cyanotypes

Process Overview
1. Mix two chemicals to create photo
sensitive solution of ‘sensitizer’.
2. Brush, smear, or soak the sensitizer
into cotton-based watercolor paper.
3. Create a negative image on a
transperency with a laser/inkjet printer or copy machine.
4. Place the
negative over the dried, sensitized paper.
5. Expose to UV light.
6. Wash
the image in water to develop.
7. Hang to dry, and enjoy!

 

http://www.instructables.com/id/Cyanotypes—super-easy-photo-prints-at-home./?ALLSTEPS 

 

an cyanotype is a photographic blue print.