Collotype |
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A photomechanical process. The preparation of a plate by coating a metal surface with light-sensitive gelatin. A photographic negative is placed on the surface and the two are exposed to light. The gelatin dries and hardens in proportion to the strength of the light transmitted through the negative. Collotypes are primarily lithographs and are especially good for reproducing watercolors, lithographs, drawings, and photographs. Also called photo gelatin print or heliotype. |
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