LED printers have been around since the year of 1983, well unlike LED television nowadays that became really popular, people know limited information about these printers that use LED technology. Basically it's more of like a laser printer, but instead of lasers, LED arrays are being used by LED printers to create prints.
The only similarity between these two types is the fact that they're both using toner cartridges. The process of printing that undergoes in an LED printer is somehow similar to a typical laser printer. Toner particles are applied via the rotating drum unit, however the method of creating a charged area into the drum differs between an LED and a laser printer. In a laser printer, it involves laser lights, rotating mirrors and lenses, while on the other hand, LEDs or light emitting diodes serve as the light source which set the image into the drum.
Resolution-wise, a typical laser printer can produce much crisp output compared to the other one. However this setback is reasonable, in order for an LED printer to achieve 600dpi (dots-per-inch) resolution, there should be 600 pieces of LEDs jammed in an inch.
Okidata was the first manufacturing company that ever produced the very first LED printer model. In the year 1981, the company unveiled the OPP6100 a printing machine that uses LED-array as its source of light. After the success of Oki's proof-of-concept which was the OPP6100, around 1983 Okidata released its successor as the first desktop LED printer, the OPP6220 model.
In our today's world, color LED printers are now available but not too popular on part of the customers since they still prefer using the typical laser printers and inkjet printers. Aside from Okidata LED printers, other major manufacturers in the print industry also developed their own versions. One of which is the Brother HL-3170CDW which actually uses Color LED printing technology and the usual brother toner cartridges. Another model from a different brand is the Dell 1250c Color LED printer, well it seems that Dell has a lot of LED printers to offer.
If you want to see more of these LED printers, you can check out CNET's list of LED printers from different brands. You can also see this brief review about Brother HL-3170CDW Digital Color LED Printer.
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