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Due to it's unique stencil process, "serigraphy" (also known as silk screening or screen printing) has the deepest roots of any printmaking technique.
A serigraph is created this way: A screen of silk, nylon or polyester is stretched tightly across a frame. A design is made in stencil form on the mesh by blocking out parts of the mesh. The remaining open areas allow the ink to be squeegeed through to the paper below, resulting in the final printed image.
Serigraphs are works of the artist conceived as serigraphs and had printed either by himself or a master printer under the artist's supervision. Although many prints may be made from each set of screens , each is printed individually. Therefore, serigraphs, like other graphics media, are termed "multiple originals".
Many serigraphs today are produced from an original work in another medium. These are printed in much the same way, but use camera-produced screens. These serigraphs, usually published and offered for sale by a publisher, may be done with or without the artist's involvement in the printing process.