What is Uses light beams and toner to from words and images on Paper?

The process you're describing is known as laser printing. In laser printers, a laser beam is used to create an electrostatic image on a drum, which is then coated with toner, a fine powder. The toner adheres to the charged areas of the drum and is transferred onto paper, where heat is applied to fuse the toner, forming clear and sharp text and images. This method is popular for its speed and high-quality output.