Profiling CMYK + 6 inks

TipiColorShop

New member
Hello there,

I'm currently helping a student profiling his printer Canon imageprograf pro-300 with Xrite i1profiler and an 'i1isis 2'
the software is giving me the possibilities of creating a profile for CMYK + 4 inks.
The printer the student is using uses the following combination
Y/M/C/R/PC/PM/Gy/PBk/MBk

Can u let me know how I need to insert the LAB values in the software according to the printer inks ? I'm a bit confused

thanks
 

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bteifeld

Member
This is actually 5 color- Y, M/PM(PM is like LM)C/PC(PC is like LC),
PBk(photo black), MBk(matt black), Gy(Gy is like LK(light black))

You choose one of MBk or PBk as part of a media type selection
for K(black), and Gy is essentially an LK(light black).

R(red) is the only other full tone ink, so you have a CMYK+R
printer, or from i1profiler's point of view, CMYK+1 ink.

If you are printing through MacOS or Windows, you are working
with a driver that expects to be using RGB profiles- multicolor
profiling is usually only available through RIP software like
Ergosoft, Onyx, Caldera, Colorgate, and GMG. In those cases,
the RIP software has an internal profile generator.

You might want to mention whether you are just printing
through MacOS or Windows, or if you are using RIP software.

Hope this is helpful.
 

TipiColorShop

New member
Dear Bteifeld

You are right, the person will be printing from a macos and without a RIP.

thank you for you answer but the question about the LAB value is still puzzling me..
 

bteifeld

Member
For your specific situation, under macos, you should have no need to
fill in LAB values in i1profiler. You should be choosing RGB.

If you were using a RIP where you were using i1profiler to provide the
icc profile, and you were working with a printer with extended gamut
inks like orange, red, green, blue, and/or violet- you would print a
non-flooding 100% patch for each of the extended gamut inks,
measure the L*a*b* in each case, and use that value.

You could also just choose pantone L*a*b* for the pantones you
felt matched the equivalent of the 100% patch for each extended
gamut ink.
 

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