Printers and Photocopiers

How do printers and photocopiers work?

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PrinterWe couldn’t live without printers and photocopiers. But how do they work?

The bright light you see moving across the image in a photocopier charges the plain paper with electricity – a bit like when you rub a balloon and it makes your hair stick up. The charge is in the exact pattern of the words or pictures on your original.

Toner – that’s a coloured plastic powder – gets stuck to the charged parts of the paper and then heated rollers melt the powder into place.  That’s why the copies feel warm when they come out.  Have a feel for yourself next time the paper comes out!

Fun Fact: You can now get 3D printers! These were used to make the film Paranorman!

 

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