Ideally I am looking for a printer with
- opensource - Hardware, firmware, drivers, All OS support,
- No Shenanigans like mixing up colors, wasting ink in storage, hidden codes
- Easy to maintain and repair,
- low ink cost
- No Wifi or bluetooth
Brother HL-1212w fully FOSS USB only monochrome laser. If you have a router with USB and openwrt installed you can share the printer over the network. Cheap old printer but works great for just printing.
My experience with a LAN/USB brother printer/scanner helped me forget my HP nightmares, they have drivers for Linux althought Linux recognizes it and uses it without issue or their drivers, and still got a firmware update the other day after more than 10 (i think) years that I have it. Model DCP-L2540DN.
This probably isnt what you’re looking for, but you never specified a page size so…
I love thermal printers, like the ones that print receipts at the cashier. There’s no ink; you just replace the little roll. They are great for text, just pipe a shopping list to
lpand out it comes.I have a printer for full-sized sheets but there’s no comparison to the thermal on OP’s criteria. Except open hardware… I don’t think there are any printers today that provide schematics.



