Author Archive: Andrew James

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A Look Inside an HP Toner Cartridge

A Look Inside an HP Toner Cartridge

First of all, what is toner? Toner is a powder used in laser printers and photocopiers to form the text and/or images on the printed paper. In its early form it was simply carbon powder. In newer toner, the carbon was blended with a polymer to improve the quality of the printout. How does it work? The toner particles are melted by the heat of the fuser, causing them to bond to the paper. The specific polymer used varies by manufacturer, but can be either 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