he English scientist and astronomer Sir John Herschel discovered the 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.[
The chlorophyll process is an organic alternative photography process akin to theanthotype process. However, instead of printing on the crushed extract of fruit or plant matter, the prints are bleached by sunlight directly onto the surface of leaves using a positive.