The inventor of the Cyanotype was John Herschel and was invented in 1842. The process uses two chemicals named ammonium iron(III) citrate and potassium ferricyanide. A piece of paper is put in potassium ferricyanide and then an item or items is placed on the paper. Sunlight then hits the paper and is left to sit for awhile. The other chemical is ferric ammonium citrate, and is then added to the paper. Then, after the photo is done being printed onto the paper, it is put into water which turns the paper blue. In modern day this is what we now call a blueprint.
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AuthorMaritza Resendiz, the girl who loves to enjoy time with friends and family. Archives
May 2017
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