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Silk-screen
DATE[ 2007-12-2 ]    HIT [ 8809 ]
    

The positive films are laid directly on top of the mesh.  Ultraviolet light is shone onto the assembly.  Where there is an image on the positive film, no light gets through to the emulsion on the screening assembly beneath, leaving it unexposed.  Where the film is clear, the light passes through and hits the emulsion, causing it to harden.  When the development process is complete, the unexposed, soft areas of emulsion are washed away, leaving only the porous fabric mesh.
 
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