Catalogue Raisonne'   A complete, annotated catalog of the works of a particular artist. Considered as the definitive source, providing details such as title, medium, date, print and image size, edition size, publishers and printers. Pronounced "res-o-nay."

Chine Colle'   A method of selectively adhering one sheet of paper to another during or after the printing process.

Chop Mark  An insignia of the printer or publisher, usually a small embossed seal of the printer's name and logo. Most often visible in the lower right or lower left near the edge of the paper.

Collotype  A reproduction which, though made by a photomechanical printing process, is not broken up by half-tone screens so the resultant image is continuous tone. Color separation negatives are made from the original work of art, then are retouched to build up the desired density and graduation of tones. The negatives are then exposed onto a light sensitive aluminum plate, and the plate is then run on a press. A separate negative and plate are made for each color (not be confused with collograph).

Deckle Edge   The ragged edge found on some papers.

Diptych  A work of art composed of two separate pieces, usually displayed together side by side, producing one continuous image. Pronounced "dip-tic".

Drypoint, Drypoint Engraving  A process of engraving upon a copper plate with a burin, scoring deeply into the plate, creating a furrow bordered by rough, upturned edges (the burr), which hold the ink. In line engraving, the slight burr made by the burin is removed, but in drypoint engraving the burr is left. Therefore, prints taken from a drypoint engraving have a special velvety black line.

Edition   Refers to the total number of prints made from the same plates or screens, such as "there are 250 prints in this edition".

Embossing   A method of raising a design in relief on metal or paper through the use of mechanical dies or punches or plates.

Etching   A process by which graphics are taken from a metal plate, on which the drawing is bitten with acid into the surface of the plate. A clean polished copper plate (or occasionally zinc or steel), is covered with a thin coating of acid-resisting etching ground. The drawing to be reproduced is either traced onto the blackened surface of the grounded plate, or is drawn directly onto the surface, using the burin, which exposes the metal in the drawn areas. The edges and back of the plate are then coated with an acid-resistant varnish and it is then immersed in a bath of acid which attacks the metal where it is exposed. When the lightest parts are bitten to the artist's liking, the plate is taken out of the acid and the work stopped out with varnish. The process can then be repeated until the work is completed to the artist's satisfaction. The ground and varnish are then removed with a solvent and the plate is then inked. Ink is applied to the entire surface and then carefully rubbed off, leaving the ink in the bitten areas. Impressions are made on damp paper, which is forced into the ink filled lines as the paper and plate are put through a pressure press.

Epreuve d'Artiste  French term meaning "approved by the artist. " Abbreviated as "E.A.", it means the same as artist's proof.