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Screenprinting techniques

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Screen printing is a printing technique whereby a mesh is used to transfer ink onto a substrate, except in areas made impermeable to the ink by a blocking stencil.

I used screenprinting as a supporting technique in:

Printing technique

There are various terms used for what is essentially the same technique. But they all have the following in common:

  • Use of a frame (generally wood or aluminium) on which a mesh  is mounted under tension. The mesh can be of different types: eg silk, polyester, nylon or metal and of varying degrees of fineness depending on the type of surface to be printed.
  • A stencil is formed on the mesh by blocking off parts of the screen in the negative image of the design to be printed; that is, the open spaces are where the ink will appear on the substrate. The stencil can be made through different techniques: direct stencils made with photoscreen techniques or using masking solutions and indirect stencils used as masks.
  • Mesh/frame preparation: The surface to be printed (commonly referred to as a pallet) is coated with a wide ‘pallet tape’ to protect the ‘pallet’ from any unwanted ink leaking through the screen and potentially staining the ‘pallet’ or transferring unwanted ink onto the next substrate. Next, the screen and frame are lined with a tape. The type of tape used in for this purpose often depends upon the ink that is to be printed onto the substrate. These aggressive tapes are generally used for UV and water-based inks due to the inks’ lower viscosities. The last process in the ‘pre-press’ is blocking out any unwanted ‘pin-holes’ in the emulsion. If these holes are left in the emulsion, the ink will continue through and leave unwanted marks. To block out these holes, materials such as tapes, speciality emulsions and ‘block-out pens’ may be used effectively.
  • A blade or squeegee is moved across the screen to fill or ‘flood’ the open mesh apertures with ink, and a reverse stroke then prints the image as the screen touches 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 colour is printed at a time, so several screens are layered to produce a multicoloured image or design. Hinge clamps keep the screen in place for easy registration

Bibliography

Adam, R. & Robertson, C., (2003) Screenprinting: the complete water-based system, London: Thames & Hudson.

Barker, D., Traditional Techniques in Contemporary Chinese Printmaking, London: A & C Black.

D’arcy Hughes, A. & Vernon-Morris, H., (2008) The Printmaking Bible: the complete guide to materials and techniques, San Francisco: Chronicle Books.

Grabowski, B. & Flick, B., (2009) Printmaking: A Complete Guide to Materials and processes, London: Lawrence King Publishing.

Griffiths, A., (1980) Prints and Printmaking: An introduction to the history and techniques, London: British Museum Press.

Martin, J., (1993) The Encyclopedia of Printmaking Techniques, London: Quarto Publishing.

Pogue, D., (2012) Printmaking Revolution : new advancements in technology, safety and sustainability, New York: watson-guptill publications.

Stobart, J., (2001) Printmaking for Beginners, London: A&C Black.

Stromquist, A., (2004) Simple Screenprinting: basic techniques and creative projects, New York: Lark Books.

Williamson, C., (2011) Reinventing Screenprinting, London: A&C Black.

Woods, L., (2011) The Printmaking Handbook: Simple techniques and step-be-step projects, London: Search Press.

Video Tutorials

Overview

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https://www.youtube.com/watch?v=adMYcD7lScQised’ area of varnish is created. When cured at the end of the process, the varnish yields a Braille effect, hence the term ‘High Build’.

References

Adam, R. and C. Robertson (2003). Screenprinting: the complete water-based system. London, Thames & Hudson.

Grabowski, B. and B. Flick (2009). Printmaking: A Complete Guide to Materials and processes. London, Lawrence King Publishing.

Pogue, D. (2012). Printmaking Revolution : new advancements in technology, safety and sustainability. New York, watson-guptill publications.

Stromquist, A. (2004). Simple Screenprinting: basic techniques and creative projects. New York, Lark Books.

Williamson, C. (2011). Reinventing Screenprinting. London, A&C Black.

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