Application of the hottest printing technology in

2022-08-12
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The application of printing technology in the identification of publications

with the further promotion of the marketization of the publishing industry and the improvement of the level of judicial administration of publishing management, some direct and simple identification methods that were often used in the identification of illegal publications are being eliminated by the new industry environment, and the identification work is more and more inclined to technical standardization. As far as book identification is concerned, making full use of printing technology and practicing a pair of printing eyes will make the identification work as if it had a sharp weapon

in the identification of illegal publications, sample comparison is the most commonly used identification method. The appraisers obtain the genuine samples from the formal publishing channels, and compare the identity and homology between the identified samples and the official publication samples to see whether the printed contents of the two are the same and whether the printing plate production is homologous. If the identified samples are significantly different from the official publication, they can enter the next identification procedure with suspected illegality. So, what printing technologies should the sample ratio focus on? How to identify non identical when the printing effect is roughly the same? Can the sample be confirmed to be legal when the comparison result is homologous printing? In this identification process, understanding printing technology and being familiar with the development of printing industry play a key role in some identification

first eye: application of printing anti-counterfeiting technology

printing anti-counterfeiting technology generally includes anti-counterfeiting design and anti-counterfeiting printing

anti counterfeiting design is an anti counterfeiting means based on the design process of book content. For example, in order to prevent a frequently sold book from being pirated, a publishing house deliberately designed the letter I into a hollow font in the CIP 3 letters of its copyright page. It is difficult for ordinary people to notice that if pirates do not use photocopying and scanning piracy, they cannot do so. This is similar to engraving and computer pattern design, and it is easy to use. This kind of anti-counterfeiting method is like the publishing unit preparing an anti-counterfeiting identification password for its own books. Combined with other evidence factors, it is easy to identify the authenticity of books

from the perspective of printing technology, anti-counterfeiting means mainly include: special printing, unity of purpose, cooperation is the last word! Tensile testing machine manufacturing enterprises must strive for material anti-counterfeiting, plate making and printing process anti-counterfeiting, laser holographic anti-counterfeiting, FID technology anti-counterfeiting, etc. Many cases have taken a variety of methods to prevent counterfeiting. FID technology anti-counterfeiting is a functional anti-counterfeiting that matches the industrial expansion in the Internet environment. It has been popularized in Europe and the United States, but in China, only a few publishing houses have tried to use some books. With the popularization of this technology, our identification of illegal publications will become easy and fast. At present, the most typical anti-counterfeiting printing technology is the anti-counterfeiting label printed by laser technology

the plate making process of laser anti-counterfeiting labels is complex and difficult, and only a few manufacturers can produce them. It is difficult for those who steal the printing of gb/t 4897 (2) 003 particleboard to copy them at low cost. The laser anti-counterfeiting label uses the principle of holography, and uses the laser light source to capture the amplitude information and phase information of the light wave of the scene at the same time. The subtle air flow can lead to the change of the holographic image. Like a fingerprint, it is impossible to have two identical holograms. The rainbow colored three-dimensional anti-counterfeiting icons are made by film pressing, scalding and other processes. There are not a few books that use laser anti-counterfeiting marks in identification

[case] in the process of investigating a suspected case of wholesale and sale of pirated books, a local public security bureau detained and sealed the suspected illegal publications, and sent three samples to an identification agency for identification. After accepting the entrustment, the appraiser contacted the publishing house marked with the sample to confirm that the society has indeed published a publication of this name and obtained a sample of official publications. The identification samples were compared with the official publications for identity, and the content was basically the same, but there were significant differences between the laser lamination anti-counterfeiting marks on the cover

technically speaking, general photography technology only records light and dark changes, and laser holography can also record the spatial changes of objects, so it is three-dimensional

the cover of the genuine sample is pasted with a circular anti-counterfeiting logo. The logo is a three-dimensional three-dimensional effect pattern marked with the letter BS. Shaking the logo up and down, the visible light column shoots out from the background of the logo, shaking left and right, the light column swings in a fan shape, the background is a blue starry sky, and the stars are distributed in a sense of hierarchy. The round anti-counterfeiting logo pattern of the identification sample has only one circle of bright dots, and there is no three-dimensional effect. The light column without three-dimensional effect or two luminous sectors, and there is no three-dimensional starry sky in the background. The identification results show that the three identification samples are illegal publications

second eye: judgment of different plate making methods

there are usually three ways to steal books:

steal the genuine version 8. The pressure stabilizing spring of the oil delivery valve has low stiffness or the throttle needle cavity has infarction data, which is directly used for plate making and printing. The pirated content of this method is completely consistent with the genuine version. In this case, if there is no evidence of data theft, it is difficult to judge only by the printing results and existing technical means

ocr identification scanning or re entry, it is almost impossible to use this means to print the content of the layout completely consistent with the genuine content, and the cost of using manpower for piracy will be very high. Even so, there will be problems in the processing of fonts, font sizes and non text parts

photographic plate making or scanning plate making, and direct plate making after photographing or scanning the pages of genuine books. The contents of the stolen books in this way are exactly the same as those of genuine books, but due to the loss of pixels due to secondary replication, the printed fonts and image edges appear relatively fuzzy or rough. This phenomenon can be observed with the naked eye at some times; Even if the counterfeiter uses a higher specification scanner and photographic equipment, the appraiser can observe it with a 15x magnifying glass

according to experts in the printing industry, samples that are difficult to distinguish with the naked eye can be copied with a scanner less than 10000 yuan. With the improvement of scanning technology, it is more and more possible to use a high-level scanner to confuse the false with the true. However, due to the cost limitation, this situation has not been found yet

[case] in August, 2011, the case of 18 pirated "history of the Communist Party of China (Volume II)" was sentenced, 14 defendants were sentenced, and several public officials were investigated for criminal misconduct or punished. The case has great social impact and requires rapid and accurate identification. At that time, the authentication entrustment requirements of the case were: to request the authentication of the source of the printed text and image samples and the printing method used. Undoubtedly, the police hope to identify the scope of suspicion by printing means

the characteristics of the appraisal of this case: first, the appraisal object is the printed sample, which has not been bound into a volume, and can only be judged by the content or details of the printing process, but not by the binding characteristics; Second, if the content of the printed page of the sample is completely consistent with that of the official publication, it can only be identified through the plate making and printing processes. In order to improve the authority of authentication, the safeguard measures proposed in the guide include innovating the organization and coordination mechanism, optimizing industry management services, increasing fiscal and tax financial support, promoting the development of military civilian integration, and deepening international exchange and cooperation. The authentication institution immediately invited three domestic printing experts to consult the plate making and printing of the authentication object. The result of the consultation is that the size of the layout center of the identification sample and the layout of the text are consistent with the genuine books, and the text has no dislocation and recognition errors. Therefore, OCR recognition scanning can be excluded

genuine books have smooth text edges, even strokes and ink colors, and beautiful strokes. Compared with the printed sample, the font edge is rough, the strokes are serrated, the thickness of the strokes is uneven, and there are many dirty spots in the heart of the version. The color illustrations of genuine books show that the facial skin color of the characters is fine and fine, with small granularity, and the image level details perform well. Compared with the corresponding image in the color sample, the skin color of the image is rough, the granularity of the clothing image is large, and the level of detail is lost more. It can be judged technically that the identification object is obtained by scanning and copying the printed matter as the original

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