Introduction: How are QR code grades defined? How to print high-grade QR codes?
What is a QR code?
A QR code is a pattern formed by specific black and white graph distributed on a two-dimensional plane. Its essence lies in arranging “0” and “1” based on the computer’s internal logical foundation in code compilation and using several geometric shapes corresponding to binary to represent text and numerical information. The information is automatically processed through automatic recognition by image input devices or optical scanning devices.
QR code usage
In the printing and packaging field, QR codes are widely used due to their large information capacity, wide encoding range, high reliability, strong confidentiality and anti-counterfeiting capabilities, small space occupation, fast recognition speed, low cost, easy production, and durability. Variable QR code printing has quickly become popular in society.
In the era of mobile internet, QR codes have gradually penetrated into all aspects of our daily life. The market’s demand for QR codes is also gradually increasing, especially in industries such as food, medical, fast-moving consumer goods, and cosmetics, which have high requirements for the quality and grade of QR code printing.
How to define QR code grades
According to the national standard “Two-dimensional bar code symbol print quality test” (GB/T 23704), the quality level of parameters can be represented in two forms: numerical or alphabetical. The numerical form uses 4 to 0 to represent different quality levels, where 4 represents the highest level, and 0 represents the failed level. The alphabetical form uses A, B, C, D, F to represent different levels, where F represents the failed level.
The specific grade of the QR code is determined by its various parameters, including code reading rate, unused error correction, symbol contrast, Modulation Index, axial inconsistency, and grid inconsistency.
In simple terms, the contrast of the QR code, color uniformity, and the accuracy of the position of each point determine the grade, provided that the content is read accurately. The final grade of the QR code is determined by the lowest value of the individual parameters, so all parameters need to meet the requirements.
The Professionalism of Yeacode Coding
Yeacode has rich experience in variable data QR code printing projects, with strong adhesion and clear and beautiful appearance, ensuring the long-term availability of variable QR code information in the product circulation process. The high-resolution UV printing machine is designed in a modular way, with a compact and beautiful overall structure, small space occupation, and easy maintenance. As the saying goes, “A good horse with a good saddle, a good ship with a good sail.” Good equipment also requires high-quality ink. Yeacode has a complete ink system with more than 40 types of UV and oil-based inks available for different needs.