How do laser printers actually work?

Laser printers, first developed in 1969 by Xerox engineer Gary Starkweather, work through a precise sequence of electrical charges and heat. A laser draws an invisible image onto a charged drum, attracting dry toner powder that transfers onto paper and gets fused by a 200°C roller. The whole process takes fractions of a second, making laser printers fast, reliable, and ideal for high-volume office printing.