With a laser to produce self-adhesive label printing laser anti-counterfeit security label is a kind of click to enter the Chinese version

   Laser anti-counterfeiting technology is a laser hologram anti-counterfeit labels make a copy, a common encrypted holographic anti-counterfeit laser holographic lithography and laser anti-counterfeit identification technology, technology can be divided into three areas: First, is thefirst generation of laser anti-counterfeiting technology embossed hologram image with a laser to produce anti-counterfeit labels. Holographic photo card Dunlop by security engineers in the application of labeling Co. shooting crystal X-ray photographs of atomic structure was found, and with Gabor (D · Gaber) set a holographic camera with the theory, application of two-beam interference theory, so light and other things relatedwiththeobject light beam (reference beam) interference pattern to the occurrence of phase "merger" up, and then use photographic film can also record the phase and amplitude, we can obtain the holographic image. What, then, holographic interference method is based on principles of camera shot, have to use high-density (resolution) photographic film records. Monochromatic light less popular because of good correlation is poor, so the development of holographic technology is not fast, it is difficult to shoot a perfect holographic image. Until 1960, after the advent of laser technology,because the laser high brightness, high color and high degree of correlation properties, and soon to promote the development of holographic skills, a wide range of hologram is produced, holographic theory has made good effect, recognized by everyone, but because the time of filming and reproduction of high demand from the discovery that when the laser holography has been limited to the security lab. 70 years late, it wasdiscoveredthatcontains three-dimensional holographic images with the appearance of the structure of information (called interlocking interference fringes), thisstructure can be transferred to the high density of photographic film, etc. up. In 1980, U.S. scientists appliedamoldedstampingholographicanticounterfeiting technology will transfer to the holographic appearance of the structure or PET polyester film adhesive, andthenprintouttheworld'sfirstsuccessfully molded a holographic image, the holographic picture, also known as rainbow holograms, it is the result of laser plate-making, the image made on plastic film, place colorful diffraction effects, and make pictures with a two-dimensional, three-dimensional sense of space, in normal light, hidden image, the information will be re- are. When the light shines from a particular point of time, will show a new image. This embossedhologram image can be printed as large as quick copy, low cost, and can be connected with the use of various types of printedmatter.Thus,theuseofholography to the community have taken a decisive step. Because then the embossed hologram images manufacturing skills often advances the length oftheskills, just a small amount of people to grasp, so he is used as anti-counterfeit labels. The security token is: 1. Holographic picture was taken in the whole process, if there is a prerequisite for the differences (such as shooting the premise of the rainbow hologram), the results of holographic logo will make a difference. (2) of this hologram holographic information can not be taken with a normal camera, so the hologram is difficult to be copied. The first use of holograms as a security ID is Johnny Walke Whishy (one kind of whiskey). It is used in a foreign country, I heard that the amount of added fat to sell about 45%. Laser holographic anti-counterfeiting skills molded into China in late 1980 early 1990, a special label is 1990 to 1994 period, the introduction of production lines throughout the country 100, accounting for when manufacturers produced more than half of the world. Early in the introduction, this skill does play a necessary anti-counterfeiting security effectiveness, but as time goes on, the laser holographic images manufacturing skills quickly spread, and now has already been defeated in all aspects fromcounterfeiters,almostcompletely subvert the anti-counterfeiting technology. Laser anti-counterfeit identification at the time when it has the following birth defects: 1. Just relying on the manufacturing skills to protect the confidentiality and security control. 2 is a brief look at class security skills, the look is to see whether the point is the first holographic image, followed by release to see patterns can fit the pattern, but as long as careful of popular when consumers can distinguish between two kinds of differences between versions holographic logo. 3 did not identify themselves to avoid being re-application security skills approach. 4 did not prevent anti-counterfeit labels attached to the packaging to be reapplicationoftechnology options. 5 does not prevent application of the acquisition of counterfeiters, bribery and other means to achieve anti-counterfeit identification technology. Second, the improved laser hologram anti-counterfeit labels because the first generation of laser holographic anti-counterfeit labels have been completely in vain security function, people have started to improve this laser anti-counterfeit technology. There are three mainmethods of improvement: the first is the use of computer technology to improve the complexity of the holographic image, the second istodevelopatransparent image of laser holographic anti-counterfeit labels, the third is the reflection of laser holographic anti-counterfeit labels. 2.1 Use accounting machine image handling skills improved image handling skills improved accounting machine laser holographic images carried out by two stages, the first stage is composed of holographic machine accounting skills, this skill is a popular two-dimensional images by optical imaging After the holographic image of truth in accordance with a series of disposal, and record information recorded in a hologram on the holographic image pixels constitute accounting machine, look at this pixel holographic images, you can see the differences in the differences ofperspectivethreedimensional images, the have colorful graphics and dynamic effects of changing abnormal sensitivity, but not limited to reproduce the light bias. The second stage is the direct exposure of the accounting machine control skills, and the differences between popular holographic imaging, demand for such skills is not the subject, the amount of graphics generated entirely by accounting machines, accounting machines through the beam control related to two pixels as a unit-by-point to generate the full pattern , the points of disagreement can change the angle between the two-beam, and then made a remarkable three-dimensional hologram results. 2.2 brightly lit laser hologram anti-counterfeit laser holographic images of popular skill is molded by aluminum polyester film (PET film can be used again by the molded aluminum) made of aluminum effect is to add the intensity of the reflected light reproduction of the image even more bright, light and lighting tend to look at this side are those who look like Xu Rong rainbow laser hologram is unreasonable molded out. Brightly lit laser holographic image improvement of practice is to set aside at the aluminum layer, holographic images in brightly lit directly molded polyester film. In 1996, China's Ministry of Public Security and the resolution will be brightly lit laser-wing molded rainbow hologram using the identity card, the card is brightly lit cover and seal the entire film, when the light when you look at the positive, not only can see the documents, but also can see the brightly lit film reproduction out of the 2D and 3D rainbow holograms (the Great Wall and China's English letters). 2.3 Reflection of laser holographic anti-counterfeiting skills in reflection hologram is incident laser shines brightly on the holographic medium latex, a local light as reference light, illuminated objects through the medium of another local, then the object as the object light scattering back to media , object and reference light interfere with each other, internally generated multi-media intervention in the striped surface, the film medium in the medium, after disposal, generated within the multi-half brightly reflective surface (such as 6-micron thick layer of latex can have more than 20 reflections surface). Hologram reproduction process, it is illuminated with white light point source hologram, generated within the multi-media half brightly reflective surface to reflect light back, facing the reflected light, you can see the original of the virtual image, so called reflection hologram Fig. Laser anti-counterfeiting skills to talk about the skills of these improvements does not and can not be extended laser hologram anti-counterfeiting skills, life cycle, due to differences in levels of these improvements is to add the images difficult to manufacture, can be improved without loss of even a laser hologram anti-counterfeiting congenital lack of the original problem still exists. Third, the encrypted holographic anti-counterfeiting hologram of skills is the use of encryption, such as random phase encoding image encryption, image encryption code Moore, laser speckle image encryption encryption coding skills such optical image, the image of security encryption, access fails to see or led to some of the encrypted image speckle. A random phase encoding encryption in the image is hidden, as long as the use of special optical decoding machine had talent enough to show the image, inappropriate general merchandise, and the primary card for all types of security. Moore encrypted, the encrypted image and laser speckle grating or decoder and decoding as long as the speckle superposition, talent enough to show the original image can be used for general merchandise security. Encrypted image is encrypted security token see the image is not a light or a noise, and difficult to decipher without the key, it has a natural anti-counterfeit function. In fact, talking about skills, these skills are the skills of an image encryption for security is a real reluctance. Beginning of the random phase encoding encryption of images, of course, needs special equipment talent show, What, then with high skills in the fraud, international today, with what difficulty? What is difficult to decipher? As Moore encrypted, the encrypted image and the laser speckle more easily copied, because the goods purchased by consumers with not only with access to encrypted images containing anti-counterfeit labels, but also effectively verify the authenticity of the decoder in decoding speckle grating or as many years, the image encryption in the basic security did not play any effect on this anti-counterfeit labels completely relying on the security of the encrypted image to grasp the difficulty of manufacturing skills, and finally grasp the skills are not the work of four laser holographic lithography laser holographic anti-counterfeiting skills, security skills, also known as laser lithography coding skills, also known as laser \ "burn the word \" skills. Because the laser encoder expensive, the use of insufficient general, only the amount produced in large amounts, or less than other printing methods not be able to place complete application. Precisely because of this predicament, it was carried forward in anti-counterfeiting packaging effect. Laser coding skills is a good seal container security skills. The end product to be filled in and stamped seal, the container cover and seams in laser printing, the shape of local printed on the upper cover, printed in the second half of the local container. This effect is that the skills of the security: (1) less than her inability to reuse the container. Cover the container to match the new and the oldhandwritingisdifficult to align. (2) lasers are expensive, and in the production line code printing. Ordinary counterfeiters invested heavily in the purchase of this equipment is difficult (3) manufacturers are free to change printing templates, differences with differences in the date template, change the details of only a small amount of people know, outsiders more difficult to crack. The results from the security perspective, laser coding skills and even better than the holographic image skills. Laser holographic logo is printed by the printing, the use of her inability to identify the manufacturers to ensure that the master is not less than from the printed part of the outflow or unlawful copying. On counterfeiters, the laser holographic marks can be directly purchased in batches, without investment in equipment, nor do they need to grasp the skills. The use of laser coding skills security, those who encountered the first problem is the expensive equipment investment. Laser coding machine prices are, and must apply online, plus change the template shape variants of hidden, so that small and medium sized factories that lax difficult counterfeiting. Because of these reason, the packaging of laser coding skills, life must be good with a laser holographic marks the life of the packaging. Anti-counterfeit laser holographic lithography skills, of course, talking about the results of security over some of the anti-counterfeit labels, but the following shortcomings: 1, because the laser encoder expensive, difficult for SMEs to use. (2) relying on high investment barriers to avoid fraud, once counterfeiters have this equipment, the effect of its anti-counterfeiting skills to talk about the total effect immediately out: laser holographic anti-counterfeiting skills in recent years in countries all over the table was a modern deposit dependents the effect of laser use skills, it is with deep sense of holographic imaging and color flash colorful result was a favorite with consumers like. Laser holographic anti-counterfeit labels can be widely used in light industry, medicine, food, cosmetics, electronics industry, famous trademark,securities,confidential card and luxury handicrafts, compared with ordinary printing mark it with the charm of the common strengths and . However, domestic manufacturers produced very large and very disorder treatment, greatly affect the degree of promise in the eyes of the masses. The skills appropriate links with other anti-counterfeiting skills to use, comprehensive security, such as holographic, laser hybrid codes, laser ink composite, composite packaging laser plate-making and so on.

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