51results about How to "Play anti-counterfeiting effect" patented technology

The invention provides an intelligent electronic anti-counterfeit label system. The intelligent electronic anti-counterfeit label system comprises a goods anti-counterfeit end, a goods anti-counterfeit service end and a client counterfeit searching end, wherein the goods anti-counterfeit end is arranged on the goods; a plurality of different goods end anti-counterfeit information are stored in the goods anti-counterfeit end, and are opened to the public one by one; a plurality of different service end anti-counterfeit information are stored in the goods anti-counterfeit service end, and are opened to the public one by one; the plurality of different goods end anti-counterfeit information stored in the goods anti-counterfeit end are corresponding to the different service end anti-counterfeit information stored in the goods anti-counterfeit service end, and are opened to the public synchronously; the client counterfeit searching end includes a counterfeit searching scanner; the client counterfeit searching end is connected with the goods anti-counterfeit service end through the counterfeit searching scanner, and can acquire the service end anti-counterfeit information; and the client counterfeit searching end can identify true or false of the goods by distinguishing whether the goods end anti-counterfeit information in the goods anti-counterfeit end are consistent to the service end anti-counterfeit information in the goods anti-counterfeit service end, so that the intelligent electronic anti-counterfeit label system is high in practicality.

The invention provides a photosensitive color-changing anti-counterfeit barcode and a preparation method thereof. The preparation method comprises the following steps: stirring the acceptor and furfural for 4 to 5 hours, followed by water washing, suction filtration, extraction, drying, secondary suction filtration, purification and spin Evaporate to obtain the intermediate; dissolve the intermediate in dichloromethane, then add the donor, stir at a constant temperature of 30°C for 2 to 4 hours, and then undergo purification and rotary evaporation in turn to obtain DASAs molecules; combine DASAs molecules and dye molecules Dissolving and mixing and adding polymers to obtain printing ink; printing photosensitive color-changing anti-counterfeiting barcodes through printing ink. The invention also includes the photosensitive color-changing anti-counterfeit barcode prepared by the method. The preparation process of the present invention is simple and easy to control, and the production cost is low. Through the photosensitive discoloration property of the ink, the flashlight of the mobile phone is used as the light source to complete the discoloration of the barcode, and further realize the anti-counterfeiting effect of the barcode graphic, effectively solving the problem that the anti-counterfeiting code in the prior art is easy to imitate The problem.

A method fo r preparing woodcut by computer to simulate manual carving features that a group of vector lines with different widthes is used to map the gray scales of traditional woodcut. Its advantage is high productivity.