This etymology can also explain why, even originally, "cc:" was used to list recipients who received typed copies and not necessarily carbon copies. This alternative etymology explains the frequent usage of "c:" when only one recipient is listed, while "cc:" is used for two or more recipients of the copies. It is still common for a business letter to include, at the end, a list of names preceded by the abbreviation "CC", indicating that the named persons are to receive copies of the letter, even though carbon paper is no longer used to make the copies.Īn alternative etymology is that "c:" was used for copy and "cc:" indicates the plural, just as "p." means page and "pp." means pages.
CARBON COPY MANUAL
Carbon copies are still sometimes used in special applications: for example, in manual receipt books which have a multiple-use sheet of carbon paper supplied, so that the user can keep an exact copy of each receipt issued, although even here carbonless copy paper is often used to the same effect.
The use of carbon copies declined with the advent of photocopying and electronic document creation and distribution (word processing). The top sheet is the original and each of the additional sheets is called a carbon copy. Four or five copies is a practical limit. More than one copy can be made by stacking several sheets with carbon paper between each pair. The pressure applied by the writing implement (pen, pencil, typewriter or impact printer) to the top sheet causes pigment from the carbon paper to reproduce the similar mark on the copy sheet(s). A sheet of carbon paper is placed between two or more sheets of paper.
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