What is screen printing?

Screen printing is a printing technique where a mesh is used to transfer ink onto a substrate, except in areas blocked by a stencil. A blade or squeegee is moved across the screen to fill the mesh openings with ink, and a reverse stroke then causes the screen to touch the substrate momentarily along a line of contact. This causes the ink to wet the substrate and be pulled out of the mesh openings as the screen springs back after the blade has passed. It is used for printing on a variety of materials such as textiles, ceramics, wood, paper, glass, metal, and plastics.