Digital BW, The Print

>...I print BW using Epson Printer 7600 UltraChrome, 
>ImagePrint ColorByte 6.0, Epson inkset with matte black,ColorByte 
>gray profiles with no tint on various matte papers.  ...

>Wilhelm has data, obvious reasons, only on Epson print driver, ink 
>and papers.

>Does any one have any permanence data on my configuation for BW and 
>color?
>Are Epson gloss black, matte black and light black pigmented inks 
>per carbon? ...

The Epson Material Safety Data Sheets indicate that the Epson UC blacks are
not pure carbon.  My tests of them, however, indicate that they are about
the same as the MIS black inks, which are said to be pure carbon.

I have not tested that combination you print with specifically, but I have
tested Epson UC inks.  My tests as well as Wilhelm's indicate that the
"carbon" or mostly carbon black pigments are the toughest things we have
available to us.  As such, assuming ColorByte runs the LK all the way up
into the highlights and uses little or no color pigments, the B&W printed
with mostly the black inks would be considerably more lightfast than the
Epson driver "B&W" prints that use a lot of color pigs.  So, you can safely
assume that you're better off than the Wilhelm tests.

I hope this is helpful.

Paul
www.PaulRoark.com