The printing field in the hottest Internet of thin

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The printing field in the era of IOT will usher in a new dawn

Internet of thirgs (IOT) is the general name of sensing in the world. The concept of IOT was put forward in 1999. It refers to the interconnection of radio frequency identification devices, infrared sensors, global positioning systems, laser scanners and other devices to achieve intelligent identification and management. Specifically, sensors are embedded and equipped in various objects such as electricity, railways, bridges, tunnels, highways, buildings, water supply systems, dams, oil and gas pipelines, and then the IOT is integrated with the existing interconnection to realize the integration of human society and physical systems. How far is IOT from us? What new opportunities will the IOT era bring to the printing field? This paper will make a preliminary discussion on the above problems

the pace of IOT is approaching.

IOT technology, as one of the important basic technologies in the field of electronic information technology, has developed rapidly in the world with the economic globalization and the rapid change of information technology. The sustained and rapid growth of China's economy and the popularization of electronic information technology have created unprecedented market space for the wide application of IOT technology in various fields, industries and regions of the national economy, and promoted the continuous expansion of the industrial scale

now, the independent and innovative smart bar code has been applied in some industries in China. The R & D and solution innovation of RFID technology and biometric technology products, which are widely used in urban transportation, logistics transportation, identity recognition, food safety and supply chain management, provide a strong guarantee for the improvement of national informatization level and information security

barcode printing

in fact, all printing methods can print barcodes, such as offset printing, embossing, gravure printing, flexographic printing, silk printing and inkjet printing. For bar code printing, different printing methods have different control methods. The bar code can be printed by relief printing machine, lithographic printing machine, gravure printing machine and hole printing brush machine. Lithographic (offset, dry offset) and gravure (gravure) printing bar code labels have good stability, high dimensional accuracy and accurate image and text restoration. They can be used to print bar code labels with small magnification factor. High dimensional accuracy can also be obtained by printing bar code labels with hole plates (wires), and it has strong adaptability to the type and shape of printing carriers. It is suitable for printing bar code labels with moderate magnification factor when jaw slipping occurs. The dimensional accuracy of letterpress printed bar code logo is poor in rigidity and repeatability. Generally, it is only used to print bar code logo with large magnification factor

due to the large number of applications of commodity bar codes, the printing quality of commodity bar codes plays an important role in the printing of packaging. The unqualified printing quality of bar codes often results in the loss of product batches. Here is an analysis of the common reasons for the unqualified printing quality of commodity bar codes:

the scaling ratio does not meet the standard requirements. The standard size of bar codes is marked in the national standard GB, It is specified that the scaling ratio of bar code is 80% ~ 200%. The oil delivery valve should be inspected if some bar codes are often found to be unqualified. The scaling ratio is usually too small, that is, less than 80%. Due to the layout, the bar codes on some packages are scaled arbitrarily, resulting in too small bar code size. This error is hidden because the printing accuracy of the printing machine is very high, and many barcodes with a zoom ratio of less than 80% can be scanned out, resulting in the false impression that this kind of barcode is qualified. However, if it fails to be scanned out once or twice, it is classified as poor printing quality. Find the reason in offset printing, but do not know that the barcode is not qualified

the back space is insufficient. The back space of the bar code refers to the space left on the right of the last black bar of the bar code to prevent other color blocks from interfering with the scanning of the bar code. The front space also has such requirements. However, there is a prefix of the bar code (the first digit of the bar code number) on the position of the front space. Generally, the front space is not insufficient. Usually, we only see black bars during design and plate making. When the layout position is not enough, the back space of the bar code is often occupied. It is equally important not to notice the empty bar of the bar code. Insufficient back space will cause the bar code to be scrapped and cannot be swept out

the color combination of the blank bar is wrong. The national standard only lists that the color combination of the blank bar should meet the standard provisions, without specifying which combinations can be used and which cannot be used. It is difficult to understand in practical application. At present, the biggest problem is that as the printing materials become more and more diversified, we have no experience in printing bar codes on some materials, such as gold aluminum poise, silver aluminum poise, various pearlescent papers, etc. to deal with these problems, we can only honestly carry out proofing, and mass production can be carried out only after there is no problem after testing. The wrong color combination of the blank bar will also cause the bar code to be scrapped and cannot be scanned out completely

other frequently encountered nonconformities include incorrect placement, low printing quality, selected paper materials, etc. In bar code printing, the carrier of bar code printing shall be made of materials with small temperature effect, stable size after stress, good coloring degree, moderate ink diffusion, low permeability and good smoothness. Water resistance, such as coated paper, offset paper, white paper, biaxially oriented polypropylene film, aluminum foil film, tinplate, etc

at present, there are hundreds of bar codes in the world. Bar codes are playing a more and more important role in modern commercial circulation, and there are more and more problems in bar code printing. We should realize that bar code printing is different from the printing of other elements on printed matter. It has the constraints and management of national standards. Only in strict accordance with the requirements of national standards can we print qualified bar codes, Avoid unnecessary losses. In short, printing enterprises can select and undertake barcode printing business according to the existing equipment capacity and the above principles

with the change of information society, the IOT industry and two-dimensional bar code printing have developed by leaps and bounds, and a comprehensive basic industry has initially formed. In the future, China's IOT technology industry will develop rapidly in the direction of clustering, scale and internationalization. We have reason to believe that the printing field in the era of IOT will usher in a new dawn

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