some part of the corona parts become dirty or clogged

 It is to make the part and component can be better used to assemble the whole laser pointer .
Accurate accounting of the cost of power generation and heating and boiler economic operation, reliable grasp of the year, the amount of coal-fired to ensure that the index of the next annual coal purchase accounting. Meet the "Eleventh Five-Year" period, the state energy measurement statistical requirements, timely and accurate energy consumption reported to the Corporation to provide accurate data to support for energy conservation. Absorbed laser printer output to erect white striped long mirror mounted at the top of the drum, if dirt, laser encountered a mirror on the dirt can not reach the drum, resulting in the formation of a print paper narrow white stripes. Secondary corona wire-bound in the bottom of the print paper path, it will attract dust and scraps of paper, some part of the corona parts become dirty or clogged.
The formation of cracks in the second and third regions. Cracks sweet bottom. Experimental results is the fourth regional fracture area, and thermal cracking. When the laser is used in the surface of the substrate by laser evaporation data and generate a shallow groove. The bottom of the adjacent material to melt, but does not evaporate. After the passage of laser rapid solidification and subsequent solid - state cooling occurred. Which the growth of columnar grains in the direction parallel to the temperature gradient. Operating methods of the past, the crack in the case of CO2 laser divergence. The wavelength of the carbon dioxide laseris longerandits focus of a larger size, the laser energy can not CON - straight crack in narrow row centrate generated.
This part of the additional heat can increase the cutting speed of 1/3 to 1/2. To ensure that the premise of auxiliary gas, the size of the gas pressure is a very important factor. When high-speed cutting of thin materials, require a higher gas pressure to prevent the cutting edge of incision on the back of the sticky residue (hot slag sticking to the workpiece, but also damage). When the slow increase in material thickness or cutting gas pressure should be appropriately reduced in order to prevent plastic trimming cream, but also to lower gas pressure, cutting as well. Laser cutting practice shows that when the auxiliary gas for the O2, its purity had a significant effect on cutting quality. O2 purity decreased 2% to 50% reduction in cutting speed and incision quality and lead to significant variation. The laser module is one of parts of laser pointer . The workshop should do some test and experiment of laser pointer