For silkscreen printing it is used a screen or sieve, consisting of a silk fabric, synthetic or metal fiber, stretched on a frame that nowadays is metalic and formerly was made of wood. This screen should be prepared through a manual procedure, which may consist on placing trimmed templates on it, applying filler liquid or using photomechanical shutter systems. The purpose of any of these methods is that the mesh becomes clogged in the areas that are not being printed and open in the areas that correspond with the silkscreen image.
Once the screen is prepared, the medium that has to recieve the impression is placed under it, and over it the ink pressed with a squeegee. This operation must be done manually or mechanically as many times as mediums to be printed and as many colors are needed, previously drying each of the preceding colors.
The origin of the silkscreen is attributed to both the Chinese and Egyptians. Their deployment in Europe is recent, firstly introduced in Britain around 1890, and later in France, especially in the Lyon region, where it was exclusively used for textile printing. It was the early twentieth century when the first graphic applications take place, and in the decade of the sixties the pop artists claim its use to represent their vision of popular culture.