Laser printing of plasmonic colour photos within secure ID documents

这项合作的目标是创造一种安全、难以伪造的高通量技术，以满足行业合作伙伴确定的新兴市场需求，将激光打印的彩色图片整合到图片ID文件中。公文(护照、驾照等)上的彩色图片身份证目前使用基于油墨的打印来生产。这种方法产生的表面图像可以被篡改或伪造。篡改包括机械或化学擦除、重印或分层攻击，而伪造涉及使用替代材料和工艺复制文档。为提高图片ID文档的安全性，图片应放置在材料(通常为聚合物)的主体内。目前商业上使用的一种解决方案是激光雕刻(在这种情况下是燃烧)大量的聚合物材料，以创建黑色区域，而未接触的材料保持白色。这就产生了黑白图片ID。虽然这项技术提高了图片ID的安全性，但现在越来越需要获得彩色图片ID，就像用墨水创建的那样，但在材料内。渥太华大学正在与加拿大钞票(CBN)合作开发一种激光打印解决方案，该解决方案将在图片ID文件中使用的大量聚合物中生成安全、可定制、高分辨率的彩色图片。

The goal of this partnership is to create a secure, difficult to counterfeit high throughput technology that meets emerging market needs identified by the industry partner to integrate laser printed colour pictures into picture ID documents. Colour picture IDs on official documents (passports, driving license, etc.) are currently produced using ink-based printing. This approach produces a surface image that can be altered or counterfeited. Alterations include mechanical or chemical erasure, reprinting, or delamination attacks, while counterfeiting involves reproduction of the document using substitute materials and processes. To improve the safety of picture ID documents, pictures should be located within the bulk of the materials (usually polymers). A solution currently used commercially is to laser-engrave (in this case burn) polymeric materials in the bulk to create dark areas while the untouched material remains white. This results in a black and white picture ID. While this technology improves the security of the picture ID, there is now a growing need to obtain colour picture IDs, like those created with inks, but within the material. The University of Ottawa is partnering with the Canadian Bank Note (CBN) to create a laser printing solution that will result in a secure, customizable, high resolution colour picture within the bulk of polymers used in picture ID documents.