Tuesday, May 1, 2012

The warehouse of green laser pointer is vented

Drum to remove residual charge after the cleaning of residual powder and light to enter the next round of circulation. Laser printers using the composite hot-pressing method, fixing components to complete the fixing. The toner image fixing process is as follows: when the toner image printing paper, the paper guides into the fixing device of heating roller and pressure rubber roller heating roller heating lamp heating (185 ° C ), due to the pressure of the pressure rubber roller, the toner melting immersed in the paper. Heating roller surface coated with a Teflon coating, easy to stick the toner. Some models of the pressure roller surface with a layer of PTFE membrane, it is a good two-sided printing on the back of toner adhesion is not.  green laser pointer  is even much more expensive than the red laser pointer.
Heating fixing the paper separated by the separation claws and the heating roller row of paper round export, to complete the fixing of the whole process. Heating roller into seamless aluminum alloy control the wall thickness of between 1 ~ 3mm, coated with Teflon. Melting the toner in order to prevent the fixing stick to the roller. Teflon coating of the heating roller surface there will be a slight softening phenomenon at high temperatures, when the paper is stuck in the fixing device, must not use a sharp hard object (such as a screwdriver, forceps) forcibly pry out, so will damage the surface coating of the heating roller, the full impact of fixing toner image. Many laser printers using the more advanced ceramic heater (PCT), it warms up fast, energy saving, such as HP 4L. The technology adopted by green laser pointer  has the higher requirement for the material.
4P, 5L, 6L, 6P, 2100,4000,5000 and Canon 460,660,800 and JX and other models are used to ceramic heaters fixing. Some laser printers use the heat lamp halogen lamps, power is generally for the 350 ~ 750W in the middle of a heated roller, not with the heating roller rotation when the printer is powered heating lights bright, the fixing roller carry out pre-heating of about 1 to 2 minutes after the heat roller temperature reaches 185 degrees, when the heating roller surface temperature of the fixing temperature, the thermistor temperature by leaning against the heating roller surface inspection to inform the main logic circuit to stop heating, ready to light is lit, the printer can start printing. When the heating lamp is damaged, the machine does not work, models of the display panel will show the error indication or an error code 50 the Error. Different products of green laser pointer  all have higher standard for the industrial level.
Pressure rubber roller, also known as roll, its role is completed with the heating roller fuser and transfer printing paper toner pressing. Control the size of the pressure from both ends of the stent spring pressure roller is generally made by the high-temperature silicone rubber, pressure rubber roller cellular heat sponge production in some laser printers, the outer surface layer of PTFE membrane, so that more conducive to the print paper and pressure rubber roller separation to prevent paper jams. The temperature controller (thermistor). Most of the methods of temperature control of laser printers, thermal sensing contact with the heating roller with a small thermistor, sensing the heating roller temperature (165 ~ 200 ° C). By the logic circuit to control the heating lamp on and off, to achieve constant laser printer fuser temperature. The toy level of   green laser pointer has the relatively lower requirements.

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