Screen Printing

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Screen printing uses a mesh to transfer ink onto a substrate, except in areas made impermeable to the ink by a blocking stencil.
A blade/squeegee is moved across the screen to fill the open mesh apertures 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 apertures as the screen springs back after the blade has passed.
One color is printed at a time, so several screens can be used to produce a multi-coloured image or design.