Carbon paper (originally carbonic paper) consists of sheets of

paper Paper is a thin sheet material produced by mechanically or chemically processing cellulose fibres derived from wood, rags, grasses or other vegetable sources in water, draining the water through fine mesh leaving the fibre evenly distribu ...

which create one or more copies simultaneously with the creation of an original document when inscribed by a

typewriter A typewriter is a mechanical or electromechanical machine for typing characters. Typically, a typewriter has an array of keys, and each one causes a different single character to be produced on paper by striking an inked ribbon selectivel ...

ballpoint pen A ballpoint pen, also known as a biro (British English), ball pen (Hong Kong, Indian and Philippine English), or dot pen (Nepali) is a pen that dispenses ink (usually in paste form) over a metal ball at its point, i.e. over a "ball point". ...

History

In 1801,

Pellegrino Turri Pellegrino Turri (1765–1828), an Italian inventor, invented a mechanical typing machine, one of the first typewriters, at the start of the 19th century (conflicting accounts suggest 1801, 1806 or 1808) for his blind friend Countess Carolina Fan ...

, an Italian inventor, invented carbon paper to provide the ink for his mechanical typing

machine A machine is a physical system using power to apply forces and control movement to perform an action. The term is commonly applied to artificial devices, such as those employing engines or motors, but also to natural biological macromolecul ...

, one of the first typewriters. Ralph Wedgwood obtained the first patent for carbon paper in 1806. Carbon paper in its original form was paper coated on one side with a layer of a loosely bound dry ink or pigmented

coating A coating is a covering that is applied to the surface of an object, usually referred to as the substrate. The purpose of applying the coating may be decorative, functional, or both. Coatings may be applied as liquids, gases or solids e.g. Pow ...

, bound with wax. The manufacture of carbon paper was formerly the largest consumer of montan wax. In 1954 the Columbia Ribbon & Carbon Manufacturing Company filed a patent for what became known in the trade as solvent carbon paper: the coating was changed from wax-based to polymer-based. The manufacturing process changed from a hot-melt method to a solvent-applied coating or set of coatings. It was then possible to use polyester or other plastic film as a substrate, instead of paper, although the name remained carbon paper. Carbon paper was the principal medium of reproduction for

samizdat Samizdat (russian: самиздат, lit=self-publishing, links=no) was a form of dissident activity across the Eastern Bloc in which individuals reproduced censored and underground makeshift publications, often by hand, and passed the document ...

, a publication method used in the former

Soviet Union The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, it was nominally a federal union of fifteen nationa ...

in order to publish books without having to use state-controlled printing houses and risk the

censorship Censorship is the suppression of speech, public communication, or other information. This may be done on the basis that such material is considered objectionable, harmful, sensitive, or "inconvenient". Censorship can be conducted by governments ...

or imprisonment that was commonplace at the time.

Fuel cell application

A substance known as "carbon paper" is also used in

fuel cell A fuel cell is an electrochemical cell that converts the chemical energy of a fuel (often hydrogen fuel, hydrogen) and an oxidizing agent (often oxygen) into electricity through a pair of redox reactions. Fuel cells are different from most bat ...

applications. However, this carbon paper has nothing to do with the carbon paper used for copying texts. It consists of carbon microfibers manufactured into flat sheets. It is used to help as an electrode that facilitates diffusion of reagents across the catalyst layered membrane portion of membrane electrode assembly.

Modern uses

The advent of word-processing and the decline of typewriting meant that any number of copies of a document could be printed on demand, and the decline of carbon paper, which had already been partially superseded by

photocopying A photocopier (also called copier or copy machine, and formerly Xerox machine, the generic trademark) is a machine that makes copies of documents and other visual images onto paper or plastic film quickly and cheaply. Most modern photocopier ...

and

carbonless copy paper Carbonless copy paper (CCP), non-carbon copy paper, or NCR paper (No Carbon Required, taken from the initials of its creator, National Cash Register) is a type of coated paper designed to transfer information written on the front onto sheets benea ...

, became irrevocable. A few specialist or remnant uses remain. Examples of these are receipts at

point of sale The point of sale (POS) or point of purchase (POP) is the time and place at which a retail transaction is completed. At the point of sale, the merchant calculates the amount owed by the customer, indicates that amount, may prepare an invoice f ...

(though they have mostly been relegated to being

backups In information technology, a backup, or data backup is a copy of computer data taken and stored elsewhere so that it may be used to restore the original after a data loss event. The verb form, referring to the process of doing so, is "back up", ...

for when electronic POS devices fail) or for on-the-spot fine notices, duplicate checks, and some money orders (though the

United States Postal Service The United States Postal Service (USPS), also known as the Post Office, U.S. Mail, or Postal Service, is an independent agency of the executive branch of the United States federal government responsible for providing postal service in the ...

has recently converted to an electronic format), and tracking slips for various expedited mail services requiring multiple copies. In India, form-filling is on a sufficient scale that carbon paper is still widely used. As of 2013, in Canada only one eight-person company still manufactured carbon paper; in the United Kingdom one company and in the United States only two small companies. There have been some experimental uses of carbon paper in art: as a surface for painting and,

mail art Mail art, also known as postal art and correspondence art, is an artistic movement centered on sending small-scale works through the postal service. It initially developed out of what eventually became Ray Johnson's New York Correspondence Scho ...

(to decorate envelopes). Carbon paper is commonly used to transfer patterns onto glass in the creation of

stained glass Stained glass is coloured glass as a material or works created from it. Throughout its thousand-year history, the term has been applied almost exclusively to the windows of churches and other significant religious buildings. Although tradition ...

. Carbon paper disks are still used in school physics labs as part of experiments on projectile motion and position.

References

External links

''Carbon Paper Being Used in Fuel Cells''

''The Exciting History of Carbon Paper!''

A comment on carbon paper
{{Paper Printing and writing paper Coated paper Italian inventions 19th-century inventions

History

Fuel cell application

Modern uses

See also

References

External links