Color printers come in several varieties, depending on how they deposit ink on to the paper. Inkjet printers and laser printers are more commonly used than solid ink printers. This photo shows an inkjet printer that uses six color ink cartridges.
A close-up photograph of a black, bubblejet ink cartridge shows detail of the microchip. When ink is low, simply remove old cartridges and replace them with new. Or, go green and use refillable ink cartridges.