Relief halftone

Description

A reproductive process primarily used for photographs from the 1880s to the 1950s. A relief halftone block is prepared by printing a screened negative face down on a copperplate coated with fish glue. The unexposed areas remain soluble after development and are washed away, then the plate is acid etched.

Synonyms and Related Terms

color relief halftone; block process

Additional Images

• 
• 

  Relief halftone

Sources Checked for Data in Record

• Luis Nadeau, Encyclopedia of Printing, Photographic, and Photomechanical Processes, Atelier, New Brunswick, 1997

• B. Gascoigne, How to Identify Prints, Thames & Hudson, London, 2004