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Article:
Toner Cartridges - How They Work by: Martin Smith In the past computers and their accompanying printers were huge. Toner reservoirs and toner cartridges were used instead of ink cartridges like the ones in use today. Toner cartridges were difficult and messy to fill. The toner cartridges were an advancement. Some printers ran on print wheels and some used ribbons. Computers are compact and printers now do more than just print on some cases. Cartridges with self-contained reservoirs are used in printers. Refilling some cartridges is possible and it isn't as messy as adding toner was. Two types of printers cartridges now exist. Hewlett-Packard and Epson printers primarily, used the first type the Peizo Electric. An electric current is applied to a small crystal causing it to expand about every five microseconds ('20
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