防伪纸就是彩色纤维必须要在纸的表面,或者说彩色纤维上面不能有较厚的覆盖层,如果为了达到好的印刷效果,必须对底纸进行涂布,而且涂布量还相对较高,这样,底纸上的彩色纤维就不可避免地被全部或者部分覆盖,影响防伪标识的识别。由此可见这种在底纸中加入多种颜色纤维的技术在一定程度上限制了纸张质量的提高,尤其是涂布纸的质量。在此,提供一种不影响印刷效果、防伪性能好、能长期保存的防伪铜版纸。实施案例1:如图1所示,在底纸层内均匀分布有一层荧光纤维层。在底纸的生产过程中,先将纤维原料打浆、配浆、调色,然后将预先分散好的荧光纤维层加 Security paper is the color of the fiber must be in the paper surface, or color fiber can not have a thick cover, if in order to achieve a good printing effect, the bottom paper must be coated, and the coating amount is relatively high, In this way, the colored paper on the end of the paper will inevitably be all or part of the cover, affecting the identification of anti-counterfeit labels. This shows that this technology in the end of the paper to add a variety of color fibers to a certain extent, limited the improvement of paper quality, especially the quality of coated paper. Here, to provide a security does not affect the printing, security performance, long-term preservation of security coated paper. Embodiment 1: As shown in Fig. 1, a layer of fluorescent fiber is evenly distributed in the backing paper layer. In the end of the paper production process, the first fiber beating pulp, with pulp, color, and then pre-dispersed good fluorescent fiber layer plus