The use of mini fiber laser marking machines is very common, especially in the field of craft products, and many customers rely on the laser CNC engraving machine to make the first pot of gold for laser cleaning machine manufacturers and get rich.

　　It is one of the common problems that the marking effect of the mini fiber laser marking machine is not leveled, which is mainly manifested in the obvious bulge phenomenon at the bottom end during cleaning, and the obvious marking effect at the horizontal and vertical junctions during the negative engraving. When carving, there are prominent vertical lines between the characters with and without characters. The heavier the marking, the more obvious the phenomenon.

　　The reasons for the uneven marking effect of the mini fiber laser marking machine are as follows:

　　1. The light output of the laser switching power supply is unstable; 2. The production and processing rate of the mini fiber laser marking machine is too fast, and the response time of the laser tube cannot keep up; 3. The optical path is deviated or the focal length is wrong, resulting in transmitted light and uneven bottom; 4. . The selection of focusing lenses for mini fiber laser marking machine is unscientific, and short focal length spectacle lenses should be selected as much as possible to improve the light quality.

　　The solution for the uneven marking effect of the mini fiber laser marking machine is as follows:

　　1. Detection of replacing the laser switching power supply; 2. Reduce the production and processing rate; 3. Check the optical path of the micro-fiber laser marking machine to ensure that the optical path is appropriate.