Copying machine after the image exposure, rechargeable (reverse charging), the surface of the CdS photosensitive drum surface potential is formed of the same, different charge density of the latent image copying machine, such a latent image can not be developed with a conventional electrostatic development method of . To put this charge density of the surface potential of the latent image and downs of the electrostatic latent image on the drum surface must be fully exposed. Full exposure is the use of the exposure light on the drum surface to conduct a comprehensive, adequate, uniform illumination, the photosensitive drum photoconductive layer (CdS) resistivity drop to become good conductors of electricity. For light zone due to the secondary charge / charge image exposure had lost all Dongguan copier manufacturers, so the overall exposure of the group does not have any effect, the surface potential of the same; for dark regions, due to the overall exposure of the insulating layer below the light guide layer becomes conductive, the photoconductive layer and the insulating layer at the interface of the excess negative charge through the light guide layer and the conductive substrate portion of the negative charge induced onto the insulating layer surface due to positive charge to attract, maintain equilibrium. Such an insulating layer between the surface of the drum and the conductive substrate to form a potential difference, and ultimately makes the drum surface of the insulating layer "dark areas" of the potential increased rapidly. Minolta copiers Dongguan 450/550 color multifunction color copier lease, Features: This machine is a network laser color copiers, including double-sided color copying, network color printing, color scanning, fax and other functions; most large format copier for A3 supply, the smallest format for B5, 45/55 pages per minute print speed, resolution of 600 × 1200dpi and so on. Xin office equipment, mainly engaged in: rent, sell color, black and white digital copiers, printers, multifunction machines and other office equipment and supplies; professional design and installation of closed-circuit surveillance systems, burglar alarm systems, PBX systems, public address systems, Access Control systems. Dongguan color copier lease | copier | Xin office equipment provided by the Dongguan City 江新鑫 office equipment business. Dongguan City 江新鑫 office equipment (www.gdxxoa.com) strong, credible, in Dongguan, Guangdong copier industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the new office equipment Xin into the brilliant and you work for a better future!