Toshiba stuffs an entire PC into a dot matrix printer – Toshiba Jimucon SJ-9500

As article alludes, this is basically an industrial or point of sale device. I imagine it in something like a car repair shop, where your order and estimate gets printed on a 3 part carbonless form. More compact than a PC with a separate printer, but I bet it's expensive. Still cool.

With USFF machines being a few hundred dollars, or roughly the same cost as any other machine from dell, hp, lenovo...

I'm shocked they bothered.

I'd be less shocked if its just an old design with an off the shelf SBC stuffed inside the case.

Factories, warehouses and so on. It really doesn't seem unreasonable machine for use in industrial uses that still want paper printouts. Also raid-1 might be option for SSDs so it is also reliable.