eli5 why paper from a printer is so hot when it’s pushed out the printer
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I assume you’re talking about a laser printer…
With a laser printer electrostatics are used to attract small plastic particles (toner) to where the printer wants the “ink” to be. Once this occurs the paper is heated to melt the toner onto the paper. The melting process is what makes it hot.
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With a LaserJet printer it needs to go through the fuser to bond the toner to the paper. The heat is what allows the print to stick to the page. Basically the printer sprinkles the toner (ink equivalent for our purposes) on the page and then cooks it into place so it stays.