| 摘要 |
PROBLEM TO BE SOLVED: To provide an information hiding type sheet with a large amount of the information to be hidden in which printed information is clear, its confidentiality is excellent, it is easily utilized for a user to print different information on every sheet. SOLUTION: The sheet for hiding the information is constituted so that a folding piece part A, having such a structure that a surface sheet 1 and a back surface sheet 2 both with the same sizes are joined and stuck together on their edge parts, and between the surface and back surface sheets 1 and 2, an interlaminar releasing layer is arranged between pressure-sensitive adhesive layers, is provided, and the pressure-sensitive adhesive layer 3 and the interlaminar releasing layer 4 are transparent or semi-transparent, and in the folding piece part A, the faces opposing to the pressure-sensitive adhesive of the surface and back surface sheets 1 and 2 are releasable to the pressure-sensitive adhesive layers 4 and 4, and on parts B and C except the folding piece part A, the surface and back surface sheets 1 and 2 are un-releasably stuck together. COPYRIGHT: (C)2007,JPO&INPIT
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