Re: FOGRA39 CMY-only profile (no black)
Re: FOGRA39 CMY-only profile (no black)
- Subject: Re: FOGRA39 CMY-only profile (no black)
- From: Graeme Gill <email@hidden>
- Date: Thu, 07 Jan 2016 11:17:18 +1100
Jorge . wrote:
> I stumbled onto Argyll’s fakeCMY (http://www.argyllcms.com/doc/fakeCMY.html), the
> description of which sounds somewhat related to what I want, but not quite so:
Probably not what you want. What you want to do is 'print' a CMY chart
through a FOGRA39 printer.
Something could probably be hacked together using ArgyllCMS :-
create a CMY test chart, edit the .ti1 to add a K=0 column,
use fakeread to lookup the CIE values through a FOGRA39 profile,
edit the resulting .ti3 to remove the K column, and
then make a CMY profile from it.
Another approach might be to make a CMYK profile and set a very
low maximum K channel value.
> Regarding how the resulting profiles behave, I expected “zero black generation” to
> produce no black ink whatsoever, but apparently it only means “as moderate with black
> as possible”.
Correct - 1st priority is to stay within physical limits (i.e. TAC etc.).
2nd priority is to reproduce the required color. 3rd priority is to do
it using the target black curve.
Try using the colprof -L option instead. i.e. try "-L 0" and see what happens.
Graeme Gill.
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