| 摘要 |
PROBLEM TO BE SOLVED: To prevent printed matters from being forged positively immediately before being printed by laminating a thermosensible or pressure sensitive coloring layer on one surface of a base material layer, and also laminating an optical interference reflective layer with a pearl pigment contained therein on the thermosensible or pressure sensitive coloring layer. SOLUTION: Forgery preventive printed matters are formed by laminating an optical interference reflective layer with a pearl pigment contained therein on a thermosensible or pressure sensitive coloring layer laminated on one surface of a base material layer. Concretely, after a thermosensible coloring layer 3 is laminated on a base material layer 2 consisting of paper having white color in its surface, a printed layer 4 is formed with ground patterns of company marks and so forth, thus a forgery preventive printed matters 1 are formed by providing through printing an optical interference reflective layer 5 having a constant width at its both ends. The pearl pigment contained in the optical interference reflective layer 5 is of the type being constituted for giving off pearly glosses by covering cores of granules, in particular, they are suitable to be matters formed by covering the surface of mica powders with a titanium compound. |
