(and seriously, who the hell exposes a printer to the internet?)
Someone who has a printer/scanner that they want to be able to scan/OCR/upload documents to a shared service without physical intervention, have it grab documents/images from the server to print out, etc. and get firmware updates so it keeps pace with changes to its compatible services.
(Though to be fair, I leave my Brother printer/scanner unplugged most of the time so it doesn't waste ink by compulsively cleaning the fucking cartridges every few days.)