What is the role of fusing rollers in a printer?

The role of fusing rollers in a printer is to heat up and melt the toner onto the paper. In laser printers, after the printing process has transferred toner to the paper, fusing rollers apply both heat and pressure. The heat causes the plastic particles in the toner to melt and bond with the fibers of the paper, resulting in a permanent image. This process is essential for ensuring that the toner adheres properly and that the print is durable. By melting the toner onto the paper, the fusing rollers play a critical part in producing high-quality printed output that is resistant to smudging and fading.