Toner cartridge

A toner cartridge, also called laser toner, is the consumable component of a laser printer. Toner cartridges contain toner powder, a fine, dry mixture of plastic particles, carbon, and black or other coloring agents that make the actual image on the paper. The toner is transferred to paper via an electrostatically charged drum unit, and fused onto the paper by heated rollers during the printing process.

Low-end to mid-range laser printers typically contain two consumable parts: the toner cartridge itself (which has a typical life of 2,000 pages) and the drum unit (a typical life of 40,000 pages). Some toner cartridges incorporate the drum unit in the design and therefore replacing the toner means replacing the drum unit every single time, although some consider this type unessential and therefore not cost-effective. Toner Cartridges are similar to ink cartridges, which are used in Inkjet printing.

Toner cartridges can be expensive, sometimes exceeding the cost of cheaper laser printers. As a result, some people dispose of the printer when it is out of toner (thereby negating any "green" or "eco friendly" claims made by the manufacturers) and replace the entire machine. Ironically, new machines generally come with toners that are only ⅓ full. Consumers also can opt to buy generic brand laser toners, manufactured by companies other than the printer manufacturer. These toners are widely available at a fraction of the price of the genuine brand replacement. Toner refill kits are also an option, allowing the consumer to simply refill an empty cartridge.

Genuine — also known as "original equipment manufacturer" (OEM) are cartridges sold by the printer manufacturers. Manufacturers offer certain guarantees when you use genuine brand toner in your printer and makes certain threats if you don't. Voiding the equipment warranty is often threatened. This is not illegal, as some suggest, although it would have to be proven that any damage to the equipment was actually caused by the use of poor quality replacements.

Genuine cartridges are generally more expensive than refills, compatibles or re-manufactured toner cartridges.

"Compatible", "generic", or "alternative brand" are cartridges manufactured by third party companies and sold under different brand names. Compatible cartridges may vary slightly in look, design and page yield to their OEM counterparts, sometimes due to patents or design copyrights. Generic cartridges are cheaper, often significantly so, than original manufacturer cartridges. They may be less reliable, depending upon the manufacturer. Some contain more toner than OEM cartridges, printing more pages. Some compatible toner cartridges may be of similar quality to their OEM competitors, but many are not.

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Wikipedia