This is the component responsible for applying ink onto the printing surface. It can be thermal, piezoelectric, or laser-based, depending on the type of printer.These hold the ink or toner that is used for printing. Depending on the type of printer, you may have separate cartridges for different colors (cyan, magenta, yellow, and black) or a single cartridge with all colors. Rollers help feed the printing material (paper or other substrates) through the printer. They ensure a smooth and consistent movement, preventing paper jams and ensuring precise printing.This is the surface where the printing material is placed. It ensures that the material stays in place and receives an accurate print.In laser printers, the fuser unit is responsible for melting the toner particles onto the paper. It consists of heated rollers that fuse the toner to the paper.