Digital BW, The Print

I've been using QTR but I recently tried to do a black only (BO) print directly from Photoshop CS with the settings as described in the Clayton Jones article (http://www.cjcom.net/articles/digiprn3b.htm) using Epson Matte Black ink.

The image I got was much warmer then I like (and was expecting). I did a test prints on both Epson Heavyweight Matte paper and Hahnemühle Photo Rag. The PR print is brighter as one might expect but both are warmer then I expect. 

Is this normal? The article referred to using Eboni ink. Would this produce significant differences from the Epson ink?

Also, when comparing the same print made on PR with QTR there is a rather obvious increase in apparent sharpness of the print (I'm making ~8.5x11" prints). Under a loupe the QTR print is much smoother.

This brings up maybe the bigger question... why use BO printing over a RIP at all?

Dave.
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David Keenan, ausdlk@... on 9/24/2005