Digital BW, The Print

> http://studio-nelson.com/odd2200a.htm

Very interesting stuff, Peter.  Regarding your comment here:

"This suggests to me that the Epson Matte Black ink is forumulated 
very differently from the other inks, not just in terms of its 
pigment, but also its vehicle, since it has such different ability to 
be absorbed into the surface."

You might want to read this explanation from inkjetart, if you 
haven't seen it already:

http://www.inkjetart.com/pro/7600_9600/black_mode.html

They explain that matte black ink, unlike the photo black, is not 
micro-encapsulated with a polymer resin coating.  They also state 
that, "Using a DUAL Matte Black (Matte Black + Matte Black) 
eliminates the micro-encapsulated Light Black, and allows for even 
better printing on most uncoated papers."

Dan