Digital BW, The Print

Denis,

>... If 3MK works for matte paper, could one
>use 3 of the remaining channels for a 3PK glossy approach?

The 260 RC inks (bulk) are the ones I'd look at.  See
http://www.paulroark.com/BW-Info/R260.htm  for a description of the inks.
The PKN and PKC (cooler than the PKN) and midtone dilutions of them might be
very interesting in the 1800. I'd use QTR, not the Epson driver.  I suspect
the 1800 will band with just one channel, so it might take some
experimenting to see what makes the best combination.  I don't really think
the light midtones are needed with a 1.5 pl printer.  My first shot might be
to try the PKN with a couple neutral dark midtone channels.  Two bottles of
ink and three carts should be a reasonable start.  

Paul
www.PaulRoark.com