A toner cartridge is a consumable component of a laser printer. It contains the toner powder that is used to print text and images on paper. The toner is a fine, dry powder made of plastic particles and pigments that are fused to the paper during the printing process. A toner cartridge typically lasts for several thousand pages before it needs to be replaced. Some toner cartridges are designed to be refilled with toner powder, while others are designed to be disposed of and replaced with a new cartridge. An ink cartridge, on the other hand, is a consumable component of an inkjet printer. It contains the ink that is used to print text and images on paper. Ink cartridges are available in both original equipment manufacturer (OEM) and compatible or remanufactured versions. Both toner and ink cartridges should be stored in a cool, dry place, away from direct sunlight and heat sources, as high temperatures can cause the toner or ink to dry out and clog the print head. When a toner or ink cartridge is running low, the printer will typically display a message indicating that the cartridge needs to be replaced. It is important to replace the cartridge as soon as possible to avoid poor print quality or damage to the printer. In summary, toner cartridges are used in laser printers, while ink cartridges are used in inkjet printers. Both are consumable components that need to be replaced when they run out of toner or ink. They should be stored in a cool and dry place.