Bar code technology has been widely used in Europe, America, Japan and other countries, and has been rapidly popularized around the world, and its application fields are still expanding. Because of the use of bar code, consumers have a sense of security in the quality of goods, and bar code can also play an important role in identifying counterfeit and shoddy products and preventing counterfeiting. Because bar code technology is advanced, applicable, easy to master and quick to get results, it is necessary to give full play to its advantages in information (data) collection. Whether in the process of warehousing, storage, shelving or settlement with customers, we need to face the problem of how to input the information of huge data goods (whether it is whole package packaging or single retail after unpacking) into the computer. If the bar code symbol is printed on the packaging of a single commodity, and the bar code reader is used, we can quickly, accurately and timely grasp the variety (article number), quantity, unit price, manufacturer, production date and other information of the commodity. This not only improves the efficiency, but also attracts more customers, reducing or eliminating the congestion and queuing phenomenon when customers check out and pay after purchase. As the main automatic identification technology in China, bar code technology will be widely used in industrial automation control and various management information systems, and will penetrate into multi-technical fields and high-tech products.
The logistics information system adopts bar code technology, and the information is collected and input by computer. This will greatly improve the practicability of many computer management systems. The application and popularization of bar code originated from the modernization of commodity management, that is, the application of POS system. For example, there are more than 220,000 kinds of goods in American supermarkets. Every year, about 10000 kinds of new goods enter the market, and 10000 kinds of old goods are taken off the shelves, accounting for 50% of the total. Such a heavy workload is hard to cope with without bar code and POS system. Today, Japan is at the forefront of the world in the application of POS system. By the end of 20 15, there were 48,000 manufacturers in Japan, with about 65,438+billion kinds of goods, and quite a few merchants all used POS system. POS system is not limited to grocery stores and some specialty stores (such as medicine, cosmetics, tobacco and alcohol, etc.). ) has also established a POS system. At present, not only the POS system is widely used, but also many countries have established market data exchange centers to communicate the information between production, supply and sales, establish trade data exchange institutions, collect and summarize the sales information of various stores and commodities in time, and feed it back to manufacturers in time. In this way, manufacturers can timely and accurately understand the sales, purchase and price of goods, analyze the psychology of consumers, predict the market and organize the supply of goods in time. Retailers can adjust the sales plan and purchase situation in time according to the situation. Also known as flat-panel scanning gun and desktop scanning gun, most of the scanning guns on the market are flat-panel scanning guns, which is the mainstream now. The optical resolution of this kind of scanning gun is between 300 dpi and 8000 dpi, the number of color bits is from 24 to 48, and the scanning format is generally A4 or A3. The advantage of the flat type is that, just like using a copier, you can put books, newspapers, magazines and photo negatives on it for scanning as long as you open the upper cover of the scanning gun, which is quite convenient and the scanning effect is the best among all common types of scanning guns.
Others include large format scanner, pen scanner, barcode scanner, negative scanner (note that it is not a flat scanner with through scanning, the effect is much better, and the price is of course expensive), and physical scanner (it is not a flat scanner with physical scanning ability, somewhat similar to a digital camera), which is mainly used as a roller scanner in the field of industrial printing and typesetting.
The different types and uses of scanning guns make the price of scanning guns vary widely, and the scanning guns from several hundred yuan to thousands of yuan are also different because of the different appearance and use environment. Choosing the right scanning gun will make the workflow easier and more convenient.