A laser cartridge is a component used in laser printers to produce printed documents. It contains toner, a fine powder that is fused onto paper using heat and pressure. The cartridge also includes a drum, which transfers the toner onto the paper in the desired pattern, creating text and images. These cartridges are designed for specific printer models, ensuring compatibility and optimal performance. When the toner runs low, the cartridge can be replaced, allowing the printer to continue producing high-quality prints. Proper disposal and recycling of used cartridges are important for environmental sustainability.