How to print a QR code with an ad printer?
How do I print a QR code with an ad printer? Now customers who do advertising printing processing will add a QR code of their own company to the advertisement to achieve better promotion effect. However, we all know that the two-dimensional code records data symbol information in a black and white pattern with a certain geometric figure distributed on a plane (in a two-dimensional direction) according to a certain rule. If the printing quality is not qualified, it will often cause product batch Loss, so printing quality is one of the most concerned topics for QR code printing companies.
So, what should be paid special attention to in the process of printing QR codes by advertising printers? I will tell you by Carle below.
1, pay attention to the distance between the printing material and the print head
The distance between the material and the print head is usually about 2mm, but sometimes because of the arc of the printed material, the distance between the printed matter and the print head may change during the printing process, which may cause the bar code to be falsified, broken or scratched.
The above picture is the two-dimensional code printing diagram of the advertising printer manufacturer
2. Parameter adjustment when material changes
For different printing production tasks, the substrate will also change accordingly. When there is a large difference in the material of the substrate produced in the last two productions, the metal label printer should be tested before mass production or judged based on experience to adjust the technical parameters such as print resolution and print head temperature to meet large-scale printing tasks.
3. Eliminate insufficient space
The backspace of the QR code refers to the space left to the right of the last black bar of the QR code. Its main function is to prevent other color blocks from interfering with the scanning of the QR code. When designing and making a plate, many operators usually only pay attention to the black bars. When the layout position is not enough, they arbitrarily occupy the back space of the QR code. It is also important to not notice that the back space of the QR code is actually important. The QR code is scrapped.
4. Avoid wrong color combination
The current national standard only lists the standard requirements for empty color combinations. It does not specifically say which combinations are available and which are not. In actual production, we can only honestly proof the combinations that are difficult to grasp. After testing, there is no problem before mass production.
In addition, other problems often encountered in the printing of QR codes include position errors, low printing quality, and improper selection of mobile phone case materials, which require special attention from operators.