Printers, otherwise known in the industry as Toner Dispensers.
Manufacturers, especially Xerox, internally (and only half-jokingly) refer to printers as Toner Dispensers. It's where they make a massive amount of their revenue from.
Sure, when they're selling a printer for a price in the 10's of $k, they're not exactly making a loss, or only just breaking even on the hardware, there's still a decent amount of margin on this - but the ongoing revenue stream (and the reason they try to get everyone onto managed print services) is in selling toner, and lots of it.
Over the life of a printer (or copier, which is just a big printer with a scanner built into it) the cost of consumables will be far greater than the initial purchase price of the machine. Generally, toner is cheaper on bigger and more expensive printers (which in itself is strange as it's the same toner) - this is why if you're printing a large volume, you're better off getting a more expensive printer with cheaper toner.