Copy paper

Emulsion recipe for the production of celloidin paper and plates (around 1920)

Photo on copy paper, around 1880

Copy paper was mainly used in historical photography from 1848 to 1907. The paper is blackened during exposure in the copier frame and then no longer needs development ; However, it is not an exclusive drying process because, like any other photo paper , the emulsion layer must be fixed and watered .

A distinction is made between different types of paper according to the emulsion layer: In albumin paper , the emulsion layer consists of protein .
In the case of Aristo paper, the emulsion layer consists of gelatin .
The celloidin paper is a copy paper with a silver chloride-containing collodion layer on barytaised paper.

Aristopapier was still produced by Kentmere (Centennial Printing-Out Paper) until 2007 , after its takeover by Ilford , production was discontinued.

Individual evidence

^ Announcement on the Chicago Albumen Works website of January 8, 2009 ( Memento of May 16, 2008 in the Internet Archive ), accessed on January 20, 2009.

Web links

Information on the Chicago Albumen Works website ( Memento of May 16, 2008 in the Internet Archive )
Ernst von Angerer and Georg Joos : Scientific Photography: An Introduction to Theory and Practice , VI. Chapter, p. 170

[1] Announcement on the Chicago Albumen Works website of January 8, 2009 ( Memento of May 16, 2008 in the Internet Archive ), accessed on January 20, 2009.