A laser printer uses a laser to prepare a roller so toner adheres only where the laser shines. The toner transfers to paper and is bonded by heat. section 1.2
Millions of possible dots
At 1,200 dpi, an 8.5-by-11-inch page contains 134,640,000 possible dots, each black or white. Storing every dot would be costly, so documents are normally stored as structured paragraphs, words, letters, typefaces, lines, and curves; the dots appear temporarily during printing. section 1.2
Figure 1.5 Microscope pictures of laser-printed text
Microscope images make toner-based lettering visible at ordinary and high magnification. section 1.2
