Elena [service address] wrote:
That apparently was my understanding also, but it turns out a nonsense, since then a required -k separation should be maintained thru all the gamut irrespectively whether some colors can't be faithfully reproduced with the required black, while a -K one should be allowed to change for a faithful reproduction, even at expenses of discontinuities. But that seems not the case (as I already discussed weeks ago)
Argyll does not, and is not intended to work in such a fashion. It is a "closed loop" or "measured" color management system. Graeme Gill.