To anyone who knows my ongoing love affair with 1,3,7-trimethylxanthene, you may as well skip over this entry. Those cunning Costa-Ricans (specifically Saul Bolaños) have discovered a silver negative process that utilises coffee in the development process.
The obvious hook is that you have to use their proprietary “photo transfer paper”, which sounds an awful lot like a commercial process dressed in ratty hipster jeans. At least they are kind enough to inform us that it is a “silver-based” process and tell us that the magical compound in the coffee is “CAFFEIC ACID, ( 3,4-Dihydrocinnamic Acid )”.
Also on this page, is a section on making your own silver (chloride) – gelatine emulsion (again using proprietary components), and a method for coating 35-mm glass plates for use in consumer film cameras.
I Just Wish The Web Developer Would Stop Capitalising Every Damn Thing!