The two-dimensional code simply means that the way of storing the information of the one-dimensional bar code is expanded in the two-dimensional space, thereby storing more information. Because of its large storage capacity, high confidentiality, strong coding ability, high traceability, strong damage resistance, low cost, etc., it is particularly suitable for forms, security and confidentiality, tracking, licenses, inventory counting, data backup, data Documents (including Chinese character files), images and other application fields have gradually penetrated into people's lives. In recent years, inkjet printing has begun to "strike" into multiple printing subdivisions, including QR codes. What kind of sparks will be ignited when the QR code encounters inkjet printing?
QR code: "Open" the market for multiple applications
With the development of mobile Internet and gradually entering the lives of ordinary people, the application of QR codes in the market is becoming more and more widely. At present, there are mainly the following types.
Welfare lottery. Since the end of 2007, each scratch-off instant welfare lottery ticket has its own unique “identity card number†—a QR code in the security area, which contains ticket information, batch number, and serial number information. In 2008, the QR code technology was fully applied to instant welfare lottery tickets, which greatly improved the safety of China's existing lottery tickets. Up to now, China has sold nearly 60 billion yuan of instant lottery tickets, accounting for about 16% of the total sales of Fucai. There are 74 lottery varieties listed on the market.
Tobacco packaging. In recent years, some companies have also begun to embed two-dimensional code technology in tobacco packaging, that is, add a two-dimensional code in the last link of the "code to bar" process, and generally the two-dimensional code will be written into the industry Factory information, retail customer order information and anti-counterfeiting information. After the cigarettes circulate in the hands of consumers, consumers can query the platform through the QR code of the mobile phone to obtain the information of the cigarette circulation channels and the authenticity identification service. At present, based on different needs, Hongyun Honghe Tobacco (Group) Co., Ltd. and Shandong China Tobacco Industry Co., Ltd. have implemented the application of two-dimensional code technology on cigarettes or packs.
Commercial label. Since its establishment, Hangzhou Yingfei Cultural and Creative Co., Ltd. has established the Chinese audio postcard brand "Lifetime, One Letter", which has been well received by consumers. The way to make postcards "speak" is through different QR codes-the QR code on each postcard is unique and corresponds to a specific address on the postcard company's server, so that pictures, sounds, Delivery of personalized content such as videos.
At present, the QR code has "created" many possibilities in the application market, and it also has good prospects in more fields, such as the food industry, high-end beverage industry and FMCG industry.
High-end beverage industry. At present, the market circulation of high-end beverages has greatly exceeded the actual production volume, and the market is filled with a large number of fake and genuine products. At this time, the simple inspection method is becoming more and more challenging for consumers, and the anti-counterfeiting effect of the two-dimensional code can be seen. The QR code affixed to each product package forms a one-to-one correspondence with the distributor. People can scan and identify the QR code through the computer network and trace it back to the distributor ’s company name, address, and alcohol Relevant content such as production time, factory time, and time to enter the dealer's warehouse.
Food Industry. The traceability management of the product production process in the food industry can avoid the occurrence of fake and inferior food in the market due to profit-driven. With the development of the Internet of Things in China, two-dimensional codes can achieve more standardized and traceable management applications for the food market, and its application in the food industry is gradually becoming possible.
FMCG industry. As the QR code technology matures, more and more FMCG companies will develop new products or service processes based on the technical characteristics of the QR code to provide users with a new customer experience. Large enterprises that take innovation as their corporate culture all have the tradition of organically combining the latest technology with actual work, such as creatively applying QR code technology to actual work, and ultimately play a role in improving corporate operating efficiency, reducing costs, and creating The effect of the new business model. In this regard, Coca-Cola has taken the first step.
Inkjet printing:
Rapid development of QR code
Inkjet printing is a computer direct printing technology, that is, the ink is ejected through the nozzle, and the image is directly formed on the printing material. The characteristics of inkjet printing determine that it can realize the variable data processing function that traditional printing does not have, which can better complete the printing of two-dimensional codes, compared with the electrostatic transfer technology and the direct imaging technology of the printing machine that are the same as computer direct printing. In the two-dimensional code printing, inkjet printing has its unique advantages in the comprehensive embodiment of speed, cost and quality.
Since the unqualified QR code printing quality often results in product batch loss, the printing quality is one of the most concerned topics for QR code printing companies. The author puts forward some suggestions on the matters needing special attention in the process of QR code printing.
1. Pay attention to the distance between the paper and the nozzle: the distance between the paper and the inkjet head is usually about 2mm, but sometimes the flatness of the paper cannot be controlled due to the unstable tension of the roll feed paper or the single paper feed platform Within the appropriate range, it is easy to cause the distance between the paper and the nozzle to change during the printing process, resulting in the phenomenon of virtual barcodes, broken lines or scratches.
2. Parameter adjustment when the material changes: for different printing production tasks, the substrate will also change accordingly. When the material of the substrates produced in the previous and subsequent productions differs greatly, it is necessary to test before mass production or to judge based on experience how to adjust the technical parameters such as print resolution and print head temperature to meet the mass printing tasks.
3. Eliminate the lack of backspace: The backspace of the QR code refers to the space left on the right side of the last black bar of the QR code. Its main function is to prevent other color blocks from interfering with the scanning of the QR code. In design and platemaking, many operators often only pay attention to the black bars, and randomly occupy the backspace of the QR code when the layout position is not enough. I did not notice that the backspace of the QR code is actually equally important. Insufficient backspace will cause The QR code is scrapped.
4. To avoid errors in stripe color combinations: The current national standard only lists the standard requirements for stripe color combinations. There is no specific description of which combinations are available and which are not. In actual production, we can only make proofs for the combinations that are difficult to grasp. Only after testing without problems, we can carry out mass production.
In addition, other frequently encountered problems in the printing of two-dimensional codes include position errors, low print quality, and improper selection of paper materials, which require special attention from the operator.
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