Quote Originally Posted by paul ron
It seems the papers I once used in the 70s are very different than the papers of today. I see these differences in todays emulsions and that raises the age old question of longevity. Yes the old papers have a proven track record but they suposedly had more silver compound in them. According to another discussion I saw here, new emulsions are silver starved. From what I read about emulsions of Agfa, Kodak and Illford, they are all using the same compounds in both their RCs and FB papers.

Since New RC and FB are both using the same emulsions but have different bases... will modern papers hold up as well as their grandparent's papers? Which one is better if both emulsions are the same? Does the base material realyl make any difference if the emusions fail?

I believe the stability problem of RC is due to the base material degrading, not the emulsion. As far as I know, if properly processed, the emulsion will keep for longer than the paper it's printed on. In RC, the resin coat and the emultion (I believe) react, causing any archival processing useless. That, anyway, is what I was told by a professor, and he could be wrong (but then and again, he did have his Master's in photography).

In fiber, the emulsion is right on the paper, and nothing sits on top of it. Hence, no malign reactions take place... In the end, the problem with RC is the plastic.