>Not using a small amount of thermal paper each day is I think a pathological over-optimisation I agree, but OP is judging interest in order to produce a produ

>Not using a small amount of thermal paper each day is I think a pathological over-optimisation I agree, but OP is judging interest in order to produce a product from this concept. Using a bit of thermal paper each day on a personal basis creates negligible impact, agreed -- creating a company whose primary profit motive is the sales of equipment that produces this waste? That's a different question.