SECURITY PAPER， PRODUCTION METHOD THEREOF AND SECURITY DOCUMENT PRODUCED FROM SAME
收藏国家林业和草原科学数据中心2023-02-12 更新2024-03-07 收录
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资源简介：
The invention relates to security paper， to a security document (7) produced from said paper and to the method for producing same， combining window thread security elements and high-contrast single-tone watermark technology. For this purpose， high-contrast single-tone or electro-type (2) watermarks are inserted into the recesses (6) created in order to cover the thread (1) in the areas in which it is visible， which areas contain more fibres and， as such form dark areas (8) in the end paper. The invention relates to security paper， to a security document produced from said paper and to the method for producing same， combining window thread security elements and high-contrast single-tone watermark technology. For this purpose， high-contrast single-tone or electro-type watermarks are inserted into the recesses created in order to cover the thread in the areas in which it is visible， which areas contain more fibres and， as such， form dark areas in the end paper.
提供机构：
国家林业和草原科学数据中心
创建时间：
2023-02-12
