Clear pattern, fast reading, application of RFH nanosecond laser in QR code marking

With the characteristics and advantages of high-density coding, large information capacity, high decoding reliability, low cost, adjustable size and encryption, QR codes have been applied to all aspects of life, work and other scenarios.

Therefore, many manufacturers use silk screen printing or self-adhesive stickers to mark products with QR codes to achieve product production control and product traceability.

uv laser | green laser | Ultraviolet lasers | uv dpss laser | nanosecond laser | UV laser source | Solid State Lasers

However, the disadvantages of these traditional marking methods are obvious. The first is poor wear resistance or easy to fall off; the second is that the use of ink will also bring pollution of organic waste gas, which will have a certain impact on the human body, working environment and air; third It is difficult to realize the miniaturized mark, and the aesthetics is insufficient.

The emergence of laser marking technology has brought a new selection of processes and an all-round improvement in marking quality for the QR code marking of products. The industrial-grade nanosecond solid-state laser produced by RFH and the output 355nm ultraviolet laser are suitable for materials. Wide range, with fine spot, high precision, small thermal influence and so on.

The first is the small heat affected zone. The 355nm ultraviolet laser output by this laser is a cold light source, which has little thermal impact during marking and has little impact on the outside of the PCB marking area;

The second is high precision. It has a pulse width of less than 20ns and higher peak power, excellent beam quality, M2<1.2, the focused spot is micron, the marked QR code effect is more delicate, and the overall fineness is very high, even complex graphics Or a smaller image symbol will do the trick with ease.

The second is high efficiency. It only takes a few seconds or tens of seconds to get the ideal QR code marking, and it takes only a few seconds or tens of seconds to mark the process parameters. By integrating the marking on the assembly line, it can further save more labor costs for manufacturers.

In addition, the laser-marked mark is non-direct contact processing, which can better protect the manufacturer's products from damage by external forces, and the two-dimensional code marked with laser is not easy to wear, tamper, and compared with silk screen printing, it is not easy to fall off during processing. The characteristic of not producing harmful gases is also more environmentally friendly.