Analysis of the latest technology of paper and ink anti-counterfeiting
With the continuous emergence of the latest technology, its applications have also penetrated into various fields, and printing anti-counterfeiting technology has also been expanded unprecedentedly, from the original limited single anti-counterfeiting means to the current numerous composite high-tech anti-counterfeiting means, but all anti-counterfeiting techniques Must follow the principles of good effect, economy, practicality and easy identification. Otherwise, the best anti-counterfeiting technology cannot be promoted and applied; the current anti-counterfeiting technologies include paper anti-counterfeiting, ink anti-counterfeiting, pattern anti-counterfeiting, rainbow printing, barcode anti-counterfeiting, The latest smart labels, 3D anti-counterfeiting? Biological anti-counterfeiting, compound anti-counterfeiting, the newly-invented "microcircuit" of Germany and Japan and the "banknote counterprinting technology" completed by Chinese scientists, etc. The following will briefly discuss these anti-counterfeiting. (1) Paper anti-counterfeiting Paper anti-counterfeiting still occupies an important position in anti-counterfeiting technology, mainly in the following categories: Security paper with security thread: It refers to placing a metal or plastic thread in the middle of the paper during the papermaking process. In the early days, special metal thread was used. Now polyester plastic thread, micro letter security thread, fluorescent security thread, etc., as long as the shape is straight, it is worth It is mentioned that the latest 3D security thread technology was used in the new version of US dollar banknotes circulated in 2011, which is the "3D security belt" on the right side of Franklin's head of the US dollar bill; it changes with the tilt angle of the hand, and the bright blue security belt The American Independence Bell pattern and the word 100 will move back and forth, left and right. The anti-counterfeiting belt is embedded in the banknotes, not printed. Watermark paper: Refers to paper with embossed, perspective, and touchable images, among which there are three kinds of watermarks: fixed watermark, semi-fixed watermark and unfixed watermark. Laser security paper: Refers to the combination of laser anti-counterfeiting technology and paper to make anti-counterfeiting paper. For example, by using holographic anti-counterfeiting technology and special equipment, the holographic image is made in a specific position of the banknote to improve the anti-counterfeiting performance Red and blue fiber silk, color dot encryption paper: It refers to mixing colored fibers such as red and blue or colored small pieces (dots) into the pulp during papermaking, or sprinkled on the surface of the paper before the paper is unshaped. It is fluorescent under ultraviolet radiation, which makes the finished paper different from the paper Colored fiber. Chemical encryption paper: It refers to adding in the pulp or sizing on the surface of the paper, adding special compounds to the glue or cloning a certain biological DNA molecule fragment, etc. This chemical encryption paper can develop color or fluorescence when coated with specific chemical reagents Electrostatic recording paper: The paper is coated with a conductive layer and an insulating layer paint, and can receive the voltage discharged from the needle electrode to destroy the insulating layer on the paper surface and form an electrostatic latent image with the conductive layer, so that when the developer is added, it can adhere to the pattern , And then melted and fixed on the paper to produce a clear pattern. Optical reading paper: Refers to the printing paper applied to the optical reader, used to read text, the number is called OCR, and the special mark is called OMR. Because it uses optical absorption or reflection to read, in order to avoid misreading, the paper Smoothness, abrasion resistance, cleanliness, etc. have higher requirements. Refers to the surface of the paper coated with strong magnetic particulate powder, and can use magnetic ink to print paper that can be recognized by the computer. (2) Ink anti-counterfeiting At present, anti-counterfeiting inks can be divided into eight categories according to their anti-counterfeiting functions. â–¶ Daylight stimulates color-changing ink; â–¶ Ultraviolet (infrared) excited fluorescent ink; â–¶ Hot? Wet? Pressure sensitive anti-counterfeiting ink â–¶ Chemical reaction color-changing ink; â–¶ Intelligent machine-readable anti-counterfeiting ink; â–¶ Multifunctional comprehensive anti-counterfeiting ink â–¶ Nano ink â–¶ Other special ink Manicure Set,Manicure Tools Suit,Manicure Pedicure Set,Nail Tools Yangjiang Etina Houseware Co., Ltd. , https://www.etinanailtools.com
Magnetic recording paper (MICR paper):