Digital BW, The Print

> 
> If I was custom mixing a set of 3 black inks, I would probably set 
> the light and medium a bit higher, like 65 to 75 for LLK and 50 for 
> LK. That would give you better control in the highlights, to fill in 
> the mid tones just overlap the LK and K a little bit longer. Yes it 
> would give you more ink on the paper with this method, but if you 
> aren't dealing with full color this shouldn't be much of an issue. 
> But this is just the way I would probably do it.
>
I compared this to piezo iQuad : K3 precisely misses a kind of LLLK, 
other partitions are amazingly similar. The issue is the highlight and 
that 0-4% portion, other segments look ok on the paper. I have not 
achieved clean smoothness in the highlights despite all possible 
partitionnings. So when editing the file, I keep this in mind and make 
sure I am far enough from 0 in the file values. QTR-ICC ends the job 
for me. Last HPR is not bright white so it partly hides the deficiency 
of the highlights: not intellectually satisfaying, but practically 
acceptable as long as you print large image. I feel the way it's done 
it not so bad for 3 partitions, besides I've restricted myself to 
1440dpi, it might improve at 2880dpi.

Olivier