光谱分析法鉴定出入境证件紫外荧光油墨成分的研究

Study of UV Ink Compositions Identification of Exit-entry Documents by Spectral Analysis

紫外荧光油墨是出入境证件中最为常用的防伪技术之一,不同类型的紫外荧光油墨呈现不同的图文特征。形态学检测方法通常是根据激发光波长的差异以及所呈现的颜色差别进行区分,这种主观上的观察势必会带来一定误差,严重时甚至误判。借助光谱分析技术,通过分析荧光光谱数据,客观揭露紫外荧光油墨的成分。实际案例表明:形态学检测方法具有很强的迷惑性,容易导致误判,而量化比对分析方法是一种鉴定油墨成分的有效方法,具有较强的科学性和规范性。

UV ink is a very common anti-forgery technology in Exit-entry Documents. Different graphics and tex- tures are presented with the use of different kinds of UV inks. Morphological detection method can tell the differences by different colors under different excitation light sources. Subjective observation unavoidably brings error, even mis- judgement. Spectral Analysis is introduced in this paper, to indentify the UV ink compositions with the help of fluo- rescence spectrum. A practical case shows that morphological detection method produces illusion and misjudgement. Quantitative comparison analysis method is an effctive way to identify the ink compositions, with scientificity and normalization.