gum bichromate process


a contact printing method in which the image is formed on a coating of sensitized gum containing a suitable colored pigment and potassium or ammonium dichromate.

Origin of gum bichromate process

First recorded in 1895–1900
Also called gum dichromate process. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019