A cylindrical or cone-shaped vat with a power-driven agitator used to defiber and mix PULP for papermaking. Usually, dried COLOURED PULP is returned to slurry form by adding water and mixing in this m [..]

In screen printing, any material, such as paper, film, tissue, glue, lacquer, or a photographically made stencil, that is applied to the screen fabric to prevent the penetration of ink. See also Knife [..]

A set of prints related by common imagery or theme and often by technique. A suite of prints is usually published in a portfolio with a title page and a COLOPHON page.

An acid solution contained in a shallow tray in which metal plates are immersed for ETCHING.

A very hard shaped stone mounted in a wooden handle, used primarily to burnish paper, thin foil, and silver or gold leafing. Agates come in beveled flat, blunt rounded, and curved rounded shapes. See [..]

An intaglio technique for hand-depositing more than one colour of ink onto a printing plate using a TARLATAN, BRAYER,brush, DABBER,or a combination of these, and printing the colours simultaneously. S [..]

A complex salt, essentially a hydrate of potassium aluminum sulfate, used along with rosin in the SIZING of paper and as a MORDANT for fixing colours. Also called papermaker’s alum.

A dye of coal tar origin discovered by William Henry Perkin in England in 1856. Aniline dyes are prepared from benzol, which is a product of coal tar. Today the term is used broadly to designate synth [..]

An INTAGLIO technique in which fine particles of acid-resistant material (powdered rosin, spray lacquer, or spray paint) are adhered to a plate to create tonal effects. The plate is first treated in a [..]

A chamber containing a shelf on which printing plates are placed to receive an even ground of rosin particles for aquatint processing. A paddle wheel or air device is used to circulate the rosin parti [..]