Well, I go to the Duggal site and read this: "Duggal’s HD C-Prints are created on true archival photographic papers" OK, maybe somebody can tell me what a true archival photographic paper is, because I only know of C print technology for color, besides dye transfer, which doesn't really exist anymore outside of very obscure hobbyist basements. (I hope those basements are ventilated well) C prints are an almost ancient technology, always prone to quick fading, and I cringe when I see it being used in museum shows, because somebody should know better. Did Kodak or Fuji or somebody else invent a C print that doesn't fade when I wasn't looking, because I moved on to modern technology that is cheaper, much more archival, easier to produce, and just plain better?
I'm thinking that somebody invented a way to make very sharp C prints that will still fade. Maybe not. But, I swore off chemicals in 1983 when I started using computers for imagery, and, I'll never go back. Clean a Kreonite machine once, and you'll know what I'm talking about.
yeah, those Kreonite machines were something ... especially using EP-2 chemistry. The tar in those developer socks ... yuck. However, RA-4 is a much cleaner process, today's processors much simpler and cleaner running, and photographic color prints is still the least expensive technology for producing high quality photographs in a production environment. And the finish and look of Fujiflex or Kodak metallic cannot be matched by inkjet.
As far as "archival photographic papers", nothing new. Fuji has labeled all their photo papers as "fuji crystal archive
" for quite some time now, dating back to when they introduced their "century" longevity campaign. Same stuff. Depending on how it's processed, handled, mounted and displayed the time to fade varies just like with any process, and under most circumstances will last several decades. Fading really isn't the the main issue when it comes to "archival longevity", since the true enemy of most images is whether it physically lasts that long and whether there will be anyone who even cares about it in the future. Not many images will last long enough to find out how they really hold up to fading.