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Decryption Of Two-dimensional Code: A New Experience Of Laser Marking


Apr 11.2018
The two-dimensional code is a portable data file with high density and high information content. It is an ideal means to realize the automatic storage and use of large capacity and high reliability information, such as certificates and cards, and can be read automatically by machines. In the 12th Five-Year plan of our Internet of things, we use the two-dimensional code, the electronic tag and the intelligent industrial data terminal as the three major sensing technologies of the Internet of things. Among them, the two-dimensional code, with outstanding technical advantages and high cost performance cost, ranks the three largest technology of perception.

Because of its unique advantages, two-dimensional code has been popularized in many applications.

* the two-dimensional code is more than ten times the information capacity of the ordinary bar code, and it can contain 1848 alphabetic characters or 2729 digit characters, and about 500 Chinese character information. And more complex data can be recorded. All digitalized information such as photos, fingerprints, palmprint, signature, voice and text can be encoded by two-dimensional code.

• if the area of the two-dimensional code is not more than 50%, the information lost by the bar code due to contamination and breakage can be used to decode the missing information as usual. The decoding error rate of the ordinary bar code is about two parts per million, while the bit error rate of the two-dimensional bar code is not more than ten million parts, and the decoding reliability is very high.

The two-dimensional code bar code has multiple anti-counterfeit characteristics, it can use the password anti-counterfeit, software encryption and the use of the information including the fingerprint, photo and other anti-counterfeit, so it has a very strong security and anti-counterfeiting performance.


At present, the application of two-dimensional code in the manufacturing information management system, food medicine and other industries, such as traceability and sales management, electronic commerce and other industries, has been very mature, and the demand for two-dimensional code marking is also increasingly vigorous. But the existing inkjet, thermal / thermal transfer and other traditional inkjet coding methods have been more and more difficult to meet the application scenarios and functional requirements of two-dimensional code. The advent of laser marking machine brings better experience and more possibilities to the application of two-dimensional code.

Gem laser marking two-dimensional code sample

Laser marking is a non-contact processing. In the process of processing, it will not cause other damage to the workpiece, and there is no ink and other consumables. It will not produce any waste gas or waste water and avoid pollution.

The line width of laser processing can reach 0.05mm, which can print more precise and clearer two-dimensional code or bar code. The mark is clear, persistent and beautiful, and it can be effective in anti-counterfeiting. It breaks through the traditional two-dimensional code marking method and opens wide application space for precision processing and anti-counterfeiting.

Two dimensional code can carry a lot of information, which is the basic of product information traceability, but this means that each product can own its own unique two-dimensional code. The traditional two-dimensional code marking machine is of low automation and low efficiency. Laser marking online can achieve one object and one yard quickly.

It can be seen that, compared with the traditional two-dimensional code marking machine, laser marking machine has stronger market competitiveness, and has wide market demand and application prospect.
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