Laser printers use powder toner that is electromagnetically attracted to the page by an image temporarily made on a transfer drum through a laser scanning process, and then fused to the page with a heat-setting system. This toner is supplied in cartridges, usually one for each of a four-colour printing system (cyan, magenta, yellow and black). Manufactures give some estimate of how many pages of a given size each toner cartridge will print, based on a predetermined proportion of coverage (say 10%). As with the speed claims, these estimates are rarely accurate, but can be used to make some judgement between makes and models. The higher resolution of image you are printing, the more toner will be used in the process. Ink jet printers use a liquid ink stored in tanks that are sprayed by very fine nozzles onto the page as they are required. Just as you replace the toner cartridges in the laser system, you replace ink tanks when they're depleted in an ink jet printer.

It is important to understand that even thought the printer might be cheap, consumables is where the manufacturers actually make enormous profits, so be sure to consider replacement consumables when doing your cost comparisons. With ink jet printers, some have colour cartridges in one unit, others have separate colour units. In the long run, separate tanks will most likely work out cheaper, because as one colour runs out, you replace only that colour. When all colours are housed in the one cartridge unit, you may have a nearly full tank of cyan when the yellow is completely gone, and you have to throw away unused ink. Not only does this waste your money, it can also be environmentally expensive.

Cost

There are two parts to your cost assessment of a printer. The first is the purchase price of the printer itself. This can vary considerably between brands and models, and is usually differentiated through different features being offered. Use Myshopping.com.au to search for a printer based on a given price range and compare the features. However, possibly more important is the ongoing cost, often measured in cost per page. A typical ink jet printer may cost you 40-50 cents per printed page, depending on how much ink you are using on the page, it may even cost more. By comparison, a colour laser may work out to 15-20 cents per page. These costs don't usually include the paper stock, and are based on consumables and maintenance costs. Companies like Xerox often supply large colour Laser printers for a cost per page fee.

One cost assessment technique is to estimate how much printing you will do in a given period, load your calculations with a percentage of ink coverage (if you are printing all full gloss and high resolution photographs, for example, you might load the cost per page by a factor of 8-10), factor in the machine cost and make a comparison of what you will spend in a year, including the cost of the printer.

Other things you might consider

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