Gum bichromate is a multi-layered printing process that originated in the 19th century. During the time of the Pictorialism movement, many photographers favoured the delicate and subtle colour variation of Gum Bichromate Prints.
The technique involved in making gum prints includes mastering several variables, such as the proportion of the pigmented light sensitive mixture, and the process of exposure and development. To prepare the mixture, gum arabic, potassium dichromate solution, and watercolours are commonly used. Once the mixture is prepared, it is applied to the printmaking paper, and the negative is placed over the paper. The image is then created through a series of exposure and development steps, resulting in monochrome, multi-colour, or even full-colour images.
Printmaker Glo Chan employs this classical developing technique to produce print images with delicate colours. In this demonstration, Glo will showcase the process of creating gum bichromate prints, highlighting the exquisite beauty of this technique.
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