Digital BW, The Print

Antonis,

I enjoyed your description of the IJC linearization and the issues found.
I don't own a 2200 but Carl Schofield has done some work on the curves
for it using QuadToneRIP.  During that, we also ran into the issues of 
adding light-cyan and light-magenta to neutralize the tone.  In fact I think
trying to compensate for the added density was the major effort in the
cool curve.  Carl also had some nice plots of density. See:

http://harrington.com/QTR-2200.pdf

I see you did some sepia curves lately, did you notice much metamerism
in those prints?   All along the yellow ink seems to have been blamed
for metamerism -- I wonder how true that is.

Roy