With a successfull learning of pinhole camera.. Day 2 arrived with Cyanotype Printing.
Basically, Cyanotype is a photographic printing process that gives a cyan-blue print. The simple and low-cost process referred to as blueprints. Two chemicals are used in the process:
- Ammonium iron(III) citrate
- Potassium ferricyanide.
The English scientist and astronomer Sir John Herschel discovered this procedure in 1842. Though the process was developed by Herschel, he considered it as mainly a means of reproducing notes and diagrams, as in blueprints. It was Anna Atkins who brought this to photography. She created a limited series of cyanotype books that documented ferns and other plant life from her extensive seaweed collection.Atkins placed specimens directly onto coated paper, allowing the action of light to create a silhouette effect.
So this was the brief of cyanotype, our day started with the demonstration of making one print. Kate started applying the chemical in the dark room on one of the acid free paper – Fabriano. sheleft it to dry.. once that was done she kept an OHP negative one the sheet. Cyano prints are exposed to sunlight for the prints. However, to our unfortunate climate in Gujarat.. that definitely was not possible. But to our rescue we had our UV Table ready. We exposed the image to the same.. n results were pretty nice. Kate had to show a demo hence, the time for the exposure was not important. Finally it was our turn, the class were ready with all sort of matrials for thier experiments.
My personal experience was if its on a sunny day.. the exposure time against the sun is 3 – 4 Min. On a UV table it varies from 30 – 60 Min. Also, Khadi paper or Hand-made paper are a big NO.. It works on Canson paper, card paper, Muslin cloth , stone , Fabriano, Cartridge paper.. I’ve heard from Kate it works on lime Stone too..!!
Had an amazing day with printing Cyanotype, best experience with ancient methods of printing.