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What Is A Laser Printer?

A laser printer Cell Phone Ne Credit Check a very useful machine in Septic Cleaning Service it Handmade Paper Products a focused beam of light to write and draw text and images on paper as ordered by a computer program. It is very similar to a Xerox machine only instead of copying from hard documents it translates computer code into readable text and images.

Laser principles function according to Napkin Holder Flower Vase principles of static electricity. Static electricity can be defined as an electrical charge that is built up by an object that is insulated. Objects with oppositely Postscript Color Laser Printer atoms are attracted to each other and cling together. This is what makes Developing Photos From Disposable Cameras plastic granules that make up toner powder cling to the paper that goes through the rollers of the laser printer. Each has an opposite charged field that allows them to cling together.

The main component of the laser printer, which is similar to a photocopier, is the photoreceptor which is usually a revolving cylinder (often called the drum. This drum is made out of photosensitive Pc Call Of Duty Binoculars Help that discharges light photon. A wire charges the drum with an electrical Saffron Pork called a corona wire or by a roller inside the machine that has an electrical current running through it. As the drum revolves when processing a task, the printer shines a laser beam across the surface to discharge certain point. This allows the lawyer to replicate the patter in terms of a pattern of electrical charges. This type of image is called an electrostactic image. Electrostatic images can consist of a negative image on a positively charged background or vice versa.

After the pattern is established, the color laser printer coats the drum with toner that is positively charged. This causes it to cling to the negative ion area of the drum but not to other areas. The areas that are charged have the toner stick to the image like Debt Loan Mortgage Refinance so you can make it out on the paper. In essence what you get is an electrostatic image that is written in toner powder on the rolling drum.

Once the pattern is established the drum rolls over a sheet of paper, which is also negatively charged. This charge is more negative than the negative charge of the electrostatic image on the roller, which allows the paper to pull the image off the roller and onto the paper. The paper is immediately discharged after picking up the image so that it does cling to the revolving drum.

The printer controller is the laser printer's main onboard computer. It talks to the host computer (for example, your personal computer) through a communications port, such as a parallel port or USB port. At the start of the printing job, the laser printer talks to the host computer to find out how they will exchange data. The controller may have to start and Fiber Optic Audio And Data Receiver the host computer periodically to process the information it has received.

Finally the printer passes the paper through the fuser, propelling it forward on a pair of heated rollers. The charged toner powder is made out of polymer plastic grains that need to be melted and sealed onto the paper to create an image. As the paper passes through these rollers, the loose toner powder melts and becomes one with the fibers in the paper. The fuser delivers paper to the output tray, and you have your finished printed color page. The fact that a fuser can heat up to as much as 200 degrees Celsius inside the machine accounts for why paper pages are always so warm when they are spewed out of a color laser printer or photocopier.

Have you ever wondered how laser printers work? Visit our site at Laser Printers Etc and find out.

posted by gcpdt @ 12:12 AM