is a Powder used in Laser Printer s and Photocopier s to form the text and images on the printed Paper . In its early form it was simply Carbon powder. Then, to improve the quality of the printout the Carbon was blended with a Polymer . Toner particles are melted by the heat of the Fuser , causing them to bind to the paper. The specific polymer used varies by manufacturer but can be a Styrene Acrylate Copolymer or a Polyester Resin . Toner formulations vary from manufacturer to manufacturer and even from machine to machine. Typically formulation, granule size and melt point vary the most.
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