Toner

Toner is a powder mixture used in laser printers and photocopiers to form the text and images on paper, in general through a toner cartridge. Mostly granulated plastic, early mixtures added only carbon powder and iron oxide; now there are mixtures that contain polypropylene, fumed silica, and various minerals for triboelectrification. Toner using plant-derived plastic also exists as an alternative to petroleum plastic.

Toner particles are melted by the heat of the fuser, and are thus bonded to the paper.

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Source: Wikipedia · Image: Wikimedia Commons · CC BY-SA 3.0

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