Once that is said, it should be possible to work in a general-purpose open source 2d printer. The open community has achieved bigger goals. The biggest problem I can see is the entry barrier: to get a very basic printer, you have to invest thousands of time with a lot of knowledge in different areas, when a basic printer, even from the large companies, is not very expensive.
I think that one of the only chances we have for that to happen is that a company frees its designs and patents and community starts working from there.
It'd probably be easier to make a nice block alphabet for a plotter and then just print your documents as biro drawings.
But again, feeding paper seems like a very fiddly problem.
Printer paper came in long, laser-perforated sheets with tabs. You'd load in the start and one sheet pulls in the next.
https://en.m.wikipedia.org/wiki/Continuous_stationery
The crank you had to put into the front of the printer to get the steam-powered engine turning could jam in the transmission, though, and you had to watch the temperature of your coal-fired ink tank so it didn't over-boil. Those "electronic" printer guys thought they were so fancy.