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Understand the working principle of laser printers
Filling powder to be successful, first of all to the basic structure of the laser printer and imaging principles have a certain understanding. Works from the imaging point of view, imaging is the first laser printer to print the computer came into pulse signals, and then sent to the laser. At this point a laser printer has completed charging stick Guxin uniform surface charge, offset by Gu Xin laser injection laser image position on the charge, so that we can not see Gu Xin form of static images, the magnetic roller on Toner By electrostatic adsorption to the Gu Xin, on principle, then there will be able to observe with the naked eye to the images in the Gu Xin. Followed by transfer roller to transfer, because transfer roller voltage carried by the voltage higher than Gu Xin, Gu Xin the toner to the paper being pulled on a piece of paper has been formed at this time we have to print illustrations, but toner is floating in the paper, the hand can be gently wiped off, so by snapshot, that is, after heating to enable toner melt pressure infiltration of paper fibers, and finally the entire imaging process also achieved.
Understand the imaging principle of the laser printer, the following to begin preparations for filling powder. Prior to this, I first introduce the following when replacing the toner to “experience” of accessories:
Imaging components introduce Magnetic roller: It is a permanent core of the metal sleeve, fixed in the bunker, the rotation will be adsorbed on carbon powder, and electric and magnetic field through the toner attracted to the latent image on photosensitive drum.
Magnetic roller scraper (also known as small scraper): by the scraping of metal frame and polyurethane composition, which control the magnetic roller surface evenly toner capacity, and to friction charged toner.
Cleaning scraper: When the photosensitive drum after the completion of the first printing, the toner image drum surface, and not 100% transfer to the paper, therefore, to use rubber scraper to clean left behind on a pattern scrape off the residual toner, deposited in the waste bunker. If the cleaning scraper aging, not a net addition to the residual toner, it will make it attached to the following page, irregular black spots and lines.
Drum: from the aluminum surface coverage of multi-drug-free organic light variant, also known as OPC drum. Photosensitive drum very sensitive to high temperature and humidity and fire, and more light environment, while bad touch when cleaning drum, scratch coating will result in permanent damage drumhead. At present the life of the printer cartridge is generally 5000, A3 models are generally around 10 000.
Drum drive gear: one end fixed and the imaging drum, transfer power from the printer, driven rotating
drum, transfer roller while rotating drive.
Consumer electronic drum spring: photosensitive drum surface exposure conduction of charge, by the power consumption by the photosensitive drum axle pin spring (Consumer electrode) on the release.
Drum flange: the o
ther side of the photosensitive drum support plate.
Charge roller: charging roller itself is applied two kinds of AC and DC voltage, so it has a dual function, which is charged to the photosensitive drum surface, but also can eliminate the residual potential after the first imaging. Charge roller damaged or dirty and the operation of the voltage caused by the consumption of the photosensitive drum charging and discharging less, will result in bottom ash or impact on print quality.
About the Author
I am China Manufacturers writer, reports some information about mister fog , holmes air humidifier.
Brian LeVan from Remo at PASIC 2009
