zerochrome

this is the very first polymer gravure made with a self coated zerochrome-SbQ emulsion.

Adding a clear light sensitive layer before all other layers helps to keep highlights clean in direct pigment colloid printing.

A viable alternative to chromium salts in pigmented colloid printing.
A research paper by Simone Simoncini and Kees Brandenburg about the use of a novel method for pigment colloid printing published on alternativephotography.com