{i} type of color printing used for the finest facsimile reproductions of works of art
A photomechanical print made directly from a hardened film of gelatin or other colloid; also, the process of making such prints
a photomechanical printing process that uses a glass plate with a gelatin surface that carries the image to be reproduced; can be used with one or more colors
After the dichromate has been washed out, the film is soaked in glycerin and water
According to one method, the film is sensitized with potassium dichromate and exposed to light under a reversed negative
As this treatment causes swelling in those parts of the film which have been acted on by light, a plate results from which impressions can be taken with prepared ink