Jerry,
You wrote:
>... are there any DYE based quad inks with a super dense,
>deep black that are supposedly archival, and would last at
>least 25 years under low light conditions?
I don't know much about the Lyson offerings. As I recall there may be
metamerism issues as well as dye and pH differences.
John Nollendorfs, Lincoln Ink & Paper, www.lincolninks.com , was mixing one
for a while. I also don't know much about that one.
Paul
http://www.PaulRoark.com