When two copies of a receipt are needed, carbonless printing paper is the way to go.
What is Carbonless Printing Paper?
Carbonless paper features a convenient two-ply design which produces both a yellow and a white copy. This results in both a copy for you and a copy for the customer. This type of paper is often used in credit card machines.
How Does Carbonless Paper Work?
Carbonless paper uses a traditional register printer with a standard register ribbon.
The ribbon prints onto the first copy, just as with traditional paper.
As it prints, the pressure from the printing transfers a copy onto the second sheet for a duplicate print.