Thursday, October 17, 2013

The Anatomy of a Laser Printer

Laser printing is a blessing to offices; the technology can print a lot of documents efficiently and quickly without making a lot of noise. Moreover, the efficiency of laser printers means that companies will save both time and manpower. Despite the advantages brought about by laser printers, there are only a few individuals who appreciate the intricate technology involved in the conversion of blank paper into printed documents.

Static electricity rules laser printing. The paper passes through a drum, which is a tube made of highly photo conductive material that is discharged by light photons. The drum, initially charged positive by the charge corona wire, revolves while exposed to a tiny laser beam emitted by the printer that discharges certain points.

These points become the letters and are coated with a positively-charged toner, which is a fine black powder. The powder only attaches itself to the negatively-charged points of the drum. Before the paper rolls over the drum, it is given a negative charge, so the toner sticks to the paper. Finally, it rolls through a pair of heated rollers, called a fuser, so that the loose toner powder melts.

After undergoing this intricate process, your document is finished. Though printing documents with a laser printer is relatively quick and efficient, the process is actually rather complicated.


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