Carbonless paper is a type of paper that does not require the use of carbon paper to make copies. It is made up of two or more layers of paper, with a coating of micro-encapsulated dye or ink on the back of each sheet. When pressure is applied, the dye or ink is released and transferred to the next sheet, creating a copy. The term TRIB is an acronym for Transfer, Release, Image, and Bond, which are the four steps involved in the process of carbonless paper.