Comment by wrs
This certainly applies to office printers. Printers that accept new jobs while printing have to store them somewhere. There have been many incidents of finding old documents on disposed printers because it doesn’t occur to anyone to wipe them first. This especially applies to “copiers”, because a copier is just a printer in the same box as a scanner.
But that wasn't an office printer. Yes, printers do have some memory to store what they need to print, but surely I didn't expect a document to linger there for weeks. Anyway, you're right: we may have to look at printers differently.