My real (technologically challenged) question is this: Since RA4 paper can be 'written' with lasers, does that virtually guarantee its continued existence? In other words will RA4 (at least for this formulation) be continued, thus also guaranteeing the ongoing ability to darkroom print onto this paper as well?
If 'yes', then that must also say 'yes' to the RA4 chemistry as well, true or not? - David Lyga
You are right David! RA4 will survife!
Those sorts came up many years ago. Ink jet printing is quite OK - but RA4 prints (even from digital) has bot some advantage. And everything concerning photography what is related to digital photography will not die - in the shorter term.
Bad future is to equipment exclusive for film photography - if it is with further avaiability it is getting
higher ....and ....higher...and......priced! Regarding paper sheeds to store film stripes for example.
It could not the problem to be that worldwide paper industries seams unable to produce such storage equipment. If there is demand it can be produced.
But it is like a market from Monopol structures - they offer the stuff but you have to pay !
At the end (from horrable pricing) the demand is indeed going to zero!
But no fear with RA4 David (laser systems are printing onto RA4) so billions of digital
Photographers with an aceptance of just 0,478 % to real "photo paper " enlargements
take care that the stuff you need are avaible for NORMAL pricing (also chems of course)!
But this would not mean your RA4 kits and paper for darkroom will be produced ans longer
(>10years

?????) that would mean you can get your papers from rolls! That would mean you can get your chems from 20L kanisters a.s.o think about!
RA4 in 60x90 cm for darkroom will not die - but it will come expensive! But the alternate then is
90cm x 20Meter (for the big labs [Posters]) so manufacturers want to be payed royally that day
(in some years) David Lyga want to order 10sheeds of 40x60cm RA4.

That is the true danger. In addition you will also just get the 2 - 4 sorts of papers the big labs
have in use! Because darkroom is a smallest nicht market in 10years for sure.
But RA4 will survife from my point min.>15 years!
with greetings