Bar code technology is with the development and application of computer and information technology was born, it is a set of coding, printing, identification, data collection and processing in a new technology.
The use of bar code scanning is a major trend in future market circulation. In order to enable the free and wide circulation of commodities in the world, enterprises, whether they are designing and producing, applying for registration or using commodity bar code, must follow the relevant provisions of commodity bar code management.
Currently the world's commonly used code system has ENA barcode, UPC barcode, two-five barcode, cross two-five barcode, Kudumba barcode, three-nine barcode and 128 barcode, etc., and commodities on the most commonly used is the EAN commodity barcode.
EAN commodity bar code, also known as the Universal Commodity Bar Code, developed by the International Article Numbering Association, common in all parts of the world, is currently the most widely used in the international community of a commodity bar code. It is the most widely used commodity bar code in the world, and is currently used in China. EAN commodity bar code is divided into two types: EAN-13 (standard version) and EAN-8 (shortened version).
EAN-13 universal commodity bar code is generally composed of prefix part, manufacturer code, commodity code and check code. Commodity bar code prefix code is used to identify the country or region of the code, the right to assign the code in the International Article Numbering Association, such as 00-09 on behalf of the United States, Canada, 45-49 on behalf of Japan, 690-692 on behalf of mainland China, 471 on behalf of Taiwan, 489 on behalf of Hong Kong SAR. Manufacturer code is empowered in each country or region of the article code organization, China by the National Article Coding Center to give the manufacturer code. Commodity code is used to identify the code of the commodity, the right to assign the code is exercised by the product manufacturer itself, the manufacturer in accordance with the conditions of the provisions of their own decision on what kind of goods in their own use of which Arabic numerals for the commodity bar code. Commodity bar code with a check digit at the end to verify the correctness of the commodity bar code in the left from the first l-12 digital code.
The code of the commodity bar code follows the principle of uniqueness to ensure that the commodity bar code is not duplicated worldwide, that is, there can only be one code for a commodity item, or a code can only identify a commodity item. Different specifications, different packaging, different varieties, different prices, different colors of goods can only use different commodity code.
The standard size of the commodity bar code is 37.29mm x 26.26mm, magnification is 0.8-2.0. When the printing area allows, should choose 1.0 times the bar code to meet the requirements of reading. The smaller the magnification of the bar code, the higher the printing accuracy requirements, when the printing accuracy can not meet the requirements, easy to cause bar code reading difficulties.
Since the barcode reading is achieved through the barcode of the bar and empty color contrast, in general, as long as the contrast (PCS value) to meet the requirements of the color can be used. Usually light colors are used for the empty color, such as white, orange, yellow, etc., and dark colors are used for the bar color, such as black, dark green, dark brown, etc. The best color combination is black bar, white bar, dark brown bar. The best color combination is black and white. According to the practical experience of barcode detection, red, gold, light yellow should not be used as the color of the bar, transparent, gold can not be used as the color of the empty.
The EAN-8 commodity bar code refers to the commodity bar code that the digital code used for identification is 8 digits, which consists of the commodity item code expressed in 7 digits and the check digit expressed in 1 digit.
The birth of the commodity bar code greatly facilitates the flow of goods, modern society has been inseparable from the commodity bar code. According to statistics, at present, China has 500,000 kinds of products using the internationally recognized commodity bar code. After China's accession to the WTO, enterprises in the international arena will win more space for activities. To be in line with international practice, to adapt to the needs of international trade and economic cooperation, enterprises can not wait for the commodity bar code.