Laser toner refills can be expensive. Over the life of the printer, expect to spend many times more on laser toner refill than you paid for the printer itself.

Laser printers have two chief replaceable components: laser toner cartridges and drums. The laser toner is basically the ink for the paper. 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