Digital BW, The Print

I hate to be the one who is always defending Wilhelm. But there is a
lot of evidence that he is the first one to bump into this big
difference in the Epson world of inkjet stability vs the stability
domain of chemical darkroom media and has to make corrections in his
projections because of it. It was the first version of Epson Premium
Glossy with 1270 inks that showed premature fading and staining that
existed apart from the lux level figures and confused everyone. The
culprit ended up being ozone.

This is when the all the talk about the importance of prints being
stored and shown behind glass, started. Later the talk about sprays
doubling or tripling the life of the print. 

Now.. how ones tests for these airborne contaminants and subsequently
publish stability data that takes them into consideration, well that
is a big one that I'm certainly ignorant about. This is someting we
all need to know a lot more about. 

My procedure, much to the horror of many of us out here, is to spray
everything that I need the greatest permanece for. At this point my
assumption is that airborne substances are even more toxic to inkjet
prints than uv light.

But spraying itself is toxic too, to us humans, and everyone has to
make that decision for himself for the needs of his clients. 
John