NCR (no carbon required) or carbonless forms, like the name suggests, have eliminated the need for carbon paper between sheets to create multiple copies of the same form. The paper is chemically treated to transfer the impression from the first page to the subsequent pages with very little pressure.
NCR forms have a myriad of uses with some of the most common being invoices, statements, purchase orders, contracts, work orders, applications and receipt books and receipts where multiple copies are needed for customers, sales people, accounting, agents, mechanics, workers, etc.