What is Screen Printing?

Screen printing is a technique whereby a mesh is used to transfer ink onto a substrate, except in areas that have been sealed off by blocking stencil. A squeegee blade moves across the screen, filling the open mesh apertures with ink. A reverse stroke causes the screen to briefly touch the substrate along the line of contact. The ink wets the substrate and is pulled out of the  apertures as the mesh springs back after the blade has passed.