Caffenol

Caffenol is a photographic alternative process whereby phenols, sodium carbonate and optionally Vitamin C are used in aqueous solution as a film and print photographic developer.[1][2]

Other basic (as opposed to acidic) chemicals can be used in place of sodium carbonate, however sodium carbonate is the most common.[1]

There are many formulas for caffenol. All are based on preparations which contain caffeic acid (i.e. coffee or tea) and a pH modifier, most often sodium carbonate.[2][3] The chemistry of caffenol developers is based on the action of the reducing agent caffeic acid (which is chemically unrelated to caffeine).[1]

History

The Technical Photographic Chemistry Class at RIT in 1995 led by Dr. Scott Williams developed a method of developing photographic film using standard household items. The tested mixtures of tea and coffee combined with agents to balance the pH and successfully made printable images for exposed film.[1] At the time they did not call it "Caffenol", but the methods they developed later became commonly called Caffenol.

References

  1. 1 2 3 4 A use for that last cup of coffee: film and paper development
  2. 1 2 Film Photography Project:Coffee Break – Develop Film at Home with Caffenol
  3. ↑ Formulas

External links

This article is issued from Wikipedia - version of the Tuesday, February 02, 2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.