Wouldn't work. The print needs to outgas for at least 24 hours before you coat it with anything, otherwise you'll get bubbling and other forms of coating failure.
Really. In your current world, maybe not. But in my world a technological breakthrough just might. Like say putting an embedded spectrophotometer in a printer - outrageous at the time, but definitely ground breaking. I was thinking more of a chemically compatible finish (ground breaking in design) that perhaps fused to the print, not unlike gloss enhancer, but tougher. Possibly a first coat which hardened by UV light or something and instantly fused. We're thinking creatively here, right? You know, think tanking? Unless dreaming is off the table...
Come to think of it, I have hand rolled glamour gloss II in a special formulation onto prints immediately after printing and then stretched after dry. I still have the prints and they still look great. Come to think of it that was 6 years ago, printed with my Z3100 44" and they're still perfect. I normally let the prints hang for a long time from my Z3200ps 44" printer, now however, since I send them off for stretching.
Just curious, have you ever experimented with coating prints prior to the "24 hour waiting period" coming from your own printer? BTW are you using Z3100 or Z3200? (And what size). Also, how are you coating your prints? (canvas, that is).
Thanks - Mark