Anthotype

The Anthotypie (from Greek άνθος anthos " flower" and τύπος typos " impression", also known as Nature Printing ) is an precious photographic printing method that is based on the color change of plant dyes on exposure to light (UV light ).

This process was discovered in 1816 by well- Henri August Vogel in Paris. Even Sir John Herschel looked in the 19th century with the Anthotypie and published his results.

Alcoholic extracts of suitable plant varieties that contain anthocyanins as poppies, chrysanthemums, dahlias, marigolds, among others be applied to thicker, not too strong sucking paper. Under a negative or object is then a long time (some weeks ) exposed. The light-exposed Pflanzenfarbstioffe fade it, while the light-protected areas retain their color. The images created (or photograms ) can - because no fixation is possible - be kept protected from light.

Due to the long exposure times was no industrial, commercial use.