Built a machine that images tint film without inks, coatings, or applying vinyl. Designs are created by rearranging the carbon-based tinting material applied to films. Corona treater-looking machine I designed from scratch (polymer and CNC background). Patent-pending, can do light (faint) to dark (heavy) imaging in copy or reverse copy. Pics are a test print of a distressed US flag and dark text. Machine was built for a totally different application, was applying tint to a window not long ago and thought...hey...
Logos and images in tint film as first thought but we keep coming up with ideas like headlights, half-tones around edges, faint tinter logos in the corners for brand identity, etc.