Digital BW, The Print

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, J Vee 
<j.vee@g...> wrote:
> I don¹t know if anyone is interested, but I still also print 
traditional
> Carbon, where one makes your own ³tissue² (watercolor pigment 
mixture in
> gelatin suspension) for printing.  I can say categorically that 
matamerism
> is certainly present.  J vee

What is "traditional" carbon?    Various kinds of carbon black 
(channel black, charcoal black, bone black, etc) have been in use 
for centuries,if not millenia.  The pigments used in the black inks 
in my collection of stone-plate lithographs make between 1895 and 
1915 (I think 100 years old qualifies as "traditional") are still 
perfectly black and exhibit no metamerism.  

Also note that many watercolor blacks are NOT carbon black - they 
are often aniline black.   You can't go by the name on the tube of 
paint - for instance, many "cadmium red"s don't actually contain 
cadmium anymore.

Can anyone cite any authoritative sources for what the black ink 
(either OEM or 3rd party) is ACTUALLY using for a pigment?   The 
Epson UC Matte Black seems awfully warm for a "traditional" carbon 
black, whatever that is.