Inkless Printer

I'm pretty sure a laser could precisely burn normal paper to a sufficient dark brown colour to a similar quality as a photocopier. I for one would be happy to forfeit a loss of quality and colour for a printer that never requires and consumables. Why does nobody manufacture an inkless / tonerless printer? Is it because they don't know what to call it... It's not really a printer is it, maybe I'm just searching for the wrong thing...