Welcome to the Hereford College of Arts Workshop Blog. The workshops, run by specialist Technical Demonstrators, are a successful and integral part of the Art College. On the blog, you'll be able to see examples of work, images of the workshops in action and, from time to time, demonstrations of practical techniques.
Tuesday, 24 April 2012
Tuesday, 3 April 2012
PHOTO-POSITIVE LITHO IN THE SUN
Mark from Fine Art is producing a series of photo-litho prints. Normally we would expose the plate to ultraviolet light on the exposure unit in the Textile Workshop but as it was such a sunny day we decided it would be more fun to expose the plate in the sun. This takes 3 minutes as opposed to 90 seconds on the exposure unit and also gave Mark the chance to catch some rays! Above is a photographic breakdown of the process which starts with the exposure of the plate using a black and white positive transparency in the contact frame. The contact frame is hung in a favourable position facing direct sunlight. Once exposed, the plate is then developed and rinsed. When it is dry, the plate is damped down with fountain solution and rolled-up with litho ink. The plate is then printed using the star-wheel etching press.
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