We all know and love the benefits of LED lights. Here is how a LED printer works for yet another reason to make the eco-friendly switch!
INKman is a leader in the printer, scanner and fax machine industry. By keeping ahead of the curb we are able to keep customers informed about new innovations in the industry. Read on for more information.
Light emitting diode printers are usually classed with laser printers because they use a similar method of creating pages. Like a laser printer, they use a drum, toner and a fuser, and provide crisp and attractive output. Unlike a laser printer, they use an array of LEDs instead of a laser and mirrors. Manufacturers such as Okidata, Panasonic and Xerox, among others, make small business printers using LED technology.
LED printers start by creating a line-by-line image of the page that they will be printing. A 600 dot-per-inch LED printer designed to print on 8.5-inch-wide letter-sized paper has a row of 4,800 tiny LEDs, corresponding to an 8-inch print area. The LEDs are aimed through a focusing lens at a drum and, as the drum rotates, they quickly blink a successive images of each line that makes up the page. On an 11-inch piece of letter-sized paper with a 10.5-inch printable area, they generate all 6,300 lines in just a few seconds.
The drum in LED printers is similar to the drum in laser printers. It is coated with a photosensitive chemical and receives a charge of static electricity. The areas of the drum that get struck with light get negatively charged. The intermittently charged drum then passes through positively charged toner which sticks to the negatively charged areas of the drum. The drum continues rotating until it touches the more strongly negatively charged paper, causing the toner to jump off of it and onto the paper.
At this point, the only thing holding the toner on the paper is a charge of static electricity. To make the toner stay on the paper, it passes through an assembly called a fuser, which consists of heated rollers that melt the toner onto the paper and eject the printed page into the output tray.
LED printing’s benefits stem from the fact that LED print heads do not have moving parts. This allows them to be smaller than the print heads in laser printers, as well as quieter because they do not have a rotating mirror assembly. Their lack of moving parts also makes them potentially more reliable than the intricate assemblies in laser printers.
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