How does the latent image become a true print image?
To black and white laser printer works, for example, when the computer through the cable to the printer to send data, the printer will first receive the data temporarily stored in the cache, when receiving a complete data and then sent to the printer's processor, The data is processed into a signal group of similar data tables that can drive the print engine action. For laser printers, these signal sets are a set of pulsed signals that drive the laser head to work.
Well, the laser printer began to work, in fact, its core technology is the electronic imaging technology, this technology combines the principles of imaging and electronics to generate images, one of the core components is a photosensitive drum. The laser light emitted by the laser emitter is irradiated on a prismatic mirror. As the mirror rotates, the light sweeps from one end of the drum to the other (through a variety of focusing lenses, so that the light that scans the surface of the drum Point is very small), the drum to 1/300 inch or 1/600 inch step rotation, scanning and in the next line of his line. In fact, the cartridge is a surface coated with organic materials, the cylinder, in advance with a charge, when there is light to the radiation, the site will be the resistance of the reaction. The data sent by the computer to control the laser launch, scanning the drum surface of the light constantly changing, so that there will be some places by the radiation, the resistance becomes smaller, the charge disappears, and some places have not been exposed to light, Charge, and ultimately, the surface of the drum to form a charge by the composition of the latent image.

How does the latent image become a true print image? Toner is a very critical role, the toner is essentially a charge of fine plastic particles, the charge and the drum on the surface of the opposite polarity of the charge, when the charge with the drum surface through the ink roller, the charge parts on the adsorption of toner particles, latent image becomes a real image. While the drum is rotating, another set of transmission systems feeds the printing paper with the same polarity but much stronger charge as the drum surface, and the paper passes through the toner cartridge with brother tn 660
on the drum surface is attracted To the top of the paper, the image is formed on the surface of the paper. At this point, the tn420
and the printer are only bound by the attraction of the charge, and the plastic toner is melted and heated to the surface of the paper during the cooling process before the printing paper is fed out of the printer.

After the toner is attached to the paper, the drum surface continues to rotate, passes through a cleaner, and removes the remaining toner in order to enter the next printing cycle. Visible, in this process the drum occupies a very important position.
In fact, the cartridge is the most critical component of the laser printer. Because it not only determines the quality of print quality, but also determines the printing costs. This is because in the laser printer, more than 70% of the imaging components are concentrated in the cartridge, the print quality is actually a good or bad in fact determined by the cartridge. And the cartridge is part of the printer consumables, the use of a certain period of time and to achieve a certain number of sheets need to be replaced.