1.Flashing microtext that, when viewed with the unaided eye, appears to be part of the line design, bet under magnification is seen as a repeated pattern of words, codes or numbers.
1.通过缩文字,来增加防伪特征。闪烁的
缩文字,在没有
大镜的情况下,看到的只是一条线,而在
大镜观看时,可以看到连续重复的文字、编码及数字等。