Laser marker of the three work
Laser Marking its working methods can be divided into marking cover model, the array (that is, you said that the dot matrix) marking and marking scanning.
1. Marking cover model
Cover model by the laser marking system, mask and imaging lens, its working principle is a template, will be the subject of play figures, characters, bar code, such as images carved air mask made through a telescope beam expander The laser, even in the prior projection to do a good job of on-board mask, carved from the empty part of the light transmission. Mask-board graphics imaging to work through the lens (focal plane). Each pulse can usually a markers. By laser radiation on the surface of the material was rapidly heated vaporization or chemical reaction occurred in the color change could be formed to identify a clear marker. Marking the general pattern of cover used YAG lasers and CO2 laser. Marking cover model of the major advantages of a laser pulse will be able to play once a complete, including several symbols of the mark, the marking speed. For a large number of products, in a direct line marking. The disadvantage is that the flexibility of poor marking, low energy utilization.
2. Array marking
Array-marking system is the use of several small laser pulse fired at the same time, the mirror and focusing lens, so that the number of laser pulses in the marking material on the surface ablation (melt) out of uniform size and depth of small pits , Each of the characters, these patterns are small round pits and posed, generally 5 horizontal strokes, vertical strokes of 7 points, 5 × 7 to form the array. Array marking the general use of low-power RF CO2 laser, marking its highest speed of up to 6,000 characters / Miao, has become the subject of high-speed online play ideal, the drawback is marked only dot-matrix characters, and can only be achieved 5 × 7 resolution, the Chinese could do nothing.
3. Scan-marking
Scan-marking system is composed of computers, laser scanning and XY bodies of three parts, and its working principle is the need to hit the target information into the computer, the computer program designed in accordance with the prior laser scanning XY and institutions, so that after a special optical system transformation The high-energy laser point in the processing scan movement on the surface to form a tag.
