Screen printing is a printing technique that uses a woven mesh to support an ink-blocking stencil. The attached stencil forms open areas of mesh that transfer ink or other printable materials which can be pressed through the mesh as a sharp-edged image onto a substrate. A fill blade or squeegee is moved across the screen stencil, forcing or pumping ink into the mesh openings for transfer by capillary action during the squeegee stroke.
Screen printing is also a stencil method of print making in which a design is imposed on a screen of polyester or other fine mesh, with blank areas coated with an impermeable substance, and ink is forced into the mesh openings of the mesh by the fill blade or squeegee and onto the printing surface during the squeegee stroke. It is also known as silkscreen, serigraphy, and serigraph printing.
Serigraphy is used to create silk screen prints or stencil prints. It works on the principle that the area to be printed is produced as a stencil. The stencil is then attached to a stretched fine mesh screen and the ink is compressed against the screen forcing it through the stencil and onto the paper, thus creating the print. (from Art is 2: making, creating and appreciating, Sandra Jane).