China Banknote Printing and Minting Corporation

Zhongchao Special Security Technology Co., Ltd

Sicpa Holding Sa

China Banknote Sicpa Security Ink Co., Ltd.

Zhongdong Ye

Jing Li

Pierre Degott

Gebhard Ritter

Chunhua Hu

Fangyi Sun

Weiru Wang

Jun Zhu

Xinyi Li

Baoli Zhang

Raynald Demange

Yuanqi Wu

Disclosed are an optical anti-counterfeiting element and an optical anti-counterfeiting product utilizing the same, the optical anti-counterfeiting element comprising: a substrate () having a first surface () and a second surface () that are opposed to each other, a sampling and synthesizing layer () on a first surface () of the substrate (); and a micro-image layer () on a second surface () of the substrate (), the micro-image layer () including a first region at least partially covered with a coating () and a second region comprising at least two sub-regions each at least partially covered with a color function layer (), the color function layers () in respective sub-regions and the coating () in the first region have different color characteristics, respectively, and the micro-image layer () can be sampled and synthesized by the sampling and synthesizing layer () to form an image. Such optical anti-counterfeiting element and optical anti-counterfeiting product are easy to identify and difficult to counterfeit.

Optical anti-counterfeiting element and optical anti-counterfeiting product utilizing the same

In the field of protection of value documents and value commercial goods, the present disclosure relates to the field of security threads or stripes to be incorporated into or onto security documents, and security documents having security threads or stripes. The security threads or stripes include i) first optically variable layer imparting a first different color impression at different viewing angles, ii) second optically variable layer imparting a second different color impression at different viewing angles, iii) first color constant layer having a color matching color impression of the first or second optically variable layer at a first viewing angle, iv) second color constant layer having a color matching color impression of the first or second optically variable layer at a second viewing angle, and v) a substrate. The layers are jointly visible from one side of the security thread or stripe.

Optically variable security threads and stripes

Security threads or stripes include a substrate and i) a first optically variable layer imparting a first different color impression at different viewing angles, ii) a second optically variable layer imparting a second different color impression at different viewing angles, iii) a first color constant layer having a color matching the color impression of the first or second optically variable layer at a first viewing angle, iv) a second color constant layer having a color matching the color impression of the first or second optically variable layer at a second viewing angle, and v) one or more material-free regions, wherein the first optically variable layer, the second optically variable layer, the first color constant layer, the second color constant layer and the one or more material-free regions are jointly visible from one side of the security thread or stripe.

Growing community of inventors

Beijing, China

Zhongdong Ye