The fuser rollers are heated by internal quartz tube lamps , so the plastic in the toner melts as it passes through. To keep this from happening, the fuser rolls must be coated with Teflon , the same non-stick material that keeps your breakfast from sticking to the bottom of the frying pan. But in the last few years, more and more color laser printers have hit the market. By combining these four colors of toner in varying proportions, you can generate the full spectrum of color. There are several different ways of doing this.
Some models have four toner and developer units on a rotating wheel.
The printer lays down the electrostatic image for one color, and puts that toner unit into position. It then applies this color to the paper and goes through the process again for the next color. Some printers add all four colors to a plate before placing the image on paper. The paper simply moves past the different drum heads, collecting all the colors in a sort of assembly line. Inc. All rights reserved.