Carbon transfer is a contact printing process invented in the mid-19thcentury. Paper or a synthetic support is first coated with a layer of carbon or other pigment suspended in gelatin, and when dry this becomes known as the carbon tissue. To make a print the carbon tissue is sensitized with dichromate and then exposed under a negative to a light source right in UV radiation, hardening the gelatin in proportion to negative densities. The carbon tissue is then transferred to a final support, and then developed in warm water…
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