Patent ID: 8246157

Claim:
A printing method for applying liquid ink to a pressure-sensitive adhesive layer of a pressure-sensitive adhesive sheet to print an image, where a surface of the pressure-sensitive adhesive layer, to be superposed, includes a plurality of concave sections and a plurality of convex sections and is configured to adhere to another pressure-sensitive adhesive sheet, when superposed to each other, in a peelable manner, and the liquid ink is an active energy line-curable ink that cures by an active energy ray, the printing method comprising the steps of: printing the image by applying the liquid ink to a printing region on the surface of the pressure-sensitive adhesive layer to be superposed; and curing the applied liquid ink, applied to the pressure-sensitive adhesive layer, by irradiation by the active energy ray, such that the liquid ink cures in the concave sections and tops of the convex sections in all areas of the printing region are exposed, wherein the applied liquid ink has a 10%-to-70% reduced thickness when cured.