Method of forming a pressure sensitive image transfer sheet and the product thereof

Abstract From the Canadian patent

A photomechanical method for forming pressure sensitive dry transfer reproductions of color images either single color or multicolor. A base release lacquer is applied to a substrate and dried a one, color ink layer is applied to the dry base layer and dried. A white ink layer is applied to the dried color ink layer. The dried white ink layer is powdered and a layer of photoresist composition is formed thereover and dried. The dry 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 areas along with all their underlying layers are …