Digital BW, The Print

To all you digital photo chemists out there: does anyone have any idea  what the Epson 
BLACK pigments are composed of chemically? I vaguely remember Paul saying that he 
thought the Ultra chrome matte black was carbon pigment, similar to the composition of 
some of the new generaton of quad pigments out there. What about the CF Epson Archival 
inkset? Does anyone have knowledge of them also?

I know that Epson's pigments are "encapsulated" with a poly resin, presumably to make 
them flow better through the nozzles without as much clogging ( according to Epson's 
reps) and give better moisture and light protection, if I remember correctly.

Someone on one of these lists also made the statement that the Cf inkset might have 
some dye in it, but I think that was just speculation. This does not make sense to me 
because of the WR permanency rating that gave this inkset much higher ratings, and also 
the fact that if a dye was incorporated ( which I think it is not) the dmax would be a lot 
better than it is, which is less than the carbon pigments used in other inksets. Since that 
inkset was designed for outdoor as well as indoor imaging, that would certainly be counter 
productive.

Just curious. I like to know as much as I can about these things from unbiased sources.

John