Why PCB QR code uses laser marking machine

深圳超越激光

Why PCB QR code uses laser marking machine [Copy link]

QR codes appear in every corner of our lives. QR codes can store a lot of information. As a new means of publicity and promotion, they are now being used by more and more merchants and manufacturers. PCB, an important component of electronic products, is also using QR codes for traceability management and publicity applications. So why is the laser marking machine generally used for QR code marking of PCB? Compared with the traditional marking method (inkjet machine), the laser marking machine's
coding is clearer
because of its higher resolution. The path marking process is more regular. Compared with the dot matrix font, it looks better at first glance and has a certain improvement in grade. At the same time, after reacting with the material of the PCB surface, the laser marking will have a better color contrast, allowing people to see the date, QR code, batch number and other contents at a glance.

Laser marking machine has better adhesion.
Compared with traditional ink jet printers, ink often has adhesion defects and cannot form a strong adhesion on the surface of the product. It is easy to wipe off. Adhesion is also a concern for many manufacturers. Laser marking machine is different. It can penetrate some oil and water and directly form laser-marked characters and QR codes on the surface of PCB. Only when the PCB itself is broken will the QR code fall off.
Lower use cost of laser marking machine
Traditional processing methods need to use ink and solvents at any time. During use, certain maintenance and cleaning agents are required. On the one hand, there is the impact of the environment. Ink solvents are flammable and explosive liquids with irritating odors, which are harmful to the human body. On the other hand, there is the cost of use. Laser marking machine does not require any consumables and can almost achieve "zero maintenance". It can be used by plugging in. Similar to new energy vehicles, lower use cost is also one of its major features.

Laser marking machines have a lower failure rate.
Inkjet printers not only need to be maintained, but also face the risk of downtime or failure during use. Common situations include: ink line deviation, nozzle blockage, ink leakage, etc. Laser marking machines are different. The structure is relatively simple and basically does not require special maintenance personnel. As long as the company does daily inspections, it will be fine.
With the trend of PCB thinning, the range of printing QR codes is getting smaller and smaller. In specific areas, QR codes below 5x5mm are usually required. In some special applications, high-end barcode guns are configured for reading, and laser marking technology can print 1.5x1.5mm or even 0.8x0.8mm QR codes. The unique fine processing of laser marking machines also has its place.