Most printers, copiers and fax machines use toner cartridges. Toners are electrically charged inks used in laser printers and copy machines to form images and text on printed paper. Older machines used toner, which was poured from bottles into reservoirs in the machines. Laser toners are dry powdery substances charged electrically to attract printer drums. When they are attracted to printer drums they are transferred to the printing papers where the fuser mechanism melts the toners making permanent images. Laser printer toner is one of the best toners used in printing and making copies.
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[Source: Computers and Technology: Hardware Articles from EzineArticles.com - Posted by FreeAutoBlogger]
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