Research And Manufacture Of Color-Changing Laser Marker

Laser marking technology is the essential part of laser process, it has many exclusive advantages. Laser marking utilizes the laser of high energy density to partly irradiate to workpieces, which makes surface layer boiled off or color changed, so as to give permanent mark, trademark. This kind of marking is able to mark various words, symbols and figures, etc. The size of character can be from grade"millimeter"to grade"micron", which is significant in fake-proofing for commodities.Color-changing laser marking is one kind of latest high-tech, which is able to mark 6 different colors, making the figures and characters look even nicer.After proving the feasibility in theory, we designed color-changing laser marking system, including optics system, controlling system etc.Laser marker is one integrated system of optic-mechanical-electron, which integrates with optics, precision apparatus, electron and computer technology etc.The INNOVATION of my paper: two focalized beams of light intervened to be one point at surface of object, if the energy of two beams is larger than damaging value of object, it can be impressed an intervened strip on surface, running of the raster makes the orientation of strips changed in system, reasonably arranging each orientation of strips in figure, so as to make recorded figure looks finer under the white light.At present, there is a precise laser marking of single beam of light in market, however, it is only able to mark with one strip, and that's of lower speed, meanwhile, it costs much time to mark documentation. Our raster system divides one beam into two beams, making them intervened, which can get one face by one marking, improving speed a lot obviously, and it can mark even clearer figures.