Hi Terence, Fiery Printer Profiler (part of Fiery Color Profiler Suite or Fiery XF Color Tools) can create a CMYK ICC profile from a chart consisting of only 46 key patches, which contains spectral data of the CMYK primaries, tints and several overprint colors. If you can get access to the software (not necessarily the latest version as this solution exists for several years now) you can give it a try. The challenge is to create artificial spectral data that feed the algorithms well, so the data from real prints is typically the best to use. That said, a measurement file from a real print of the 46 patch chart can serve as the basis to modify the spectra of the individual patches until the gamut has reached the target size/shape. The algorithms may have some restrictions/limitations so in the end it might not work the way you would like it to have. But if you have enough time to (iteratively) modify the spectral data it may be well worth a try. You can start with changing one primary color spectrum and the spectra of the respective overprint patches to minimize the effort and see if it goes into the right direction. Hope that helps. Best regards Claudio Disclosure: As an EFI employee, which is the company that sells the above mentioned software solutions, I do not intend to do marketing or advertising for our software, but give a reasonable answer/solution to the OP’s question.

Am 19.12.2014 um 20:46 schrieb Terence Wyse <wyseconsul@mac.com>:

While creating custom or synthetic RGB profiles is pretty straightforward, does anyone here know of any tools to create synthetic *CMYK* profiles?

I’m looking for something that will allow specifying of CMYK primaries and secondaries and a customizable TRC and then build an ICC profile.

The intent here is to build something like a “reference” or simulation profile for digital press and/or inkjet devices. I’ve gone through all the ISO 15339 CRPC profiles but none of them have the kind of gamut boundaries that I’m looking for..

Only tool that I can think of at the moment is the rather antiquated Custom CMYK tool in that’s been in Photoshop for a very long time…I’m not confident it will give me what I need.

Regards, Terry Wyse

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