| 摘要 |
PURPOSE: Security paper including a metal detection layer or metallic ink printed layer is provided to prevent the leakage of confidential affairs by being discriminated by metal detection and/or X-ray scanning. CONSTITUTION: Security paper(100) comprises a first sheet(110), a metal detection layer(120) which is formed by depositing or coating a metal material discriminated by metal detection and/or X-ray scanning on the first sheet, and a second sheet(130) which covers the metal detection layer to prevent exposure of the deposited metal detection layer. The metal detection layer has a specific identification pattern.
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