Security paper and method of manufacturing the same
    2.
    发明授权
    Security paper and method of manufacturing the same 失效
    安全纸及其制造方法

    公开(公告)号:US5161829A

    公开(公告)日:1992-11-10

    申请号:US845791

    申请日:1992-03-09

    Abstract: A security paper includes at least two layers of paper each having inner and outer surfaces and predetermined mechanical properties, color and optical density. Authentication indicia is printed on the inner surface of at least one layer. The indicia is formed of a chemically, mechanically and thermally stable medium having a predetermined color, color intensity and optical density. A chemically, mechanically and thermally stable adhesive permanently adheres the inner surfaces of the layers together. The adhesive has a predetermined color and optical density. The color and optical density of the layers, the color, color intensity and optical density of the medium and the color and optical density of the adhesive combine to render the authentication indicia detectable in transmitted light and substantially imperceptible in reflected light.

    Abstract translation: 安全纸包括至少两层纸,每层具有内表面和外表面以及预定的机械性能,颜色和光密度。 认证标记印在至少一层的内表面上。 标记由具有预定颜色,颜色强度和光密度的化学,机械和热稳定的介质形成。 化学,机械和热稳定的粘合剂永久地将层的内表面粘附在一起。 粘合剂具有预定的颜色和光密度。 层的颜色和光密度,介质的颜色,颜色强度和光密度以及粘合剂的颜色和光密度组合在一起,使得认证标记在透射光中可检测到并且在反射光中基本上不可察觉。

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