[Leica] The death of the silver gelatin prints

[red735i at earthlink.net (Frank Filippone)]

Fascinating reading.... and with all the caveats thrown in.... 

Now about those carbon inks..... Most ( if not all) of us own printers of
the Epson persuasion.... where can we find these super permanent inks?

Frank Filippone
Red735i at earthlink.net
At an rate, for the highest end fine are and museum work, the 100% carbon
pigment inkjet alternatives available today are close to being fade free.
In http://www.aardenburg-imaging.com/ testing, a 100% carbon pigment print
on Premier Art Smooth 205 (aka Epson Scrapbook
paper) at 100 megalux-hours of exposure (51 Wilhelm years) had a 50% density
test patch delta-e of 0.1.  That is, virtually no change at all.  The
natural, non-OBA paper delta-e was 0.5.  The 100% carbon pigment test prints
are achieving results that are many times better than the best OEM
approaches, and in the real world of unknown fade factors, all of the
approaches that use blends of carbon plus color are at risk of differential
fade of the color pigments.  This causes the print colors to go in
directions we might not like -- e.g., turning green.