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gum bichromate process


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Robert Demachy (1859—1936)

 

'gum bichromate process' can also refer to...

 

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Under strong light, soluble dichromates react with gum acacia (or ‘arabic’), rendering it insoluble in water. By incorporating artists' pigments in the colloidal layer, a ‘painterly’ contact‐printing process results. Invented ...

Subjects: Photography and Photographs.


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