Etching - Printing technique in which a metal plate is first covered with an acid-resistant material, then worked with an etching needle to create an intaglio image. The exposed metal is eaten away in an acid bath, creating depressed lines that are later inked for printing.

Lithography - was invented in 1798 in Germany by Alois Senefelder.
Lithography was the first fundamentally new printing technology since the invention of relief printing in the fifteenth century. It is a mechanical planographic process in which the printing and non-printing areas of the plate are all at the same level, as opposed to intaglio and relief processes in which the design is cut into the printing block. Lithography is based on the chemical repellence of oil and water. Designs are drawn or painted with greasy ink or crayons on specially prepared limestone. The stone is moistened with water, which the stone accepts in areas not covered by the crayon. An oily ink, applied with a roller, adheres only to the drawing and is repelled by the wet parts of the stone. The print is then made by pressing paper against the inked drawing.

Serigraphy (Silk-screen) - A printing technique that makes use of a squeegee to force ink directly onto a piece of paper or canvas through a stencil creating an image on a screen of silk or other fine fabric with an impermeable substance. Serigraphy differs from most other printing in that its color areas are paint films rather than printing ink stains. visit www.charlotterilewebb.com to see her exhibit of hand-pulled silkscreen prints.

Woodcut - Printing technique in which the printing surface has been carved from a block of wood. The traditional wood block is seasoned hardwood such as apple, beech or sycamore. Woodcut is one of the oldest forms of printing dating back to the 12th century.

Mezzotint - (mezzo = half + tinta = tone), a reverse engraving process used on a copper or steel plate to produce illustrations in relief with effects of light and shadow. The surface of a master plate is roughened with a tool called a rocker so that if inked, it will print solid black. The areas to be white or gray in the print are rubbed down so as not to take ink. It was widely used in the 18th and 19th centuries to reproduce portraits and other paintings, but became obsolete with the introduction of photoengraving.

Monotype - One-of-a-kind print made by painting on a sheet of metal or glass and transferring the still-wet painting onto a sheet of paper by hand or with an etching press. If enough paint remains on the master plate, additional prints can be made, however, the reprint will have substantial variations from the original image. Monotype printing is not a multiple-replica process since each print is unique. visit www.charlotterilewebb.com to see her exhibit of mono-prints. Its a wonderful web site.

Aquatint - Printing technique capable of producing unlimited tonal gradations to re-create the broad flat tints of ink wash or watercolor drawings by etching microscopic cracks and pits into the image on a master plate, typically made of copper or zinc. Spanish artist Goya used this technique.

Blind - Printing using an uninked plate to produce the subtle embossed texture of a white-on-white image, highlighted by the shadow of the relief image on the uninked paper. This technique is used in many Japanese prints.

Collograph - Printing technique in which proofs are pulled from a block on which the artwork or design is built up like a collage, creating relief.

Drypoint - Printing technique of intaglio engraving in which a hard, steel needle incises lines on a metal plate, creating a burr that yields a characteristically soft and velvety line in the final print.

Engraving - Printing technique in which an intaglio image is produced by cutting a metal plate or box directly with a sharp engraving tool. The incised lines are inked and printed with heavy pressure.