Carbon paper is also called copier paper, placed between the original and a blank sheet to be copied onto. It is used for making one or more copies simultaneous with the creation of an original document.As the user writes or types on the original, the pressure from the pen or typeface deposits the ink on the blank sheet, thus creating a "carbon copy" of the original document. This technique is generally limited to four or five copies. Beside carbon paper, carbonless paper can achieve the same function.