一、常用防伪技术(一)反光膜彩色印刷在反光膜出厂前预印彩色图案或标志,便于对号牌生产进行源头管理,也能加强对反光膜质量的监管。彩色印刷在反光膜生产过程中完成,很难伪造,且能保证彩印图案的质量,在号牌的有效使用期限内不易发生褪色和变形等。在号牌的制作中,号牌牌面的共同信息都可以在反光膜生产过程中完成,如号牌的边框、彩色图案和固定的字符等。目前,美国部 First, the common anti-counterfeiting technology (A) reflective film color printing Pre-printed in the reflective film factory pre-printed color pattern or logo, easy source management license plate production, but also to strengthen the quality supervision of the reflective film. Color printing in the reflective film production process is completed, it is difficult to forge, and can guarantee the quality of color printing patterns, plates in the effective use of the period is not prone to fade and deformation. In the license plate making, the common information on the license plates can be completed in the production process of the reflective film, such as the plate number border, color patterns and fixed characters. At present, the U.S. Department