What is the wax paper called the Bottle redemption machines use?

Question

at my local grocery store there is a can machine and it uses this paper for receipts. its sort of feels like it has some sort of wax coating on it but its not quite wax paper. is there any special name for this paper?

Answer 1

Thermal printing paper.  It turns black when and where itis heated and is used because the printers that use it are cheaper.  Heat some witha match and it will turn black.