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Copper Plate Photogravure by Marlene MacCallum, David Morrish

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11

Directions for the Home Manufacture of Carbon Tissue for Photogravure Printing

by Sandy King

The home manufacture of gelatin carbon tissue is not extraordinarily difficult, and with a little practice a very satisfactory gelatin tissue can be created. This chapter gives detailed instructions for the preparation of gelatin carbon tissue, which can be used to make photogravures.

First, a note about gelatins. Gelatin is extracted from many sources, including the hide, skin, white connective tissue, and bones of animals. It is useful in carbon photography and in gravure work because it absorbs water and swells with increased temperatures until it reaches a melting point, at which point it forms a colloid; when again cooled, this colloid ...

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