1Profiler has a drop down menu called "Profile White Point" (not
documented anywhere I found?) among its myriad of profile generation
settings. It offers:
- Default (Recommended);
- Custom (which lets me enter any CIE Lab coordinates I care)
- From saved ICC profile (not useful in this case, as far as I can see?)
- From saved measurement (not useful in this case, as far as I can see?)
I know some RIPs offer the option to keep "Zero" at "Zero", on output, but
wonder whether it can be done at profile generation time through i1Profiler?
In the past, I managed to do this through "editing curves" in the printer
profile with HDM ColorToolbox, in the Edit tab (may have to resort to the
same "trick" this time again.) or through the Proof Correction tab (they
have a specific option called "Keep paper white") which allows iterating
down a pair of CMYK to CMYK profiles conversion.
Any help is appreciated.
/ Roger Breton
www.graxx.ca