Does anyone know if the ink cartridges from the Japanese version will work in the 3800/3850?
On the older, large format printers, we had ways of telling the printer to ignore the country coding on the carts. There were some side effects though (losing ink count on the carts, etc.)
I doubt that you have that option on the 3800/3500. Not sure though.
The "work around" would be to take the chips off your carts at home, put them on these carts in place of the ones that come on them, and reset them.
Or, suck the ink out with a syringe and squirt it back into one of your carts, and reset.
Not a lot of trouble, but only worth it if you are saving quite a bit, like 50% or so.
Can't answer on the papers. Good luck!
Best,
Michael