What Is Sun Print Paper

Sunprinting, also called cyanotype or “blueprinting,” is the oldest non-silver photographic printing process. The paper is coated with light-sensitive chemicals, which react to light waves and particles when exposed to sunlight.

How do sun prints work?

The sun print paper is coated with a photo-sensitive chemical which reacts in light. The photo-sensitive paper turns pale blue when exposed to light. Water stops the chemical process and fixes the shadows of the objects on the sun print paper.

What are Sun prints called?

Sun prints, also called cyanotypes, rely on a chemical reaction involving light-sensitive paper and the sun to create silhouettes. They result in beautiful prints colored white and cyan-blue.