Wothlytype

Jacob Wothly, inventor of the Wothlytype

The Wothlytype was an alternative photographic printing process, the eponymous 1864 invention of the German Jacob Wothly, in which a mixture of uranium ammonio-nitrate (uranyl nitrate) and silver nitrate in collodion formed a light-sensitive layer.

It was a short-lived positive printing process proposed to remedy the recognised impermanence of albumen paper, and compared to which, it was considerably more light-sensitive.

Wothlytype printing-out-paper was superseded by collodio-chloride papers before the end of the 1860s.

This page is issued from Wikipedia. The text is available under Creative Commons Attribution-Share Alike 4.0 unless otherwise noted. Additional terms may apply for the media files.