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Intaglio (pron.: // in-TAL-ee-oh) is the family of printing and printmaking techniques in which the image is incised into a surface, and the incised line or sunken area holds the ink. It is the direct opposite of a relief print.
Normally, copper or zinc plates are used as a surface or matrix, and the incisions are created by etching, engraving, drypoint, aquatint or mezzotint. Collagraphs may also be printed as intaglio plates.
In the form of intaglio printing called etching, the plate is covered in a resin ground or an acid-resistant wax material. Using an etching needle, or a similar tool, the image is engraved into the ground, revealing the plate underneath. The plate is then dipped into acid. The acid bites into the surface of the plate where it was exposed. Biting is a printmaking term to describe the acid's etching, or incising, of the image. After the plate is sufficiently bitten, the plate is removed from the acid bath, and the ground is removed to prepare for the next step in printing.
To print an intaglio plate, ink is applied to the surface by wiping and/or dabbing the plate to push the ink into the bitten grooves. The plate is then rubbed with tarlatan cloth to remove most of the excess ink. The final smooth wipe is often done with newspaper or old public phone book pages, leaving ink only in the incisions. A damp piece of paper is placed on top of the plate, so that when going through the press the damp paper will be able to be squeezed into the plate's ink-filled grooves. The paper and plate are then covered by a thick blanket to ensure even pressure when going through the rolling press. The rolling press applies very high pressure through the blanket to push the paper into the grooves on the plate. The blanket is then lifted, revealing the paper and printed image.
Brief history 
Intaglio engraving, as a method of making prints, was invented in Germany by the 1430s, well after the woodcut print. Engraving had been used by goldsmiths to decorate metalwork, including armour, musical instruments and religious objects since ancient times, and the niello technique, which involved rubbing an alloy into the lines to give a contrasting colour, also goes back to late antiquity. It has been suggested[by whom?] that goldsmiths began to print impressions of their work to record the design, and that printmaking developed from that.
Martin Schongauer was one of the earliest known artists to exploit the copper-engraving technique, and Albrecht Dürer is one of the most famous intaglio artists. Italian and Netherlandish engraving began slightly after the Germans, but were well developed by 1500. Drypoint and etching were also German inventions of the fifteenth century, probably by the Housebook Master and Daniel Hopfer respectively. The golden age of artists engraving was 1450–1550, after which the technique lost ground to etching as a medium for artists, although engravings continued to be produced in huge numbers until after the invention of photography. Today intaglio engraving is largely used for currency, banknotes, passports and occasionally for high-value postage stamps. The appearance of engraving is sometimes mimicked for items such as wedding invitations by producing an embossment around lettering printed by another process (such as lithography or offset) to suggest the edges of an engraving plate.
- Plates are usually made from copper or zinc
- Formerly used extensively for high-quality magazines, fabrics and wallpapers
- Common uses still include some postage stamps and paper currency, at one time used for all mass-printed materials including banknotes, stock certificates, newspapers, etc.
Other forms 
Apart from intaglio, the other traditional families, or groups of printmaking techniques are:
- Relief prints, including woodcut, where the matrix is cut away to leave the image-making part on the original surface. The matrix is then just inked and printed, not wiped as described above.
- Planographic, including lithography, also known as "offset printing", where the image rests on the surface of the matrix, which can therefore often be reused.
- Both intaglio and relief, as well as planographic printing processes, print a reversed image (a mirror image of the matrix), which must be allowed for in the composition, especially if it includes text.
Famous intaglio artists 
- Albrecht Dürer
- Edward Hopper
- Francisco Goya
- James Abbott McNeill Whistler
- Käthe Kollwitz
- Lucas van Leyden
- Ludwig von Siegen
- Max Klinger
- Pablo Picasso
- Krishna Reddy
See also 
- Photogravure—an intaglio photo-printmaking process
- Line engraving
- Viscosity printing
- History of printing
- Strauss, Victor (1967). The printing industry: an introduction to its many branches, processes, and products. Washington: Printing Industries of America. ISBN 0835202720.
- Mustalish, Rachel (2003). "Printmaking Techniques of the WPA Printmakers". In Lisa Mintz Messinger. African American Artists, 1929-1945: Prints, Drawings and Paintings in the Metropolitan of Museum of Art (Metropolitan Museum of Art). Yale University Press. pp. 86–88. ISBN 0300098774.
- Mueller White, Lucy (2002). "Intaglio Processes". Printmaking as Therapy: Frameworks for Freedom. Jessica Kingsley. pp. 108–109. ISBN 1843107082.
- Woods, Kim (2006). Making Renaissance Art. Yale University Press. ISBN 030012189X.
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