I was hoping to see a printer that say a prepper could build from scratch. This design 100% depends on commercial print cartridges containing the actual print-head. Once that clogs, you need to get another one, good luck getting one once production has stopped.
Also, if you wanted to avoid yellow dots, not sure if this is built into the cartridge or the firmware of the rest of the printer.
Now, I understand that would be hard to pull off. Maybe one could build a deskjet500 equivalent one.
Laser printers are quite complex as well, you need too many non-easy to build from scratch parts.
Maybe a dot matrix printer is possible.
I know for sure you can retrofit older electric typewriters, and those are pretty repairable.
"From scratch", ie raw materials only, probably limits the results to plotters until you've bootstrapped some presicion machinery. And electronics. How many parts you're allowed is going to be an arbitrary choice anyway.
But the heads being disposable and one day unavailable is kind of a valid concern if a new source doesn't eventually turn up.
I had thought about a post-apocalyptic prepper printer once, my conclusion was that you can just have a fax machine and a laptop. They're considered thoroughly obsolete, and almost free to take in used markets as well.
Also, if you wanted to avoid yellow dots, not sure if this is built into the cartridge or the firmware of the rest of the printer.
Now, I understand that would be hard to pull off. Maybe one could build a deskjet500 equivalent one.
Laser printers are quite complex as well, you need too many non-easy to build from scratch parts.
Maybe a dot matrix printer is possible.
I know for sure you can retrofit older electric typewriters, and those are pretty repairable.