Digital BW, The Print

> > I also find the Dmax to be much better than the Gen 4 inks.
> 
> I couldn't tell from your email whether you were using 
Photorag...as the
> subject line suggests, or EAM.  It is certainly not true that the 
dmax of
> the Ultrachromes beats Gen4 on photorag...its not even close 
from the
> numbers that I've seen.  The two ink sets are close on EAM, 
however.  But
> the main issue is that the Ultrachrome Matte black seems to 
be much more
> stable.
> 
> Robert

I'm not sure where those numbers came from.

You  prompted me to take some readings using a Spectrolino in 
spot color mode.  Here are the RGB values (lower value = better 
Dmax).  All Ultrachrome values with matte black ink.
                                                           R  G  B
Ilford RC PHOTO paper..................21 20 22
Ultrachrome/PhotoRag...................34 34 34  
Piezotone/ PhotoRag.......................29 30 34
Sundance/Sommerset E.................45 45 44
Ultrachrome/EAM..............................30 31 31
Gen4/EAM......................................32 33 37
Gen4/BrightcubeSatine....................38 41 43
UltraChrome/BrightCubeSatine.... 35 36 37

I'm sorry that I don't have a value for Gen4/PR but I gave the 1200 
printer to my neighbor.  I'll try to get that ASAP.   

The black of the Epson 2200, using Photo Rag and the matte 
black ink, is very rich.

www.michaelfaye.com