Laser marking machine marks characters on PCB board

Circuit board pcb is now almost applied to all electronic products. With the increasing quality requirements of PCB boards, in order to better realize the quality information management and control of products in production, new laser marking The information traceability system for marking characters, barcodes, and two-dimensional codes on the PCB board by the labeling machine came into being.

The traditional screen printing process uses a good graphic screen, and uses external pressure to make the character ink penetrate through part of the mesh of the screen and miss the printing on the surface of the circuit board. . The remaining part of the mesh on the screen will be blocked and will not penetrate the ink. Only a blank will be formed on the surface of the circuit board. The missing ink will form characters, logos, patterns, etc. This processing method is relatively cheap and fast, but it has the disadvantages of rough marking effect, easy marking off, inability to mark small PCB boards, and chemical raw materials that have certain toxicity.

Laser marking uses a high-energy density laser to locally irradiate the PCB board to vaporize or discolor the surface material, thereby leaving a permanent mark. This non-contact processing can mark a very clear two-dimensional code on a very small format, ensuring high precision and high quality, and will not be worn due to high and low temperature, acid-base changes and external friction. No chemical substances are required, and there is no negative effect on personnel safety and the environment.