印刷防伪技术

基于同轴菲涅耳全息的标识印刷防伪技术

Identification Mark of Encrypted In-Line Fresnel Holography

同时，由于采用了数字防伪技术和印刷防伪技术，其安全性又得到了较大程度的提高。

Meanwhile , due to using of digital technology and printing security anti-counterfeiting technology , safety and security have been very much improved .

基于加密傅里叶变换全息印刷防伪技术研究分析了无透镜傅里叶变换全息光路的离焦现象及其对再现像的影响，给出了一种校正离焦全息图的方法，并从实验上得到了验证。

Study on identification mark of encrypted Fourier holography The unfocused hologram of lensless Fourier holography are also discussed , and a way to revise the reconstruction image of unfocused hologram is presented .

水印油墨是印刷水印防伪技术能否实现的关键。

Watermark ink is the key of printing watermark .

传统的印刷品防伪技术通常采用特殊油墨、激光全息图像、线条纹理等方式，存在成本高、技术复杂等缺点。

The traditional anti-counterfeit-printing technique usually takes special ink , laser holographic image and line texture , but these are high cost and complexity technique .

传统的印刷品防伪技术存在着成本高、技术复杂、应用面窄的缺点，假冒伪劣产品严重侵害了生产者和消费者的利益。

And traditional technologies of the presswork forgery prevention have some shortcomings , such as high cost , complex technics , and small cover , result in the benefits of producers and customers are strictly losing .

作为传递信息的途径之一的印刷品，对防伪技术、版权保护的需求日益增加。

As one approach of information transfer in the modern times , it is more and more urgent for the print product to have an anti-counterfeiting technology to protect the copyright .

基于印刷品的信息隐藏研究与其它印刷品防伪技术相比较，数字水印技术应用于印刷品图文防伪方面成本低、实现简单，是一项对传统印刷品防伪技术的有意义的发展和改进。

Research on Digital Watermark Based on Print Materials Compared to other forgery prevention techniques , the proposed techniques can decrease the cost of production and be completed easily .

课题主要结论可应用到有价证券、商品包装和有效证件等的印刷防伪中，具有重要的社会和经济意义，对印刷防伪技术的创新和发展具有一定的推动作用。

The conclusions can be used to the anti-counterfeit printing of negotiable securities , commodity packaging , valid certificate and so on , and it is of profound social and economic significance , and also has definite pushing effect to the innovation and development of anti-counterfeit printing .