Technology
How photocopiers use static electricity to print
HERE’S THE INTERESTING PART
The peak of office productivity relies on the exact same science that makes balloons stick to your hair. Inside a photocopier, a photosensitive drum is positively charged, and the dark text of your original document creates shadows that hold the charge. Negatively charged toner powder is then magnetically attracted to those shadows before being literally melted onto the paper.
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