Even if I'm a proponent of reducing paper usage and planting new trees, I can think of some cases where keeping
some printed paper documents could still have some benefits even nowadays, IMHO.
* You need to travel in some places with no good access to internet or power source (as in a far far away country, or as in a local subway/underground of ill repute after 9pm),
* You thought it would be nice to delete all your original printed copies after using a JGIB2 scanner,
* You don't have the hardware or software to read your old digital copies,
* Some obtuse administration refuse your digital copies,
* Some benevolent but overly attached agencies, or some malevolent people, are trampling with your data in the cloud,
* A Carrington-class events occurs for real,
* And so on ...
but luckily, all of this never ever happen, right ? ;-)
As for the OP printer design it seems great, but when I see the 2 meters stack of paper in the illustration, I can't help but think that the printer will ran out of battery or ink before the middle of the stack.