The drum is the cylindrical metal roller
Thursday, 29 July 2010
The drum is the cylindrical metal roller that applies the ink to the paper. Sometimes printers are designed for cartridges and drums to be separately replaceable; other printers are designed for cartridge-and-drum units bought as one. While the laser toner will last only a few thousand pages in most home printers, drums will last tens of thousands of pages. If you have to replace the drum every time you replace the cartridge, your printing costs will increase significantly. Therefore, if you don?t yet have a printer, get one with separate slots for a laser toner cartridge and drum.
If your laser toner ever gets low, a warning light will appear on the front panel of your printer.
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