| 摘要 |
PROBLEM TO BE SOLVED: To strengthen the prevention of careless coloring generated by the contact with a pointed matter, a hard matter or the like by constituting invisible information formed of a developer ink layer laminated on a dye containing microcapsule layer through a solvent containing microcapsule ink layer. SOLUTION: Visible information 4 is provided on the side of a face same as a side face whereon individual information 3 of a base 2 face is provided. The invisible information 4 is constituted of a developer ink layer (a) provided with transparency. The developer ink layer is laminated on a dye containing microcapsule ink layer (b) formed within a frame encircling the invisible information 4 through a solvent containing microcapsule ink layer (c) coating the dye containing microcapsule ink layer. In the above constitution, microcapsule sections whereon dye containing microcapsules are brought into contact with a developer are eliminated to prevent the generation of scumming. Also the dye containing microcapsule layer (b) is protected by the solvent containing microcapsule ink layer (c) to further strengthen the prevention of careless coloring generated by the contact with a pointed matter, a hard matter or the like. |
