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How Toner Cartridges Work?

What do printers do? Well, they make paper copies of what's on your screen. But contrary to what you may think, modern LaserJet toner cartridges don't print using ink. So then how do LaserJet toner cartridges work?

Here's everything you need to know about LaserJet printers, toner cartridges, and which ones are the best to buy.

One of the interesting aspects of laser printers and copiers is the toner. 

Rather than the printer applying ink, the paper actually “grabs” the toner.

The toner itself is not ink, but rather an electrically-charged powder made of plastic and pigment.

A LaserJet printer consists of several components. Let's start with the photoreceptor drum assembly, a revolving cylinder made of photoconductive material.

Printers beam a laser beam across the surface of this revolving drum. The drum has a positive charge, but the laser discharges the points it comes in contact with, leaving the resulting image with a negative charge (or vice versa). In this way, the laser draws the document or image you wish to print.The printer then coats the drum not with ink, but with powder. This powder sticks to the electrostatic image the laser has drawn. The powder consists of two ingredients: pigment and plastic. Pigment provides the color, while the plastic is there to adhere the pigment to paper. This mixture, known as toner, is spun in a component called the hopper.

The printer then feeds paper under the drum, first giving the paper a stronger negative charge than that of the electrostatic image. This enables the paper to pull the powder away from the drum.

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