Final answer:
In laser printers, the toner cartridge is a container that holds toner powder used in the printing process. It is vital for transferring the toner onto paper, which is then fused to create the permanent print.
Step-by-step explanation:
In laser printers, the toner cartridge is a critical component. It serves as a container holding toner powder that is used in the printing process. This toner is a dry black powder that gets a negative electric charge, making it stick to the positively charged areas of a photoconducting drum within the printer. As the paper, which holds a greater positive charge than the drum, passes through, the toner is transferred onto the paper. Then, heated pressure rollers melt and fuse the toner onto the paper fibers, resulting in a permanent print. The toner cartridge is not responsible for adjusting printer resolution, regulating the paper feed, or generating high-voltage charges; it is primarily a container for the toner powder.