Abstract: There is described a photomechanical method for forming pressure sensitive transfer reproductions of color images, either single color or multicolor, upon a substrate involving the forming of a base coat protective layer on a substrate, applying one color ink layer on the base layer and a white ink overlayer on the one color ink layer. The surface of the white ink overlayer is powdered and a layer of photoresist composition is applied. The photoresist covered layered substrate is exposed to a light source through an image carrying photographic negative film to harden the photoresist at the imaged areas thereby forming a mask. Nonhardened photoresist composition areas along with their underlaying layers are removed using stepwise solvent development steps. The steps are repeated where different ink colors are to be applied to form a multicolored image.

Abstract: There is described a photomechanical method for forming pressure sensitive transfer reproductions of multicolor images upon a substrate involving the forming of a base coat protective layer on a substrate, applying one color ink on the base layer and a white ink overlayer on the color ink layer. The surface of the white ink overlayer is powdered and a layer of photoresist composition is applied. The photoresist covered layered substrate is exposed to a light source through an image carrying photographic negative film to harden the photoresist at the imaged areas forming a mask. Nonhardened photoresist composition areas along with their underlying layers are removed using stepwise solvent development steps. The steps are repeated for different colors with the final multicolor image being thoroughly dried and coated with a pressure sensitive adhesive to form the image transfer sheet. Drying between each step of formation is essential.