Transcription: Software in the computer tells your printer what text or images to print and where to put them on the page. Inside the printer, a special processor powers on a tiny but precise laser light. A spinning mirror sprays the laser beam in a thin line across the print cylinder or drum. This drum is charged with static electricity and is also covered with a light-sensitive material. Everywhere the laser beam hits, it reverses the electric charge of tiny dots embedded on the drum surface. Each dot is just one three hundredths of an inch wide. This charged pattern of dots will soon become a printed page ...
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