The distance between the hottest bar code printing

Bar code printing and life distance

I'm afraid you will not be too unfamiliar with bar code printing. Every day, we bring large and small bags of food and daily necessities to the cashier from the supermarket. The cashier takes a guy about the size and shape of a hair dryer and sweeps the packaging bag of items. Only a tick is heard, and the price appears in the computer. It improves the speed and accuracy of manual accounting in the past, and improves the modern business environment from the aspects of efficiency, risk, cost and so on. This is the application of bar code printer in shopping malls and supermarkets

barcode printing goes hand in hand

in today's commerce and trade industry, such as clothing, electrical appliances and other department stores, all goods with time limit or shelf life are related to its relevant records, such as name, model/series, ex factory date, backlog period, etc. Different commodities may be assigned to different warehouses and managed by different personnel. In order to carry out unified and timely sales planning, the barcode printer must be used to mark the commodities, so that they can be easily queried and called in the computer. It can be said that bar code will be the ID card of all commodities in society

not only that, in the past, industrial manufacturing, which attributed the cost focus to the production process, has gradually realized the impact of logistics informatization on the overall cost. According to statistics, China's logistics costs account for about 70% of the difference between the purchase and sale of goods. From the book, we can see that logistics costs account for 40% of the total price of goods. Therefore, it is urgent to reduce costs and speed up the development of logistics informatization from the aspect of logistics. This move means that the collection, classification, transmission, identification, query and other work of information generated in the process of logistics are inseparable from bar code printers

it can be seen that bar code printing technology has been widely used in commerce, production, circulation, public facilities and other major industries, which is beyond doubt. The question is, will barcode printing, like ordinary printers, gradually penetrate into the field of our ordinary consumers with the expansion of demand? Let's first look at its technical principle, and then judge whether it can be applied to our daily life

the origin and related technology of bar code printing

in 1949, American engineer woodland invented bar code printing technology based on the principle that different recognition results are obtained according to the width of different lines, and applied for a patent in 1952

in short, bar code printing technology mainly includes bar code printer, bar code scanner, label word and other components. This technology is a symbol composed of a group of black-and-white parallel lines with different widths according to a specific format and spacing. This symbol can achieve the purpose of dialogue between human and computer. The specific identification process is as follows: when the light beam emitted from the light transmitter of the scanner shines on the bar code, the photoelectric detector responds according to the light intensity reflected from the bar code. When the scanning light spot is scanned on the white paper or in the blank between two black lines, the reflected light intensity and the detector outputs a large current; When scanning into the black line, the reflected light is weak, and the detector outputs small electricity. This clamping device is installed on the base of the experimental machine, and makes different responses according to the width of the black line. With the change of the bar code, it turns into current signals of different sizes, which are amplified and transmitted to the decoder. The signal is translated into data by the decoder for local inspection and display, and sent to the computer for data processing. We know that the computer adopts binary calculation method, so the wide black lines in our bar code are compiled into 1, and the thin black lines are compiled into 0, and then logically converted into numbers or arrays from 0 to 9

based on this principle of reflected light recognition, we can also analyze the advantages and disadvantages of bar code printing technology:

first, the decoder recognizes 0 and 1 according to the strength of reflected photocurrent, so there are high requirements for the color matching of printing ink, whether the coloring density is uniform, and color saturation. In addition, the color deviation of ink is also noteworthy in bar code printing

the second is the requirements of the corresponding bearing. Commitments usually refer to the carrier of barcode, such as packaging bags, membership cards, etc. When reading the bar code, the scanning light source is incident at an angle of 45 degrees, while the reflected light acquisition angle is 15 degrees. When the reflected light exceeds the range of 15 degrees, the reflected light signal cannot be collected, which is equivalent to the black effect. Therefore, in order to meet the characteristics of bar code scanning, the substrate is required to have good light scattering characteristics and cannot have specular reflection. Therefore, the white quality, opacity and gloss of paper have a certain impact on the recognition of bar codes

finally, the printing quality of bar code, such as whether it is clear and flat, directly affects the recognition of it by the compiler

in fact, when bar code printers were just born, they did not grow rapidly due to the limitations of computer technology that was not yet popularized and some other factors (such as the trust of consumers). Instead, the American Railway Industry and General Motors took the lead in introducing this technology. It was not until the mid-1970s that the widespread use of computer equipment and the bold attempts of large shopping malls made bar code printing technology a big turnaround. Up to now, bar code printing technology has appeared in all corners of the industrial and commercial industries, mainly in the United States. ZEB has ushered in great changes in the automotive industry, such as new energy, autonomous driving and car service. RA, cab in Germany, ARGOX in Taiwan and other famous brands. So is it possible for barcode printer, the identifier of commodity identity, to be linked with our ordinary family life

bar code technology is on your doorstep

bar code technology has arrived at your doorstep, which is not alarmist. Chengdu water supply company claimed a few months ago that the stainless steel file number plate hanging on the tap water meter in the urban area of Chengdu will gradually withdraw from the stage of history and will be replaced by the barcode file number plate pasted. The water meter file number plate is an important sign of water meter settlement, and also an important basis for relevant staff to confirm the position of the meter. In terms of production materials, the stainless steel file number plate hung on the straight pipe section in front of the tap water meter in the past is cumbersome and easy to lose, and the production cost is as high as one or two yuan each. Judging from the meat, there will be errors. If you use bar code technology, you can quickly and accurately record numbers and store them in the computer by scanning with a scanner. Not only the relevant staff, but even ourselves can master the use of tap water by clicking the mouse next to the computer

we know that the advantages of bar code technology mainly lie in integration, real-time and collaborative management. Then, with the development of digitalization and the application of bar code technology, computers and Internet can no longer be a single entertainment function for home users. Just like the application of bar code technology to the real-time monitoring and inquiry of water meters, most residential areas will sort out the information of more household electronic devices such as electricity meters, gas meters and digital TVs into computers through bar code technology in the near future, so that property managers and users can easily understand the relevant information and communicate in a timely manner

products create demand. We have every reason to believe that bar code technology will be integrated into the lives of ordinary families like computers and printers