| 摘要 |
<p>A photomechanical method for forming pressure sensitive dry transfer reproductions of color images, either single color or multicolor. A base release lacquer (14) is applied to a substrate (12) and dried, a one color ink layer (20) is applied to the dry base layer (14) and dried. A white ink layer (22) is applied to the dried color ink layer (20). The dried white ink layer (22) is powdered (24) and a layer of photoresist composition (26) is formed thereover and dried. The dry photoresist covered layered substrate (12) is exposed to a light source through an image carrying photographic negative film to harden the photoresist at the imaged areas (26A) thereby forming a mask. Nonhardened photoresist areas along with all their underlying layers are removed to the base substrate (12) using stepwise selected solvent development steps. The cycles are repeated with respectively different color inks and different negative films to form a multicolor image. The final image is dried and coated with a pressure sensitive adhesive composition (30). The adhesive coating (30) is dried. Drying is essential between all layering and development steps. A second lacquer layer (16), a non-release lacquer, may be applied to the release lacquer base (14) and dried prior to application of the color ink layer (20).</p> |
