Digital BW, The Print

I use an Epson 2100 with Epson UC inks and have been experimenting 
with QTR to see if I can optimise the print quality. I have ordered 
some Piezography inks so while I am awaiting their arrival I want to 
establish a benchmark of what the Epson inks can achieve if 
optimised. 
I like the warm tones I get by just using the Mk and Lk inks but like 
the smoothness I get when I add a little LM and LC to cool the print 
a little. To see if I can improve smoothness in warm prints I have 
been trying printing at 2880 dpi. I built some linearised curves 
using my newly acquired Printfix Pro 2 (I love that little toy) for 
2880 printing (ink limit ended up at 37!). I used Epson Archival 
Matte paper (called Enhanced Matt I believe in most countries) for 
the experiments discussed above together with Epson Mk and Lk.

After a lot of time, ink and paper expended I have to report that I 
cannot see any appreciable difference compared to the prints made at 
1440 dpi.

Also, to validate the linearity of my linearisations, I printed a 
radial gradient. Again I was a little disappointed to see some 
distinct steps that make my radial gradient look a little like a 
bullseye target.

My questions of the group are:

1) Are my findings regarding 1440 vs 2880 printing consistent with 
the experience of others or should I persist?

2) Can I reasonably expect a smooth radial gradient from just K and 
LK on an Epson 2100?

3) If so how do I "tweak" the linearisation to achieve the smooth 
radial gradient? Bear in mind I have already linearised using the the 
tool in QTR.

Thanks and regards

Alistair Owens
owens@...